Vacuum Circuit Breakers

Leader in Electrics & Automation
Pro-MEC
Vacuum Circuit Breakers
Electric Equipment

2
Vacuum Circuit Breaker
LG Pro-MEC VCB is user-friendly to give more convenience
and safety by providing high speed interrupting time (3cycles),
adopting the rapid auto-reclosing method, and having
wide range of accessories.
7.2kV Draw-out (F class)
Vacuum Circuit Breaker
Ratings 4
Constructional and operating characteristics 10
Control circuit diagram 11
7.2kV dimension 12
12kV dimension 23
17.5kV dimension 24
24kV dimension 33
Accessories 41
Types and ordering information 46
24kV Draw-out (F class)
Vacuum Interrupter
Features & Ordering information 48
Structure 49
Operating characteristics 50
Ratings and Specifications 51
Dimensions 54

[ Compasion table for VCB (Short circuit test) ]
Wide range of accessories (optional)
� Key Lock
� Padlock of earthing switch
� Button padlock
� Position switch of the earthing switch
� Button cover
� Locking coil of earthing switch
� Position switch (Cell switch)
� Shutter padlock
� Preparatory trip coil (Secondary trip coil)
� MOC (Mechanically operated cell switch)
High reliability of the operating mechanism
- Separate design of the main circuit from the
operating mechanism.
- Adopt the toggle link method.
- Improved the reliability of electric circuit.
- Adopt the rapid auto-reclosing method as a
standard option. (O-0.3sec.-CO-3min.-CO)
High interrupting performance
- Make short of the interrupting time. (3cycles)
- Increase the rated short-circuit withstand
characteristics. (1sec. to 3sec.)
Great operational safety
- Reinforce the insulation in the conduct, by
adopting the molded housing in each phase.
- Built in the device making the contacts open first
when draw in and out.
- Adopt the tulip-shape connection between the
cradle and the VCB.
Compasion table for VCB (Short circuit test)
� Latch checking switch
� TOC (Truck operated cell switch)
� Charge indicator
� Code plate (Miss insertion prevention)
� Position padlock
� Capacitor trip device
� Earthing switch Note 1)
� Rectifier
Note 1) The earthing switch is not available for 17.5kV VCB.
VACUUM CIRCUIT BREAKER
3

Vacuum Circuit Breaker
Ratings
Type LVB-06��-20D LVB-06��-25D
Rated voltage (kV) 7.2 7.2
Rated normal current (A) 630 1250 2000 630 1250 2000
Rated frequency (Hz) 50/60 50/60
Rated short-circuit breaking current (kA) 20 25
Rated short-circuit breaking capacity (MVA) 250 310
Rated short-time withstand current (kA/3sec) 20 25
Rated short-circuit making current (kAp) 52 65
Rated breaking time (Cycle) 3 3
Rated opening time (sec) ≤ 0.04 ≤ 0.04
No-load closing time (sec) ≤ 0.06 ≤ 0.06
Withstand Power frequency (kV/min) 20 20
voltage Impulse (kV/1.2×50㎲) 60 60
Rated operating sequence O-0.3s-CO-3min-CO O-0.3s-CO-3min-CO
Mechanical M2 (10,000 times) M2 (10,000 times)
Type
test
Electrical E2 (List1) E2 (List1)
Capacitive current switching Note 1) C2 C2
Lifetime
Without maintenance (Time)
Mechanical
Maintenance (Time)
Without maintenance (Time)
Electrical
Maintenance (Time)
20000
30000
20000
30000
20000
30000
20000
30000
Auxiliary switch 4a4b, 10a10b 4a4b, 10a10b
Fixed Visible, Fixed Visible, Fixed Visible, Fixed Visible, Fixed
E-type Visible, Clip Visible, Tulip Visible, Clip Visible, Tulip
Installing
method
Draw-out
type
F-type
G-type Note 2)
-
T
Visible, Clip
Visible, Clip
Enclosed, Tulip
Visible, Tulip
Visible, Tulip
Enclosed, Tulip
Visible, Clip
Visible, Clip
Enclosed, Tulip
Visible, Tulip
Visible, Tulip
Enclosed, Tulip
M-type Note 2) Enclosed, Tulip Enclosed, Tulip
E-type (kg) 94 99 134.5 94 99 134.5
VCB F-type (kg) 95 100 135.5 95 100 135.5
Weight G, M-type (kg) 95 (137) 100 (147) 135.5 (163.5) 95(137) 100(147) 135.5(163.5)
Note 3) E-type (kg) 37 39.5 60 37 39.5 60
Cradle F-type (kg) 39 41.5 62.5 39 41.5 62.5
G-type (kg) 39(103) 41.5(107) 62.5(117) 39(103) 41.5(107) 62.5(117)
Applied standard IEC 62271-100 IEC 62271-100
Test laboratory KERI Note 4) � �
Note 1) Applied cable-charging current switching test
2) In the event of ordering Enclosed Tulip type for G class VCB, please add “T”in the end of type name. (Ex: LVB-06G-20D/06-1A2B-T)
3) ( )* indicates the weight of Enclosed Tulip installing method VCB.
4) KERI: Korea Electrotechnology Research Institute.
4
▲ Visible VCB
(Draw-out type)
▲ E-type cradle
(Visible, Clip contact)
▲ E-type cradle
(Visible, Tulip contact)
▲ F -type cradle
(Visible, Clip contact)
▲ G-type cradle
(Visible, Tulip contact)

