
DE3
CIRCUIT BREAKERS
01/15
DE3-7
Selection Information
Insulated Case Circuit Breakers
Masterpact 1200 A Masterpact 6000 A
Circuit Breaker Type NT-N NT-H NT-L1 NT-L NT-LF a NW-N NW -H NW -L NW-LF a NW-H NW-L NW -H NW -L
Number of Poles 3,4 3, 4 3 3 3 3,4 3, 4 3 3 3,4 3 3,4 3
Current Range 100–1200 100–1200 100–1200 100–1200 100–1200 100–2000 100–2000 100–2000 100–2000 640–3000 640–3000 1200–6000
1200–6000
Interrupting Ratings
UL/CSA/NOM
Rating
(kA RMS)
(50/60 Hz)
240 Vac 50 65 100 200 200 65 100 200 200 100 200 100 200
480Y/277 Vac 50 50 65 100 100 65 100 150 150 100 150 100 150
480 Vac 50 50 65 100 100 65 100 150 150 100 150 100 150
600Y/347 Vac 35 50 — — — 50 85 100 100 85 100 85 100
600 Vac 35 50 — — — 50 85 100 100 85 100 85 100
DC Ratings
250 Vdc — — — — — — — — — — — — —
500 Vdc — — — — — — — — — — — — —
IECb
(kA RMS)
Icu/Ics
240 Vac — — — — — — — — — — — — —
415 Vac — — — — — — — — — — —
— —
Special Ratings
CCC — — — — — — — — — — — — —
Fed. Specs W -C-375B/GEN — — — — — — — — — — — — —
HACR (2P, 3P) — — — — — — — — — — — —
—
Connections/Terminations
Unit Mount X X X X X X X X X X X X X
I-Line™ — — — — — — — — — — — — —
Rear Connection X X X X X X X X X X X X X
Draw out X X X X X X X X X X X X X
Optional Lugs — — — — — — — — — — — —
—
Accessories and Modifications
Shunt Trip X X X X X X X X X X X X X
Undervoltage Trip X X X X X X X X X X X X X
Auxiliary Switches X X X X X X X X X X X X X
Alarm Switch X X X X X X X X X X X X X
Motor Operator X X X X X X X X X X X X X
Handle Operators — — — — — — — — — — — — —
Mechanical Interlocks X X X X X X X X X X X X X
P adloc k Attachment X X X X X X X X X X X X X
Cylinder Lock — — — — — — — — — — — — —
Optional GF Protection X X X X X X
X X X X X X X
Trip System Type
Thermal-magnetic — — — — — — — — — — — — —
Instantaneous-only (MCP) — — — — — — — — — — — — —
Molded Case Switch (Automatic) X X X X X X X X X X X X X
Electronic X X X X X X X X X X X X
X
Enclosures
General Purpose (NEMA 1) — — — — — — — — — — — — —
Raintight (NEMA 3R) — — — — — — — — — — — — —
Dust-tight (NEMA 12) — — — — — — — — — — — — —
Watertight (NEMA 4, 4X, 5) — — — — — — — — — — — — —
Explosion Proof (NEMA 7, 9) — — — — — — — — — — — — —
Dimensions
(3P
Unit
Mount)
in. (mm)
Height 12.67 (322) 17.28 (439) 17.28 (439) 17.28 (439)
Width 11.25 (286) 17.74 (450) 17.74 (450) 30.94 (786)
Depth 13.00 (331) 18.38 (467) 18.38 (467) 18.38 (467)
P ages Page DE3-50 and Catalog 0613CT0001 Page DE3-50 and Catalog 0613CT0001
Note: All circuit breakers on this chart are UL Listed and CSA Certified unless otherwise noted.
a Tested
to
show arc flash hazard risk category as reference by NFPA70E.
b See Catalog 0613CT0001 for additional ratings and other information.
Class 600, 800
DE3_p07.fm Page 7 Saturday, January 10, 2015 2:10 AM
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