Speedfax 2017

Molded Case Circuit Breakers
Reference Guide
Revised on 11/30/19
Selection/Application
Thermal-Magnetic Trip Breakers
General Purpose Breakers
CQD NGG HGG LGG
Page 7-42 7-43 7-43 7-43
Poles 1, 2, 3 1, 2, 3 1, 2, 3 1, 2, 3
1-Pole 15–100 15–125 15–125 15–125
Amperes, Continuous
2-Pole 15–100 15–125 15–125 15–125
3-Pole 15–100 15-125 15–125 15–125
1-Pole 277 347 347 347
Volts (50/60 Hertz)
2-Pole 480/277 600/347 600/347 600/347
3-Pole 480/277 600/347 600/347 600/347
120V 65,000 65,000 65,000 65,000
UL
240V 65,000 65,000 65,000 65,000
480V 14,000 25,000 35,000 65,000
600/347V 10,000 b 14,000 14,000 14,000
AC
Icu 18,000
1-Pole
25,000 — —
220/
Ics 9,000 d 12,500 — —
240V
Ratings
DC
Dimensions
in inches
Overcurrent
Devices
Accessories and
Modifications
Individual
Enclosures
Interrupt Rating Symmetrical RMS Amperes
IEC
947-2
50/
60Hz
380/
415V
500V
2,3-
Pole
1-Pole
2,3-
Pole
1-Pole
2,3-
Pole
Icu 65,000 d 65,000 — —
Ics 32,500 d 32,500 — —
Icu — — — —
Ics — — — —
Icu 18,000 d 25,000 — —
Ics 9,000 d 12,500 — —
Icu — — — —
Ics — — — —
Icu — — — —
Ics — — — —
Volts — 2-Pole 125/250 125/250 125/250 125/250
Interrupting Rating — DC Amperes 14,000 14,000 14,000 14,000
15–50A 4.50 5.40 5.40 5.40
Height
55–125A 4.50 5.40 5.40 5.40
60–225A — — — —
1-Pole 1.00 1.00 1.00 1.00
Width
2-Pole 2.00 2.00 2.00 2.00
3-Pole 3.00 3.00 3.00 3.00
Depth 2.87 2.90 2.90 2.90
Thermal and Fixed Magnetic Trip u u u u
Molded Case Switch — — — —
Undervoltage Trip — — — —
Shunt Trip u u u u
Auxiliary Switch u u u u
Alarm Switch u u u u
Mechanical Interlock — — — —
Fungus Proofing (ref. page 7-156) u u u u
Type 1 — Indoor Surface — u u u
Type 1 — Indoor, Flush — u u u
Type 3R — Outdoor-Rainproof — u u u
Type 5, 12 — Lint, Fine Dust, Oils, Coolants — — u u
7
MOLDED CASE
CIRCUIT BREAKERS
CQD120
LGG2B020L
For inches / millimeters conversion, see Application Data section.
CQD breakers are rated 14,000 KAIC at 480/277V.
Type CQD6—CSA only.
3-pole only.
d Applicable for 15-30A breakers only.
Siemens Industry, Inc. SPEEDFAX Product Catalog 7-9