Type LVB-06��-32D LVB-06��-40D
Rated voltage (kV) 7.2 7.2
Rated normal current (A) 1250 2000 3150 1250 2000 3150
Rated frequency (Hz) 50/60 50/60
Rated short-circuit breaking current (kA) 31.5 40
Rated short-circuit breaking capacity (MVA) 390 500
Rated short-time withstand current (kA/3sec) 31.5 40
Rated short-circuit making current (kAp) 82 104
Rated breaking time (Cycle) 3 3
Rated opening time (sec) ≤ 0.04 ≤ 0.04
No-load closing time (sec) ≤ 0.06 ≤ 0.06
Withstand Power frequency (kV/min) 20 20
voltage Impulse (kV/1.2×50㎲) 60 60
Rated operating sequence O-0.3s-CO-3min-CO O-0.3s-CO-3min-CO
Mechanical M2 (10,000 times) M2 (10,000 times)
Type
test
Electrical E2 (List1) E2 (List1)
Capacitive current switching Note 1) C2 C2
Lifetime
Without maintenance (Time)
Mechanical
Maintenance (Time)
Without maintenance (Time)
Electrical
Maintenance (Time)
20000
30000
20000
30000
20000
30000
20000
30000
Auxiliary switch 4a4b, 10a10b 4a4b, 10a10b
Fixed Visible, Fixed Visible, Fixed Visible, Fixed Visible, Fixed
E-type Visible, Tulip Visible, Clip Visible, Tulip Visible, Tulip
Installing
method
Draw-out
type
F-type
G-type Note 2)
-
T
Visible, Tulip
Visible, Tulip
Enclosed, Tulip
Visible, Tulip
Visible, Tulip
-
Visible, Tulip
Visible, Tulip
Enclosed, Tulip
Visible, Tulip
Visible, Tulip
-
M-type Enclosed, Tulip - Enclosed, Tulip -
E-type (kg) 131.5 134.5 210 135 138 210
VCB F-type (kg) 132.5 135.5 211 136 139 211
Weight G, M-type (kg) 132.5(159) 135.5(160) 220 136(162.5) 139(163.5) 220
Note 3) E-type (kg) 52 60 131 52 60 131
Cradle F-type (kg) 54.5 62.5 135 54.5 62.5 135
G-type (kg) 62.5(110) 135(117) 155 62.5(110) 135(117) 155
Applied standard IEC 62271-100 IEC 62271-100
Test laboratory KERI Note 4) � �
Note 1) Applied cable-charging current switching test
2) In the event of ordering Enclosed Tulip type for G class VCB, please add “T”in the end of type name. (Ex: LVB-06G-20D/06-1A2B-T)
3) ( )* indicates the weight of Enclosed Tulip installing method VCB.
4) KERI: Korea Electrotechnology Research Institute
▲ Enclosed VCB
(Draw-out type, G-type)
▲ G-type Cradle
(Enclosed, Tulip contact)
▲ Visible, Clip contact ▲ Visible, Tulip contact ▲ Enclosed, Tulip contact
5

Vacuum Circuit Breaker
Ratings
Type LVB-12��-25D/06, 12, 20-T LVB-12��-32D/12, 20-T
Rated voltage (kV) 12 12
Rated normal current (A) 630 1250 2000 1250 2000
Rated frequency (Hz) 50(E1,C2: KEMA), 60(E2: PT & T) 60(E1,E2,C2: PT & T)
Rated short-circuit breaking current (kA) 25 31.5
Rated short-circuit breaking capacity (MVA) 500 650
Rated short-time withstand current (kA/sec) 25/3 31.5/3
Rated short-circuit making current (kAp) 62.5 81.9
Rated breaking time (Cycle) 3
Rated opening time (sec) 0.04
No-load closing time (sec) 0.06
Withstand Power frequency (kV/min) 28
voltage Impulse (kV/1.2×50㎲) 75
Rated operating sequence O-0.3s-CO-3min-CO
Type
test
Mechanical
Electrical
M2 (10,000 times)
E2 (List 1)
Capacitive current switching Note 1) C2
Lifetime
Without maintenance (Time)
Mechanical
Maintenance (Time)
Without maintenance (Time)
Electrical
Maintenance (Time)
20,000
30,000
20,000
30,000
Auxiliary switch 4a4b, 10a10b
Fixed -
E-TYPE -
Installing
Method Draw-out
type
F-TYPE
G-TYPE
-
Enclosed, Tulip
M-TYPE Enclosed, Tulip
E-TYPE (kg) -
VCB F-TYPE (kg) -
Weight
G, M-TYPE
E-TYPE
(kg)
(kg)
137
-
147
-
163.5
-
159
-
160
-
Cradle F-TYPE (kg) - - - - -
G, M-TYPE (kg) 103 107 117 110 117
Applied standard IEC 62271-100
Test laboratory KEMA: E1, C2 PT & T: E2 Note 2) PT & T: E1, E2, C2, M2
Note 1) Applied cable-charging current switching test
2) PT&T: Power Testing & Technology Institute (LGIS high-power laboratory)
6

Type LVB-17��-25D/06, 12, 20, 25
Rated voltage (kV) 17.5
Rated normal current (A) 630 1250 2000 2500
Rated frequency (Hz) 50/60
Rated short-circuit breaking current (kA) 25
Rated short-circuit breaking capacity (MVA) 750
Rated short-time withstand current (kA/sec) 25/3sec
Rated short-circuit making current (kAp) 65
Rated breaking time (Cycle) 3
Rated opening time (sec) ≤0.04
No-load closing time (sec) ≤0.06
Withstand Power frequency (kV/min) 38
voltage Impulse (kV/1.2×50㎲) 95
Rated operating sequence O-0.3s-CO-3min-CO
Mechanical M2 (10,000 times)
Type
test
Electrical E2 (List1)
Capacitive current switching Note 1) C2
Lifetime
Without maintenance (Time)
Mechanical
Maintenance (Time)
Without maintenance (Time)
Electrical
Maintenance (Time)
20000
30000
20000
30000
Auxiliary switch 4a4b,10a10b
Fixed Visible, Fixed
Installing E-TYPE Visible, Tulip
method
Draw-out
type
F-TYPE Visible, Tulip
G-TYPE Visible, Tulip
Fixed type VCB (kg) 115 125 135 165
E-TYPE (kg) 130 140 155 195
VCB F-TYPE (kg) 130 140 155 195
Weight
G-TYPE
E-TYPE
(kg)
(kg)
160
65
170
67
190
78
220
165
Cradle F-TYPE (kg) 75 77 88 172
G-TYPE (kg) 100 105 115 185
Applied standard IEC 62271-100
Test laboratory KEMA , PT&T �
Note 1) Applied cable-charging current switching test.
7

Vacuum Circuit Breaker
Ratings
Type LVB-20��-13D LVB-20��-13D/T LVB-20��-16D LVB-20��-16D/T LVB-20��-25D LVB-20��-25D/T
Rated voltage (kV) 24 24 24
Rated normal current (A) 630 630 630
1250 1250 1250
2000
Rated frequency (Hz) 50/60 50/60 50/60
Rated short-circuit breaking current (kA) 12.5 16 25
Rated short-circuit breaking capacity (MVA) 520 665 1000
Rated short-time withstand current (kA/3sec) 12.5 16 25
Rated short-circuit making current (kAp) 32.5 40 65
Rated breaking time (Cycle) 3 3 3
Rated opening time (sec) ≤ 0.04 ≤ 0.04 ≤ 0.04
No-load closing time (sec) ≤ 0.06 ≤ 0.06 ≤ 0.06
Withstand Power frequency (kV/min) 50 50 50
voltage Impulse (kV/1.2×50㎲) 125 125 125
Rated operating sequence O-0.3s-CO-3min-CO O-0.3s-CO-3min-CO O-0.3s-CO-3min-CO
Type
test
Mechanical
Electrical
Capacitive current switching Note 1)
M2(10,000 times)
E2 (List1)
C2
M2(10,000 times)
E2 (List1)
C2
M2(10,000 times)
E2 (List1)
C2
Lifetime
Without maintenance (Time)
Mechanical
Maintenance (Time)
Without maintenance (Time)
Electrical
Maintenance (Time)
20000
30000
20000
30000
20000
30000
20000
30000
20000
30000
20000
30000
Auxiliary switch 4a4b, 10a10b 4a4b, 10a10b 4a4b, 10a10b
Fixed Visible, Fixed - Visible, Fixed - Visible, Fixed -
Installing
Draw-out
E-type
F-type
Visible, Clip
Visible, Clip
Enclosed, Tulip
Enclosed, Tulip
Visible, Clip
Visible, Clip
Enclosed, Tulip
Enclosed, Tulip
Visible, Clip
Visible, Clip
Enclosed, Tulip
Enclosed, Tulip
8
method
type G-type Note 2) Visible, Tulip Enclosed, Tulip Visible, Tulip Enclosed, Tulip Visible, Tulip Enclosed, Tulip
M-type - Enclosed, Tulip - Enclosed, Tulip - Enclosed, Tulip
E-type (kg) 145 145 145 145 145 145
VCB F-type (kg) 145 145 145 145 145 145
Weight
G, M-type
E-type
(kg)
(kg)
155
80
187
80
155
80
187
80
155
80
187/218 (2000A)
80
Cradle F-type (kg) 82 82 82 82 82 82
G-type (kg) 110 120 110 120 110 120
Applied standard IEC 62271-100 IEC 62271-100 IEC 62271-100
Test laboratory
KERI � - �
KEMA - � �
Note 1) Applied cable-charging breaking current
2) In the event of ordering Enclosed Tulip type for G class VCB, please add “T”in the end of type name. (Ex: LVB-06G-20D/06-1A2B-T)
▲ Fixed type VCB ▲ E-type cradle ▲ F-type cradle ▲ G-type cradle
▲ G-type cradle
(Withdrawable by lever) (Withdrawable by screw)

