SE Digest 178

Miniature Circuit Breakers

Selection Information

Class 500, 600

www.se.com/us

QO-GFI, QO-EPD, QOU, QOM Miniature Circuit Breakers QO Circuit Breakers QOU Circuit Breakers

QOM1 and QOM2 Main Circuit Breakers

QO-EPD QO-EPE QOB-EPD QOB-EPE

QO VHGFI QOB VHGFI

Plug-on

QO-GFI

—

—

—

—

Circuit Breaker Type

QOB-GFI

Bolt-on

—

— QOM1-VH QOM2-VH

QYU [10]

QOU

UnitMount

— — — — — — —

—

—

Number of Poles Current Range (A) Interrupting Ratings

1

2

3

1

1

2

3

1

2

3

1

2

2

15–30 15–60 15–50 15–30 15–30 15–60 15–50 10–100 10–125 10–100

10–30

50–125

100–225

120Vac

10

10

— 22

10

10

— 10 — 10

10 10

10 10

— —

22 22 — — — — — — — — — — —

22 22 — — — — — — — — — — —

120/240 Vac 208Y/120 240Vac [11]

— 10

— — — 10

UL/CSA Rating (kARMS) (50/60Hz)

— — 10

— — — —

— — — — — — 10

— — 10

—

277Vac

—————————— —————————— — 5

480Y/277 Vac

5 [12] 5 [13]

5 [12] 5 [13]

— — — — — — — 5 [12] — — — — — — — 5 [13]

48Vdc 60Vdc 65Vdc 125Vdc 250Vdc 500Vdc 240Vac 415Vac

— —

—————————— — —————————— — —————————— — —————————— — —————————— — —————————— —

DCRatings

IEC 60947-2 (50/60Hz) Icu Special Ratings CCC

X [14]

X [14]

— — — — — — — X [14]

—

—

—

Fed. Specs W-C-375B/GEN

X

—

— X

—

X

X

X

X

X

X

HACR [15]

Other Standard

NOM

—

NOM

—

—

—

Accessories and Modifications Shunt Trip

X [16]

X [16]

X [16]

X [16]

— — — — — — — X [16]

— — — — —

Undervoltage Trip Auxiliary Switches

—————————— —

— — — —

X [16] X [16]

X [16] X [16]

X [16] X [16]

X X [16] X X [16]

X X

X X

X X

X X

X X

X X

Alarm Switch

Handle Operators

—————————— —

Handle Padlock Attachment

X

X

X

X

X

X

X

X

X

X

X

X

X

Trip System Type Thermal-magnetic Molded Case Switch

X

X

X

X

X

X

X

X

X

X X

X

X

X

— — — — — — — — X

—

—

—

Dimensions (1P Unit Mount)

5.60 (142) [17] 5.07 (129) [17] 3.60 (91) [17]

Height

4.12 (103)

4.05 (103)

5.09 (129) [17]

Dimensions (1P Unit Mount) in. (mm)

0.75 (19)

0.75 (19)

5.00 (127) [17]

Width

Depth

2.92 (74) page7-11

2.92 (74) page7-19

3.47 (88) [17]

Pages

See Section 1

NOTE: All circuit breakers on this chart are UL Listed and CSA Certified unless otherwise noted.

[10] QYU is a UL 1077 supplementary protector. [11] For information regarding 3Ø corner grounded systems see the Supplemental Digest, Section 3. [12] 1P and 2P, 10–70 A and 3P 10–60 A only. [13] QOU is UL Listed for 60 Vdc per pole 80–100 A, 1P; 80–125 A, 2P; and 70–100 A, 3P. [14] 15–70 A 1P and 2P, 15–60 A 3P [15] HACR on QOU 1P and 3P 15–100 A, 2P 15–125 A; [16] Factory-installed option only. [17] QOM1 and QOM2 dimensions are for 2-pole unit.

CIRCUIT BREAKERS

7 MINIATURE AND MOLDED CASE

7-3

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