Killark-Hubbell Electrical Products GCBB SERIES Catalog Page

DE24

G C B B S E R I E S • D I S T R I B U T I O N E Q U I P M E N T

C I R C U I T B R E A K E R L O A D C E N T E R S

Class I, Div. 1 & 2, Groups B,C,D
Class l, Zones 1 & 2, Groups llB+H
Class II, Div. 1 & 2, Groups E,F,G
Class III
NEMA 3R, 7(B,C,D) 9(E,F,G)

, IIA

2

Applications

• Indoor or outdoor hazardous areas

where flammable gases or vapors,
combustible dusts, or easily ignitable
fibers or flyings may be present

• Provides overcurrent and short

circuit protection of branch lighting,
heating and appliance circuits

Features

• Compact rectangular enclosure with

threaded cover allows easy access

• GCBB/2GCBB provided with two 3/4"-

14 NPT drilled and tapped conduit
openings, one top and one bottom

• 3GCBB provided with three 3/4" - 14

NPT drilled and tapped conduit
openings, one top and two bottom

• 4GCBB provided with four 3/4"-14

NPT drilled and tapped conduit
openings, two top and two bottom

• Cutler-Hammer Type QC Quicklag

Circuit Breakers (These Assemblies
include the Breakers as indicated)

• Push pull handle mechanism oper-

ates circuit breakers

• Handle mechanism supplied as stan-

dard with “Lockout” in off position

• Enclosures are made from copper-

free cast aluminum alloy (less than
4/10 of 1%)

• Special combinations of breaker

amperage are available, consult
factory for details

Dimensions

Li ste d - F il e E83 96 9

c

Se e f il es f or d eta il s or ca ll Kil la rk .

F E AT U R E S - S P E C I F I C ATIONS

G C BB 15/ 4 0 A T R I P Q U ICK L A G

CA TAL OG NU MB ER

ON E 1-P OLE ON E 2 -P OLE O NE 3- PO LE TWO 1-POLE
12 0 VOLTS AC 12 0/240 VOLTS AC 24 0 VOLTS AC 12 0/240 VOLTS AC

GCBB-15Q1 GCBB-15Q2 GCBB-15Q3 2GCBB-15Q1 15

GCBB-20Q1 GCBB-20Q2 GCBB-20Q3 2GCBB-20Q1 20

GCBB-30Q1 GCBB-30Q2 GCBB-30Q3 2GCBB-30Q1 30

GCBB-40Q1 GCBB-40Q2 GCBB-40Q3 2GCBB-40Q1 40

GCBB-1Q GCBB-2Q GCBB-2Q 2GCBB-1Q Enclosure only

G C BB 15/ 4 0 A T R I P Q U ICK L A G

CA TAL OG NU MB ER

TH REE 1-POLE FO UR 1- PO LE TW O 2-P OLE ONE 1-POLE ONE 3-POLE
12 0 VOLTS AC 12 0 VOLTS AC 1 20 /240 V OLT S A C 120/240 VOLTS AC

3GCBB-15Q1 4GCBB-15Q1 2GCBB-15Q2 2GCBB-15Q13 15

3GCBB-20Q1 4GCBB-20Q1 2GCBB-20Q2 2GCBB-20Q13 20

3GCBB-30Q1 4GCBB-30Q1 2GCBB-30Q2 2GCBB-30Q13 30

3GCBB-40Q1 4GCBB-40Q1 2GCBB-40Q2 2GCBB-40Q13 40

3GCBB-1Q 4GCBB-1Q 2GCBB-2Q 2GCBB-13Q Enclosure only

M O DIF I C ATIO N S

SU FFIX N UM BE R DE SCRIPTI ON

SU3 Dr ain a nd b re at he r

KIT- 2 51 15 0 a mp gro un d lug

KIT- 2 52 25 0 a mp gro un d lug

SU1 7 So lid n eu tral

I N TER R U P T I NG RAT I N G S

FRAME
SIZE ASYMMETRICAL SYMMETRICAL

VOLTAGE

QC 120 /240 VAC 10, 000 10, 000

QC 240 VAC 10, 000 10, 000

QC 24/ 48 DC 5,0 00 5,000

QC 62/ 80 DC 3,8 00 3,800

AMPS AMPS

TR IP
AM PS

TR IP
AM PS

GCBB/2GCBB 3GCBB/4GCBB