Motor
When the closing spring is charged, the control power of motor is turned off by the built-in limit s/w.
Closing Coil (C)
The coil operated only when the power is applied continuously
over 45ms. It has built-in electrically anti-pumping circuit.
Note 1)Range of the normal operating voltage: 85~110%
2) DC 24V is the underdeveloped rating.
Auxiliary switch
Standard 4a4b / Optional 10a10b
Charge indicator of
the closing spring
Indicating the condition of the closing spring.
Charged Discharged
Counter
Rated voltage
Note 1) Range of the normal operating voltage: 85~110%
2) DC 24V is the underdeveloped rating.
The peak value of the Consumption Charging time
Rated current (A)
inrush current (A)
power (W) (Sec.)
DC 24V 30 15 350 12
DC 110V 20 5 330 12
Rated voltage Rated current (A)
DC 24V 10
DC 110V 2.5
Classification
AC
250V
125V
10
10
5
5
Contact Ratings 250V 10 5
DC 125V 10 5
30V 10 5
Shunt coil (TC)
General Inductive Contact
load (A) load (A) configuration
Note) The contact capacity of the following accessories are the same with that of the Aux. switch. Position switch, Closing spring
contact, Charging complete indicating contact, Position switch of the earthing switch, Mechanically operated cell switch,
Truck operated cell switch.
When the VCB is 'ON' position, even though the control power
of a shunt coil is 'OFF', the VCB maintains the 'ON' position.
Note 1)Range of the normal operating voltage: 70~110%
2) DC 24V is the underdeveloped rating.
Mechanically counts the switching of the VCB by 5digits analog type counter (Standard option)
4a4b
10a10b
Rated voltage Rated current (A)
DC 24V 10
DC 110V 2.5
��Position of the Aux.contact switch
VCB
ON
OFF
“a” contact
ON
OFF
Position indicator of the
main contacts
Indicating the 'Close' or the 'Open' of the main contacts.
Close position: ��ON�� Open position: ��OFF��
Close position Open position
“b” contact
OFF
ON
9

Vacuum Circuit Breaker
Constructional and operating characteristics
10
①
②
③
④
⑥
⑦
⑩
Manual charge
Insert the charge handle into the manual charge hole in the front of a
VCB, and rotate it to clockwise over 40times and the charge
complete with a metal sound.
Motor charge
⑧
If you apply the control power to a VCB, the closing spring will be
charged automatically by a motor and then the control power will be
turned off by the built-in limit s/w. Please use the same control
voltage for motor, Closing coil, Trip coil.
Sequence of the switching mechanism
⑤
⑪
⑨
① Charge Indicator
of the closing spring
② Close button
③ Key lock (Optional)
④ Trip button
⑤ Manual charge hole
⑥ Position indicator
of the main contacts
⑦ Counter
⑧ Screw hole for draw-in
and draw-out
⑨ Nameplate
⑩ Mounting hole
⑪ Safety cover

Control circuit diagram
52b: Auxiliary switch (NC)
LS1: Closing interlock limit switch (only withdrawable type)
LS2: Motor stopping, closing spring charged indication
LS3: Anti-closing, anti-pumping limit switch
LCS1: Opening latch checking switch(preventing closing
unless the trip latch is properly reset)
LS4, LS5: Position s/w (close in test position)
LS6, LS7: Position s/w (close in run position)
∅: External terminal of VCB
52: Vacuum circuit breaker
M: Spring charging motor
TC: Trip coil
TC1: Secondary Trip coil
C: Closing coil
Y: Anti-pump relay
52a: Auxiliary switch (NO)
Note 1) LCS1: Latch checking switch
2) Trip coil supervision (Trip coil monitoring contact)
Optional accessories
3) Position switch: 4a (Terminal No.: 1, 2, 3, 4, 5, 6, 7, 8)
4) TC1: Secondary trip coil (Preparatory trip coil Terminal No.: 82,83)
5) In fixed type VCB, LS1 (Closing-coil limit switch) is not available.
※ Above circuit diagram is based on ‘OFF’ status of VCB. and closing spring is charged.
11

Vacuum Circuit Breaker
7.2kV dimension (VCB)
LVB-06P-20D, 25D, 32D, 40D (Visible, Fixed) - (630/1250/2000A)
��Top
LVB-06P-32D, 40D (Visible, Fixed) - (3150A)
12
*125.5 applied to all 7.2kV VCB.
��Front
��Front
31.5/40kA 3150A
��Side
��Side
Rated 630A 1250A
A 6 10
��Top
(Unit: mm)

LVB-06E, F, G-20D, 25D, 32D, 40D E, F, G class - (630/1250/2000A)
��Top
��Front
��Side
Rated 630A 1250A
A 6 10
LVB-06G-20D/T, 25D/T, 32D/T, 40D/T G class (Enclosed, Tulip contact) - (630/1250/2000A)
��Front
��Side
(Unit: mm)
13

Vacuum Circuit Breaker
7.2kV dimension (VCB)
LVB-06E-32D, 40D E class (Visible, Tulip contact) - (3150A)
��Front
14
��Side
LVB-06F-32D, 40D F class (Visible, Tulip contact) - (3150A)
��Front
��Side
��Top
��Top
(Unit: mm)

LVB-06G-32D, 40D G class (Visible, Tulip contact) - (3150A)
��Front
��Top
��Side
(Unit: mm)
15

