Speedfax 2017

Molded Case Circuit Breakers
Reference Guide
Revised on 10/31/18
Selection/Application
7
MOLDED CASE
CIRCUIT BREAKERS
Thermal-Magnetic Trip Breakers
General Purpose Breakers
LMD6,
LMXD6
HLMD6,
HLMXD6
MD6,
MXD6
HMD6,
HMXD6 CMD6
ND6,
NXD6
HND6,
HNXD6 CND6
PD6, b
PXD6 b
HPD6, b
HPXD6 b CPD6 b
Page 7-125 7-126 7-128 7-129 7-129 7-132 7-133 7-133 7-136 7-136 7-136
Poles 2, 3 2, 3 2, 3 2, 3 3 2, 3 2, 3 3 3 3 3
Ratings
AC
DC
Dimensions
in inches
Amperes, Continuous
Volts 50/60 HZ
Interrupt Rating
Symmetrical RMS Amperes
500-
800
500-
800
500-
800
500-
800
400-
800
2-Pole
3-Pole
600 600 600 600 600 600 600 600 600 600 600
240V 65,000 100,000 65,000 100,000 200,000 65,000 100,000 200,000 65,000 100,000 200,000
UL
480V 50,000 65,000 50,000 65,000 100,0001 50,000 65,000 100,000 50,000 65,000 100,000
600V 25,000 50,000 25,000 50,000 65,0001 25,000 50,000 65,000 25,000 50,000 65,000
415V Ics — — 20,000 33,000 — 20,00011 33,000 — — — —
220/ Icu — — 65,000 100,000 — 65,000 100,000 — — — —
240V Ics — — 33,000 50,000 — 33,0001 50,000 — — — —
IEC 947-2
50/60HZ c 380/ Icu — — 40,000 65,000 — 40,0001 65,000 — — — —
500V
Icu — — — — —1 — — — — — —
Ics — — — — — —1 — — — — —
2-Pole 250V DC Interrupting Ratings 30,000 30,000 30,000 30,000 30,0001 30,0001 30,000 30,000 30,000 30,000 30,000
3-Pole, 500V DC Interrupting Ratings a 25,000 50,000 25,000 50,000 50,000 25,00011 50,000 50,000 25,000 50,000 50,000
Circuit breakers require
Connect-all mounting
block. Dims shown are
for circuit breaker only.
Height 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.0 16.00 16.00
Width 7.50 7.50 9.00 9.00 9.00 9.00 9.00 9.00 9.00 9.00 9.00
Depth 4.59 4.59 6.19 6.19 6.19 6.191 6.19 6.19 6.19 6.19 6.19
Overcurrent Thermal and Adjustable Magnetic Trip u u u u u u u u u u u
Devices Adjustable Magnetic Trip Only
Motor Circuit Protector
u — u — u — — — — —
—
Molded Case Switch u — u u — —
Accessories Undervoltage Trip u — u — u u u u u u u
and Shunt Trip u u u u u u u u u u u
Modifications
Auxiliary Switch u u u u u u u u u u u
Alarm Switch u u u u u u u u u u u
Mechanical Interlock u u u u u u u u u u u
Rear Connections Studs u u u u u u u u — — —
Electric Motor Operator u u u u u u u u u u u
Plug-in Mounting Assembly u u u u u u u u — — —
Fungus Proofing (ref. page 7-156) — — u u u u u u u u u
Mounting Block (required) — — — — — — — — u u u
Individual
Enclosures
Type 1 — Indoor Surface u u u u u u u u u u u
Type 1 — Indoor, Flush — — — — — — — — — — —
Type 3R — Outdoor-Rainproof u u u u u u u u — — —
Type 7 — Flammable Gas Atmosphere — — — — — — — — — — —
Type 9 — Combustion Dusttight — — — — — — — — — — —
Type 5, 12 — Lint, Fine Dust, Oils,
Coolants
— — — — — — — — — — —
Type 12K — Semi-Dusttight u u u u u u u u — — —
800-
1200
800-
1200
800-
1200
1200-
1600
1200-
1600
1200-
1600
For inches / millimeters conversion, see Application Data section.
a For DC UPS application.
b Requires Connect-all mounting assembly. Dimensions
shown are for circuit breaker only.
c Only applicable to non-interchangeable trip unit types:
NXD6, HNXD6, MXD6 and HMXD6
7-14
Siemens Industry, Inc. SPEEDFAX Product Catalog