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© 2019 Schneider Electric
All Rights Reserved
7-7
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Molded Case Circuit Breakers Selection Information
Class 500, 600, 800
PowerPact™ Q-Frame, Q4, LA, LH, L-Frame Molded Case Circuit
Breakers
PowerPact 250 A Q-Frame Q4
400 A LA/LH
PowerPact 600 A L-Frame
Circuit Breaker Type
QB QD QG QJ Q4
LA LH LD LG LJ LL LR
Number of Poles
2, 3 2, 3 2, 3 2, 3 2, 3 2, 3 2, 3 3, 4 3, 4 3, 4 3, 4 3, 4
Current Range (A)
70–250
[42]
70–250
[42]
70–250
[42]
70–250
[42]
250–400 125–400 125–400 70–600 70–600 70–600 70–600 70–600
Interrupting Ratings
UL/CSA/
NOM AC
Rating
(kA RMS)
(50/60 Hz)
240 Vac 10 25 65 100 25 42 65 25 65 100 125 200
480Y/277 Vac — — — — — 30 35 18 35 65 100 200
480 Vac — — — — — 30 35 18 35 65 100 200
600Y/347 Vac — — — — — 22 25 14 18 25 50 100
600 Vac — — — — — 22 25 14 18 25 50 100
UL/CSA/
NOM DC
Ratings
250 Vdc [43]
— — — — — 10 50 — — — — —
500 Vdc [44]
[43]
— — — — — — 20 — 20 — 50 —
IEC AC
Rating
(kA RMS)
(50/60 Hz)
Icu/lcs [45]
220/240 Vac 10/5 10/5 10/5 10/5 — — — 25 65 100 125 150
380/415 Vac 10/5 10/5 10/5 10/5 —
20/5[46] 20/5[46]
18/18 18 65 100 125
440/480 Vac — — — — — — — 18/18 18 65 100 125
500/525 Vac — — — — — — — 18/18 14 25 50 75
690 Vac — — — — — — — — — — — 20
IEC DC
Ratings
250 Vdc — — — — — — — — — — — —
500 Vdc — — — — — — — — — — — —
Special Ratings
CCC — — — — — — — X X X X X
Fed. Specs W-C-375B/GEN
X X X X X X X X X X X X
HACR (2P, 3P)
X X X — — X X X X X X X
Connections/Terminations
Unit Mount X X X X X X X X X X X X
I-Line™ X X X X X X X X X X X X
Rear Connection — — — — X X X X X X X X
Drawout — — — — — — — X X X X X
Optional Lugs
— — — — X X X X X X X X
Accessories and Modifications
Shunt Trip
— — — — X X X X X X X X
Undervoltage Trip
— — — — X X X X X X X X
Auxiliary Switches
— — — — X X X X X X X X
Alarm Switch — — — — X X X X X X X X
Motor Operator
— — — — X X X X X X X X
Handle Operators
— — — — X X X X X X X X
Mechanical Interlocks (3P)
X X X X —
X [47] X [47]
X X X X X
Handle Padlock Attachment X X X X X X X X X X X X
Cylinder Lock (3P[48])
— — — — X X X — — — — —
Optional GF Protection[49]
— — — — — — — X X X X X
Trip System Type
Thermal-magnetic
X X X X X X X — — — — —
Instantaneous-only (MCP)
— — — — — X X — X X X X
Molded Case Switch
(Automatic)
X — — — — — X — X — X X
Electronic — — — — — — — X X X X X
Enclosures (page 7-80–page 7-82)
General Purpose (NEMA 1)
X X X X X X X — — — — —
Raintight (NEMA 3R)
X X X X X X X — — — — —
Dust-tight (NEMA 12)
— — — — X X X
X [50] X [50] X [50] X [50] X [50]
Watertight (NEMA 4, 4X, 5)
— — — — X X X — — — — —
Explosion Proof (NEMA 7, 9)
— — — — — — — — — — — —
Dimensions
(3P Unit
Mount)
in. (mm)
Height 6.47 (164) 11 (279) 13.38 (340)
Width
4.5 (114) 6 (152) 5.51 (140)
Depth 3.93 (100) 5.84 (148) 4.33 (110)
Pages (Unit Mount) / (I-Line) page 7-34 / Supplemental Section 9 page 7-35 / Supplemental Section 9 page 7-36 / Supplemental Section 9
NOTE: All circuit breakers on this chart are UL Listed and CSA Certified unless otherwise noted.
7
MINIATURE AND MOLDED CASE
CIRCUIT BREAKERS
[42] I-Line Q-frame circuit breakers are available 70–225 A only. 250 A Q-frame unit-mount circuit breakers are limited to Cu conductors only.
[43] Not available with electronic trip units
[44] Ungrounded UPS systems only. See page 7-43. Special DC J-Frame only.
[45] Dual UL and IEC ratings and CE markings on circuit breakers. For additional IEC ratings, see the Supplemental Digest, Section 10.
[46] For additional IEC ratings, see the Supplemental Digest Section 10.
[47] Requires circuit breaker with WB suffix .
[48] Factory-installed option only.
[49] Requires factory-installed “G” shunt trip and 3P module.
[50] Enclosure rating 1, 3R, 5 and 12.,
9/13/2019