Vacuum Circuit Breaker
7.2kV dimension (Cradle)
LCL-06E-20D, 25D E class (Visible, Clip contact) - (630/1250A)
��Front
16
Rated 630A 1250A
A 6 10
B 55 60
C 95 90
��Side
��Top
(Mounting hole)
20/25kA 630/1250A E class
(Unit: mm)
(Earthing hole)

LCL-06E-20D, 25D, 32D, 40D E class (Visible, Tulip contact)
��Front
��Top
(Mounting hole)
LCL-06E-32D, 40D E class (Visible, Tulip contact) - (3150A)
��Front
ST: 175
��Side
Rated 1250A 2000A
A 10 20
class
class
(Earthing hole)
��Side ��Top
class
(Mounting hole)
ST: 175
(Unit: mm)
(Earthing hole)
17

Vacuum Circuit Breaker
7.2kV dimension (Cradle)
LCL-06F-20D, 25D F class (Visible, Clip contact) - (630/1250A)
��Front
18
Rated 630A 1250A
A 6 10
B 55 60
C 95 90
(Mounting hole)
ST: 175
��Top
class
(Mounting hole)
(Earthing hole)
class
��Side
LCL-06F-20D, 25D F class (Visible, Tulip contact) - (2000A)
��Front
��Top
��Side
class
Insulation barrier
(Earthing hole)
(Unit: mm)

LCL-06F-32D, 40D F class (Visible, Tulip contact) - (1250/2000A)
��Front
��Top
(Mounting hole)
(Earthing hole)
class
(Mounting hole)
class
LCL-06F-32D, 40D F class (Visible, Tulip contact) - (3150A)
��Front
��Top
��Side
��Side
Rated 1250A 2000A
A 10 20
ST: 175
class
(Earthing hole)
(Unit: mm)
class
19

Vacuum Circuit Breaker
7.2kV dimension (Cradle)
LCL-06G-20D, 25D, 32D, 40D G class (Visible, Clip contact) - (630/1250/2000A)
��Front
20
��Top
��Side
Rated 630A 1250A 2000A
A 6 10 20
(Mounting hole)
class
ST: 175
(Earthing hole)
class class
class class
(Unit: mm)

LCL-06G-20D/T, 25D/T, 32D/T, 40D/T G class (Enclosed, Tulip contact) - (630/1250/2000A)
��Front
��Top
��Side
(Earthing hole)
class
ST: 225
(Unit: mm)
ST: 225
class
class
Rated
630A
20/25kA
1250A 2000A
31.5/40kA
1250A 2000A
A 6 12 25 12 25
B ∅29 ∅48 ∅48
21

Vacuum Circuit Breaker
7.2kV dimension (Cradle)
LCL-06G-32D, 40D G class (Visible, Tulip contact) - (3150A)
��Side
��Top
22
(Mounting hole)
(Earthing hole)
class
(Unit: mm)

12kV dimension (VCB & Cradle)
LVB-12G-25D/T, 32D/T G class - (630/1250/2000A)
��Front
130
320.1
470
150 150
115.5
103
522
549
S
1235
55.2 191
706.7
88 528.2
288
388.5
(668)
330 330
345 295
25kA 630/1250A G class 31.5kA 1250/2000A G class
25kA 2000A G class
LCL-12G-25D/T, 32D/T G class - (630/1250/2000A)
��Front
��Top
ST: 225
S
600 (12) 100 660
731.5
(946)
Section S-S
156
560
660
100
4-∅14
(Mounting hole)
��Side
��Side
25kA 630/1250A G class
A
B
29
285 345
295
Rating
630A
25kA
1250A 2000A
31.5kA
1250A 2000A
A 12 25 12 25
B ∅29 ∅48
A
88 528.2
288
388.5
(668)
ST: 225
345 295
31.5kA 1250/2000A G class
25kA 2000A G class
2-∅13
VIEW "A"
150 150
26
26
83
295
(Unit: mm)
48
23

Vacuum Circuit Breaker
17.5kV dimension (VCB)
LVB-17P-25D Fixed - (630/1250/2000A)
��Front
24
285 130
��Top
4-∅ 13
280.5
22.5
210
115.5
670
750
789
125.5
LVB-17P-25D Fixed - (2500A)
��Front
285 130
254
115.5
770
850
889
254
210
750
670
��Side
2-∅ 14 60
325.5
630/1250A
529
130 40
25kA 630/1250/2000A Fixed type
397.5
579
240
133.5
20
20
25kA 2500A Fixed type
190
155.5
A
A
��Side ��Top
350
318.5
80
4-∅ 14 40
2000A
295
320
40
130
670
850
6-∅14
125.5
120
80
(Unit: mm)
Rating 630A 1250A/2000A
A 6 20
49 300 40 40
4-∅13

LVB-17E, F-25D E, F class - (630/1250/2000A)
��Front
��Top
285 130
210 210
115.5
103
710
210 210
202
125.5
LVB-17E, F-25D E, F class - (2500A)
��Front
285 130
254
115.5
103
811
254
109
750
169.5
325.5
670
��Side
94.5 77
25kA 630/1250/2000A E, F class
287
630/1250A
655.5
484
270
∅29 ∅48
60 80
��Side ��Top
359
397.5
551
722.5
337
25kA 2500A E, F class
360
303.5
2000A
254
295
310
202 125.5
254
(Unit: mm)
25

Vacuum Circuit Breaker
17.5kV dimension (Cradle)
LVB-17G-25D G class - (630/1250/2000A)
��Front
��Top
LVB-17G-25D G class - (2500A)
340 130
26
130
340
254
770
670
210 210
115.5
103 103
719
749
210 210
254
125.5
��Front ��Side
��Top
138
75
302
805
103 103
83.7(Interlock)
810
840
142(MOC)
144
75
263
725
83.7(Interlock)
301
493
345
635
688
142(MOC)
337
��Side
25kA 630/1250/2000A G class
17.5kV 25kA 2500A G class
360
359
290
251
668
721
526
370
∅29 ∅48
630/1250A 2000A
254 254
125.5
295
365
(Unit: mm)

LCL-17E-25D E class - (630/1250/2000A)
��Front
800
210 210
40
20
2-∅14
50
160
50
50 160
��Side
87.2
25kA 630/1250/2000A E class
��Top
725
690
340 340
Rating 630A 1250A 2000A
A 6 10 20
166 ST: 182
270
40
20
2-∅14
860 40
1050
630A 1250A 2000A
60
150
60
60 150
440
340
A
6-∅12
(Mounting hole)
A
80
295
326
∅14
(Earth hole)
40
20
4-∅14
80
130
130 80
80
720
139
(Unit: mm)
27

Vacuum Circuit Breaker
17.5kV dimension (Cradle)
LCL-17E-25D E class - (2500A)
��Front ��Side
28
254
900
254
25kA 2500A E class
��Top
825
790
290
910
166 ST: 202 377
254
530
1039
VIEW "A"
4-∅12
254
35
∅50
129
310 360
6-∅12
(Mounting hole)
360
139
940
∅14
(Earth hole)
VIEW "A"
(Unit: mm)

