
DE3
CIRCUIT BREAKERS
01/15
DE3-9
Selection Information
Molded Case Circuit Breaker
400 A L-Frame
Circuit Breaker Type Q4 LA LH
Number of Poles 2, 3 2, 3 2, 3
Current Range 250–400 125–400
125–400
Interrupting Ratings
UL/CSA/NOM
Rating
(kA RMS)
(50/60 Hz)
240 Vac 25 42 65
480Y/277 Vac — 30 35
480 Vac — 30 35
600Y/347 Vac — 22 25
600 Vac — 22 25
DC Ratings
250 Vdc — 10 50
500 Vdca — — 20
IEC 60947-2
(kA RMS)
Icu/lcsb
240 Vac — — —
415 Vac — 20/5
20/5
Special Ratings
CCC — — —
Fed. Specs W -C-375B/GEN X X X
HACR (2P, 3P) — X
X
Connections/Terminations
Unit Mount X X X
I-Line™ X X X
Rear Connection X X X
Draw out — — —
Optional Lugs X X
X
Accessories and Modifications
Shunt Trip X X X
Undervoltage Trip X X X
Auxiliary Switches X X X
Alarm Switch X X X
Motor Operator X X X
Handle Operators X X X
Mechanical Interlocks (3P) — X
o Xo
Handle Padlock Attachment X X X
Cylinder Lock (3P) X X X
Optional GF Protection — —
—
Trip System Type
Thermal-magnetic X X X
Instantaneous-only (MCP) — X X
Molded Case Switch (Automatic) — — X
Electronic — —
—
Enclosures (Pages DE3-56–DE3-58)
General Purpose (NEMA 1) X X X
Raintight (NEMA 3R) X X X
Dust-tight (NEMA 12) X X X
Watertight (NEMA 4, 4X, 5) X X X
Explosion Proof (NEMA 7, 9) — — —
Dimensions
(3P
Unit
Mount)
in. (mm)
Height 11 (279)
Width 6 (152)
Depth 5.84 (148)
Pages (Unit Mount)/(I-Line) DE3-64 / Section DE5
Note: All circuit breakers on this chart are UL Listed and CSA Certified unless otherwise noted.
a Ungrounded
UPS
systems only. See page DE3-35.
b Dual CSA/UL and IEC ratings and CE markings on circuit breakers.
c Requires circuit
breaker with WB suffix .
Class 500, 600, 800
DE3_p09.fm Page 9 Saturday, January 10, 2015 2:11 AM
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