LCL-17F-25D F class - (630/1250/2000A)
��Front
800
40
725
690
166
ST: 182
860
270 440
20 2-∅14 20 2-∅14
50
50 160 50 160
210
210
25kA 630/1250/2000A F class
��Top
��Side
340 340
Rating 630A 1250A 2000A
A 6 10 20
87.2
40
60
60 150 60 150
210 210
1050
40
A
A
326 295
6-∅12 (Mounting hole)
340
40
20
∅14
(Earth hole)
40
40
720
4-∅14
20 4-∅14
80
80 130 80 130
210
210
139
(Unit: mm)
29

Vacuum Circuit Breaker
17.5kV dimension (Cradle)
LCL-17F-25D F class - (2500A)
��Front ��Side
30
254
900
254
��Top
25kA 2500A F class
876
825
166 ST: 202 377
35
910 129
360
310
139
290 530 6-∅12
(Mounting hole)
254 254
VIEW "A"
4-M12
∅50
360
940
∅14
(Earth hole)
VIEW "A"
(Unit: mm)

LCL-17G-25D G class - (630/1250/2000A)
��Front
800
210
295
445
1050
210 2-∅15
210
295 162 40
��Side
797
25kA 630/1250/2000A G class
Rating 630A 1250A 2000A
A 6 10 20
295 162 40
A
30
192
250
��Top
A
ST: 240
210 2-∅15
210
736
760
210
40
1047
175 (Earth hole)
4-∅15
295 162 40
100 625
(Unit: mm)
A
4-∅14
(Mounting hole)
31

Vacuum Circuit Breaker
17.5kV dimension (Cradle)
LCL-17G-25D G class - (2500A)
��Front
32
1180
��Side
25kA 2500A G class
��Top
∅79
28
774 172
900
860
790
175
55
20
439
ST: 240
100 600
134
254
254
125
70
1024
32
∅14
(Earth hole)
254
254
6-∅14
(Mounting hole)
40
80
162
360
VIEW "A"
(Unit: mm)

24kV dimension (VCB)
LVB-20P-13D, 16D, 25D (Fixed) - (630/1250/2000A)
��Front ��Side
630A 1250A 2000A
∅
(Mounting hole)
LVB-20E, F-13D/(T), 16D/(T), 25D/(T) E, F class - (630/1250/2000A)
��Front ��Side
Note 1) In case of 12.5kA & 16kA 630A, the dimension shown in parenthesis should be applied.
(Unit: mm)
33

Vacuum Circuit Breaker
24kV dimension (Cradle)
LVB-20G-13D, 16D, 25D G class (Visible, Tulip contact) - (630/1250A)
��Front ��Side
LVB-20G-13D/T, 16D/T, 25D/T G class (Enclosed, Tulip contact) - (630/1250/2000A)
��Front ��Side
34
Note 1) ( ): The dimension shown in parenthesis should be applied to LVB-20G-13E/T or LVB-20G-16E/T,
LVB-20G-25E/T for 630A and 1250A in case that distance between phase & phase is 210mm.
(Unit: mm)

24kV dimension (Cradle)
LCL-20E-13D, 16D, 25D E class (Visible, Clip contact) - (630/1250/2000A)
��Front ��Side
��Top
(Mounting hole)
Rated A B T
630, 1250A 768 190.5 10
2000A 778 185.5 20
12.5kA 630A 25kA 630A
Insulation barrier
(Earthing)
12.5kA 1250A
25kA 1250, 2000A
(Unit: mm)
35

Vacuum Circuit Breaker
24kV dimension (Cradle)
LCL-20E-13D/T, 16D/T, 25D/T E class (Enclosed, Tulip contact) - (630/1250/2000A)
��Front ��Side
��Top
36
(Mounting hole)
Rated A B T
630, 1250A 768 190.5 10
2000A 778 185.5 20
ST: 260
630A
Insulation barrier
1250A 2000A
(Earthing)
(Unit: mm)

LCL-20F-13D, 16D, 25D F class (Visible, Clip contact) - (630/1250/2000A)
��Front
��Top
(Mounting hole)
��Side
Rated A B T
630, 1250A 768 190.5 10
2000A 778 185.5 20
12.5kA 630A 25kA 630A 12.5kA 1250A
25kA 1250, 2000A
Insulation barrier
(Earthing)
(Unit: mm)
Insulation barrier
37

Vacuum Circuit Breaker
24kV dimension (Cradle)
LCL-20F-13D/T, 16D/T, 25D/T F class(Enclosed, Tulip contact) - (630/1250/2000A)
��Front ��Side
��Top
38
(Mounting hole)
Rated A B T
630, 1250A 768 190.5 10
2000A 778 185.5 20
630A
Insulation barrier
1250A 2000A
(Earthing)
(Unit: mm)
Insulation barrier

LCL-20G-13D, 16D, 25D G class (Visible, Tulip contact) - (630/1250A)
��Front ��Side
��Top
(Mounting hole)
(Unit: mm)
39

Vacuum Circuit Breaker
24kV dimension (Cradle)
LCL-20G-13D/T, 16D/T, 25D/T G class (Enclosed, Tulip contact) - (630/1250/2000A)
��Front ��Side
��Top
40
Note 1) ( ): The dimension shown in parenthesis should be applied to LVB-20G-13E/T or LVB-20G-16E/T,
LVB-20G-25E/T for 630A and 1250A in case that distance between phase & phase is 210mm.
��Earthing Switch
(Unit: mm)

Accessories
Accessories for VCB
Key lock
When it is locked by a key, the closing operation is not available
(electrically and mechanically) without a Key.
Button padlock
Button padlock protects ‘ ON’ or ‘OFF’ button when accident is occurred
by operation at discretion.
It is available to operate after release button padlock.
Button cover
Button cover protects ‘ON’ of ‘OFF’ button when accident is
occurred by operation at discretion. It is available to operate by push
bar.
Position switch (Cell switch)
Indicating the position (Run or Test) of a VCB, by mechanically
pressing the switch when a VCB change the position.
- RUN: 2a
- TEST: 2a
Note) In case that position of VCB
changed to “Run” or “Test” position,
“a” contact will be closed.
41

Vacuum Circuit Breaker
Accessories
Accessories for VCB
Secondary coil (Preparatory trip coil)
The main coil and the preparatory coil is connected in parallel. So
even though there happens a fault in the trip coil, the VCB can be
tripped by one of the two trip coils.
Latch checking switch
When the Latch is in abnormal position, the Latch checking switch
prevents the closing operation even though there is the 'Closing'
signal.
Charge indicator
Remotely indicates the charging is completed.
(Standard Feature)
- Terminal No.: 9, 10
Position padlock
The hole to prevent the draw-in and out of a VCB from the present
position.('Run' or 'Test')
Standard option in the interlock lever of the E, F class draw-out type
VCB. (Hole size = ∅ 8)
42

Accessories for Cradle
Earthing switch (for G class draw-out type only)
For the safety during the maintenance of a VCB panel, discharge the
charging current in the load side of a VCB with this earthing switch.
Padlock of earthing switch
(for G class draw-out type only)
The hole to prevent the accident through carelessness earthing
switch operation, the locking of the earthing switch is available when
the switch is in 'OFF' position.
(Hole size = ∅8)
Position switch of the earthing switch
(for G class draw-out type only)
Indicates the 'ON' or 'OFF' status of the earthing switch. (5a5b)
Locking coil of earthing switch
(for G class draw-out type only)
To prevent the accident through carelessness earthing switch
operation, the earthing switch can be changed to 'ON' position after
releasing the lock by magnetizing the coils.
43

Vacuum Circuit Breaker
Accessories
Accessories for Cradle
Shutter padlock
The hole to lock the shutters (load and line side) in close position, to
increase the safety during the maintenance of a VCB draw-out
position.
(Hole size = ∅8)
Mechanically operated cell switch (MOC)
-for G class draw-out type only
The auxiliary switch (3a4b), which Indicate the 'ON' or 'OFF' condition
of a VCB, but operated only when the VCB is in 'Run' state. (Installed
in the bottom of a cradle)
Truck operated cell switch (TOC)
-for G class draw-out type only
The auxiliary switch (3a4b), which indicate the 'Run' state of a VCB
and is operated by the movement of a VCB frame. (Installed in the
bottom of a cradle)
Code plate (Miss insertion prevention)
-for E, F class draw-out type only
To prevent the insert a VCB to a cradle, when the ratings of VCB and
cradle are different.
Padlock
To prevent the insert draw-in/out handle to a screw hole by operating
G class VCB temporarily
44
Note) #11, 21 are Early “b” contact
Note) #11, 21 are Early “b” contact

Optional accessories
Capacitor trip device (CTD)
When the control power is off, the CTD supply the power for
tripping a VCB.
Type VCB-T1 VCB-T2
Rated input voltage AC100/110V AC200/220V
Tripping time Within 30 Sec. after the AC power off
Voltage of the CTD DC100/110V DC200/220V
��Dimension
8-∅7
Mounting
hole
90
80
22.5
20 22.5
165
250
��Connection circuit diagram
Standard tool
Pilot lamp
145 11 124
E, F class G class
Handle for draw-in and out
Handle for draw-in and out the VCB
(Standard feature in the draw-out type)
55
2-∅35
52
Rectifier
When the DC power is not available, rectify the AC power and
get the DC power for closing coil.
Type AC Input voltage Output current Rating time
VCB-X
��Dimension
2-∅7
Mounting
hole
100 20
1∅ 100/110V
1∅ 200/220V
150
90 94
��Connection diagram
40A DC 10 sec.
Manual charging handle
Handle for charging the spring manually.
(Standard feature)
35
25 2-∅20
45

Vacuum Circuit Breaker
Types and ordering information
7.2kV & 24kV
Cradle
46
LVB 20 G 13 D 06 1A 2B B, C1, D1
LG VCB
Rated voltage
06 7.2kV
20 24kV
LG Cradle
Installation method
P Fixed type
E E class draw-out type
F F class draw-out type
G G class draw-out type
M
G class draw-out type
+ Bushing
Breaking current
13 12.5kA
16 16kA
20 20kA
25 25kA
32 31.5kA
40 40kA
Note) In case 24kV, only
both of 12.5kA,
16kA, 25kA and
25kA are available.
Revision No.
A Conventional
D Pro-MEC
E Pro-MEC
(Minimized type)
Note) E type is available for
24kV enclosed type G
class only. (Distance
between phase and
phase is 210mm.)
Breaking current
8 8kA
13 12.5kA
16 16kA
20 20kA
25 25kA
32 31.5kA
40 40kA
Rated current
06 630A
12 1250A
20 2000A
30 3150A
Note) In case 24kV, only
both of 12.5kA,
16kA and 25kA are
available.
Control voltage
00 -
1A DC110V
1B DC220V
1C DC48V
1D DC24V
1E DC125V
Auxiliary switch
00 -
2B 4a4b(AMP Jack)
2E 10a10b(AMP Jack)
2G 4a4b(Phoenix Jack)
2H 10a10b(Phoenix Jack)
Note) “00”is for Earthing
Truck and Dummy VCB.
Accessories
B Position Switch (RUN/TEST:2a2a)
C1 Button Padlock (ON)
C2 Button Padlock (OFF)
C3 Button Padlock (ON/OFF)
D1 Button Cover (ON)
D2 Button Cover (OFF)
D3 Button Cover (ON/OFF)
Button padlock (ON)
E
+ Button cover (OFF)
Button padlock (OFF)
F
+ Button cover (ON)
G Key Lock
Secondary Trip Coil
H
(Preparatory trip coil)
J Fire-endurable wiring cable ass’y
K Opening Latch Checking Switch
P1 Dummy VCB (AMP Jack)
P2 Dummy VCB ( Phoenix Jack)
Q Earthing Truck (Lower)
R Earthing Truck (Upper)
S Pad Lock (G class)
T Enclosed type, Tulip contact
Optional accessories
N CTD (Capacitor Trip Device)
O Rectifier
LCL 20 G 13 D 06 A, B, C
Rated voltage
06 7.2kV
20 24kV
Installation method
E E class draw-out type
F F class draw-out type
G G class draw-out type
Revision No.
A Conventional
D Pro-MEC
E
Pro-MEC
(Minimized type)
Note) E type is available for
24kV enclosed type G
class only. (Distance
between phase and
phase is 210mm.)
Rated current
04 400A
06 630A
12 1250A
20 2000A
30 3150A
Accessories
A MOC (3a4b)+ TOC (3a4b)
B Earthing Switch
Earthing Switch Position Switch +
C
Earthing Switch Locking coil
T Enclosed type, Tulip contact
Note) ‘A’, ‘B’, ‘C’ is for ‘G’ class only

12kV
LVB 12 G 25 D 06 1A 2B B, C1, D1
LG VCB
Rated voltage
12 12kV
Cradle
LG Cradle
17.5kV
Cradle
LCL 17 G 25 D 06 A, B, C
LG Cradle
Rated voltage
17 17.5kV
Installation method
G G class draw-out type
M
G class draw-out type
+ Bushing
Breaking current
25 25kA
32 31.5kA
Revision No.
D Pro-MEC
Breaking current
25 25kA
32 31.5kA
Rated current
06 630A
12 1250A
20 2000A
Auxiliary switch
2B 4a4b(AMP Jack)
2E 10a10b(AMP Jack)
2G 4a4b(Phoenix Jack)
2H 10a10b(Phoenix Jack)
LCL 12 G 25 D 06 A, B, C
Rated voltage
12 12kV
Installation method
G
G class
draw-out type
Revision No.
D Pro-MEC
Control voltage
1A DC110V
1B DC220V
1C DC48V
1D DC24V
1E DC125V
Rated current
06 630A
12 1250A
20 2000A
LVB 17 G 25 D 06 1E 2B B, C1, D1
LG VCB
Rated voltage
17 17.5kV
Installation method
P Fixed type
E E class draw-out type
F F class draw-out type
G G class draw-out type
Breaking current
25 25kA
Installation method
E E class draw-out type
F F class draw-out type
G G class draw-out type
Revision No.
D Pro-MEC
Breaking current
25 25kA
Rated current
06 630A
12 1250A
20 2000A
25 2500A
Revision No.
D Pro-MEC
Control voltage
1E DC125V
Auxiliary switch
2B 4a4b(AMP Jack)
2E 10a10b(AMP Jack)
2G 4a4b(Phoenix Jack)
2H 10a10b(Phoenix Jack)
Rated current
06 630A
12 1250A
20 2000A
25 2500A
Accessories
B Position Switch (RUN/TEST:2a2a)
C1 Button Padlock (ON)
C2 Button Padlock (OFF)
C3 Button Padlock (ON/OFF)
D1 Button Cover (ON)
D2 Button Cover (OFF)
D3 Button Cover (ON/OFF)
E Button padlock (ON)+ Button cover (OFF)
F Button padlock (OFF)+ Button cover (ON)
G Key Lock
H Secondary Trip Coil(Preparatory trip coil)
J Fire-endurable wiring cable ass’y
K Opening Latch Checking Switch
S Pad Lock (G class)
T Enclosed type, Tulip contact
Accessories
A MOC (3a4b)+ TOC (3a4b)
B Earthing Switch
C
Earthing Switch Position Switch +
Earthing Switch Locking coil
T Enclosed type, Tulip contact
Accessories
B Position Switch (RUN/TEST:2a2a)
C1 Button Padlock (ON)
C2 Button Padlock (OFF)
C3 Button Padlock (ON/OFF)
D1 Button Cover (ON)
D2 Button Cover (OFF)
D3 Button Cover (ON/OFF)
E Button padlock (ON) + Button cover (OFF)
F Button padlock (OFF) + Button cover (ON)
G Key Lock
H Secondary Trip Coil(Preparatory trip coil)
K Opening Latch Checking Switch
S Pad Lock (G class)
Accessories
A MOC (3a4b)+ TOC (3a4b)
Note) ‘A’ is for ‘G’ class only
47

Vacuum Interrupter
Features & Ordering information
48
Features
�Small Size and Light Weight
�High performance, reliability, and
long life are assured.
�Maintains High Vacuum
�High-alumina ceramics provide
superior mechanical strength and
easy degassing.
�High speed interruption and short
arcing time.
�The LG Vacuum Interrupter can
meet all IEC, ANSI and NEMA
performance standards.
Ordering Information
LV 07 08 0 A
Basic type
L LG
V Vacuum
Rated voltage
07 7.2kV
/ 12kV
10 15kV
24 24kV
Rated short
circuit current
04 4.5kA
08 8kA
12 12.5kA
16 16kA
20 20kA
25 25kA
31 31.5kA
40 40kA
50 50kA
Ampere
Below
0
630A
1 1250A
2 2000A
3 3150A
Revision No.

Structure
The internal components of a typical Vacuum Interrupter are shown in Figure1.
LG Vacuum Interrupter consists of a ceramic insulator, two end plates, arc shield,
bellows, a movable and fixed electrode, and contact set.
The ambient gas pressure within the evacuated tube is
approximately 10-6 torr.
Fixed Electrode
Figure 1. Vacuum Interrupter Schematic
Movable electrode
Movable End Plate
Bellows
Bellows shield
Ceramic
Arc shield
Contact
End shield
Fixed End Header
49

Vacuum Interrupter
Operating characteristics
50
Figure 2. Current flow and driving force
on arc for spiral contact
Fault
current
(ⅰ) Weld
(ⅱ) Bridge explosion
Arc initiation
Current path
Driving force on
the high current
ARC
ARC
(ⅰ) Contact jets
(ⅱ) Shield involvement
High current arc mode
Figure 3. AC arcing and interruption phenomena in vacuum.
In the closed position, normal current flows through
the interrupter. When a fault occurs and interruption
is required, the contacts are quickly separated.
The arc drawn between the surfaces of contacts is
rapidly moved around the slotted contact surface
by self induced magnetic effects, preventing gross
contact erosion and the formation of hot spot on
the surface.
The arc burns in an ionized metal vapor, which
condenses on the surrounding metal shield. At
current zero the arc extinguishes and vapor
production ceases.
The metal vapor plasma is very rapidly dispersed,
cooled, recombined, and deionized, and the metal
vapor products are quickly condensed so that the
contacts withstand the transient recovery voltage.
(ⅰ) Arc instability
(ⅱ) Interruption
Current
zero
Time (ms) Time (㎲)
Recovery
voltage
Voltage Phenomena
(ⅰ) Arc reignition
(ⅱ) Restrikes
(ⅲ) B. I. L
(ⅳ) AC voltage
withstand

Ratings and Specifications
Electrical ratings
Mechanical data
Mechanical requirements
Type LV-07040A LV-07080 LV-07130 LV-07251B
Outer view
Rated voltage (kV)
Rated power frequency withstand voltage (kV, rms)
Rated impulse withstand voltage (kV, crest)
Rated frequency (Hz)
Rated normal current (Amp)
Rated short circuit current (Sym.) (kA)
Rated short circuit making current (kA, peak)
Rated duration of short-circuit (sec)
Interrupter weight (kg)
Moving part weight (kg)
Outline dimension (mm) a
Contact stroke (mm)
Opening speed, average 0 to 75% of full stroke (m/s)
Overtravel during opening, Max. (mm)
Closing speed, average last 33% of full stroke (m/s)
Contact bounce duration, Max. (sec)
Added force from atmospheric pressure (kg�f)
Contact force from atmospheric pressure (kg�f)
Contact erosion limit (mm)
Mechanical life (×10 4 , Operations)
b
c
3.6 7.2 7.2 7.2 7.2
11.5 20 20 20 20
60 60 60 60
50/60 50/60 50/60 50/60
400 630 630 1,250
4.5 8 12.5 20 25
- 20.8 32.5 52 65
- 3 3 3
0.48 0.83 0.85 1.8
0.19 0.4 0.4 0.6
114 132 132 190
78 92 92 123
62 62 62 79
3 5 6 6 8
0.6 0.7~1.0 0.7~1.0 0.7~1.0
1 2 2 2
0.3 0.7~1.0 0.7~1.0 0.7~1.0
0.002 0.002 0.002 0.002
5 50 80 154 227
9 9.1 9.1 15.9
1 3 3 3
100 3 3 3
51

Vacuum Interrupter
Ratings and Specifications
Electrical ratings
Mechanical data
Mechanical requirements
52
Type LV-07251 LV-10252 LV-10312 LV-10403
Outer view
Rated voltage (kV)
Rated power frequency withstand voltage (kV, rms)
Rated impulse withstand voltage (kV, crest)
Rated frequency (Hz)
Rated normal current (Amp)
Rated short circuit current (Sym.) (kA)
Rated short circuit making current (kA, peak)
Rated duration of short-circuit (sec)
Interrupter weight (kg)
Moving part weight (kg)
Outline dimension (mm) a
Contact stroke (mm)
Opening speed, average 0 to 75% of full stroke (m/s)
Overtravel during opening, Max. (mm)
Closing speed, average last 33% of full stroke (m/s)
Contact bounce duration, Max. (sec)
Added force from atmospheric pressure (kg�f)
Contact force from atmospheric pressure (kg�f)
Contact erosion limit (mm)
Mechanical life (×10 4 , Operations)
b
c
12 15 7.2 12 15 17.5 7.2 12 15 17.5
28 36 20 28 36 50 20 28 36 50
95 60 95 95 60 95
50/60 50/60 50/60 50/60
1,250 2,000 2,000 3,150
25 20 25/31.5 31.5 40
65 52 65/81.9 81.9 104
3 3 3 3
1.9 4.1 4.3 6.4
0.7 0.84 0.9 1.7
209 230 230 257(272)
169 181 181 213
79 103 108 135
8 12 8 10 12 8 12
1.0~1.3 0.7~1.0 1.0~1.3 1.2~1.6 0.7~1.0 1.0 1.2
2 2 1.5 3 3 1.5
0.7~1.0 0.7~1.0 0.7~1.0 0.7~1.0
0.002 0.002 0.002 0.002
227 154 227/306 306 367
15.9 16.8 16.8 25
3 3 3 3
3 1 5 3 1 5 2

LV-24120 LV-24121 LV-24252 LV-24403 LV-12503 LV-25000
24 24 24 25.8 24 25.8 4.76 12 25.8
50 50 50 70 19 48 60
125 125 125 150 60 95 125
50/60 50/60 50/60 50/60 50/60 50/60
630 1,250 2,000 3,150 3,150 600
12.5 12.5 16 25 40 31.5 50 0.6
32.5 32.5 41.6 65 101 81.9 130 32.5
3 3 3 3 3 1
1.7 2.6 5.0 6.4 7.6 0.91
0.4 0.7 1 1.7 2.9 0.36
235 235 270 272 272 212
163 174 225 213 213 145
75 95 108 135 135 62
15 15 17 17 10 9.5
1.0~1.3 1.0~1.3 1.0~1.3 1.0~1.3 1.2~1.5 0.9~1.1
2 2 1.5 1.5 3 1.5
0.7~1.0 0.7~1.0 0.7~1.0 1.0~1.3 0.7~1.0 0.76
0.002 0.002 0.002 0.002 0.002 1.002
80 80 120 227 367 306 380 57
9.1 15.9 16.8 25 25 9.1
3 3 3 3 2 2.54
1 1 1 1 2 1
53

Vacuum Interrupter
Dimensions
54
LV-07040A LV-07080/LV-07130 LV-07251
LV-07251B LV-10252/LV-10312 LV-10403
Note) LV-10312 ∅108
Note)

LV-12503 LV-24120 LV-24121A
LV-24252A LV-24403 LV-25000
55

�� HEAD OFFICE
2004. AUG-2
Safety Instructions
LG TWIN TOWERS, 20 Yoido-dong, Youngdungpo-gu,
Seoul, 150-721, Korea
Tel. (82-2)3777-4870
Fax. (82-2)3777-4713
http://www.lgis.com
Specifications in this catalog are subject to change without notice due to
continuous product development and improvement.
Leader in Electrics & Automation
�� For your safety, please read user's manual thoroughly before operating.
�� Contact the nearest authorized service facility for examination, repair, or adjustment.
�� Please contact a qualified service technician when you need maintenance.
Do not disassemble or repair by yourself!
�� Any maintenance and inspection shall be performed by the personnel having expertise concerned.
www.lgis.com
�� Global Network
��LG Industrial Systems Tokyo Office Japan
Address: 16F, Higashi-Kan, Akasaka Twin Towers 17-22, 2-chome,
Akasaka, Minato-ku Tokyo 107-8470, Japan
Tel: 81-3-3582-9128 Fax: 81-3-3582-0065 e-mail: dongjins@lgis.com
��LG Industrial Systems Dubai office UAE
Address: P.O.Box-114216, API World Tower, 303B, Sheikh Zayed road, Dubai, UAE.
Tel: 971-4-3328289 Fax: 971-4-3329444 e-mail: hwyim@lgis.com
��LG-VINA Industrial Systems Co., Ltd Vietnam
Address: LGIS VINA Congty che tao may dien Viet-Hung Dong Anh Hanoi, Vietnam
Tel: 84-4-882-0222 Fax: 84-4-882-0220 e-mail: srjo@hn.vnn.vn
��LG Industrial Systems Hanoi Office Vietnam
Address: Room C21, 5Th Floor, Horison Hotel, 40 Cat Linh , Hanoi, Vietnam
Tel: 84-4-736-6270/1 Fax: 84-4-736-6269
��Dalian LG Industrial Systems Co., Ltd China
Address: No. 15 Liaohexi 3 Road, economic and technical
development zone, Dalian, China
Tel: 86-411-8731-8210 Fax: 86-411-8730-7560 e-mail: youngeel@lgis.com
��LG Industrial Trading (Shanghai) Co., Ltd China
Address: Room 1705-1707, 17th Floor Xinda Commercial Building No 322,
Xian Xia Road Shanahai, China
Tel: 86-21-6252-4291 Fax: 86-21-6278-4372 e-mail: hgseo@lgis.com
��LG Industrial Systems Beijing Office China
Address: Room 303, 3F North B/D, EAS 21 XIAO YUN ROAD,
Dong San Huan Bei Road, Chao Yang District, Beijing, China
Tel: 86-10-6462-3259/4 Fax: 86-10-6462-3236 e-mail: sclim@mx.cei.gov.cn
��LG Industrial Systems Shanghai Office China
Address: Room 1705-1707, 17th Floor Xinda Commercial Building
No 318, Xian Xia Road Shanahai, China
Tel: 86-21-6278-4370 Fax: 86-21-6278-4301 e-mail: sdhwang@lgis.com
��LG Industrial Systems Guangzhou Office China
Address: Room 303, 3F, Zheng Sheng Building, No 5-6, Tian He
Bei Road, Guangzhou, China
Tel: 86-20-8755-3410 Fax: 86-20-8755-3408
e-mail: lgisgz@public1.guangzhou.gd.cn
Vacuum Circuit Breakers(E) 2004. 08/(01) 2004. 08 Printed in Korea STAFF