GE
GE THQB1140 Miniature Circuit Breaker 40A 1 Pole 120/240V AC
Single-pole bolt-on breaker rated 40 A at 120/240 V AC with 10 kA interrupting capacity for lighting panels and load centres
- 40 A rating protects 120/240 V AC circuits
- 10 kA interrupting capacity clears faults safely
- Bolt-on mounting fits compatible load centers
- Single-pole design suits standard lighting panels
- UL Listed for code-compliant installations
GE THQB1140 Circuit Breaker Overview
The GE THQB1140 is a miniature circuit breaker rated at 40 amps with a single pole design for 120/240V AC systems. It belongs to the THQB series and features a bolt-on mounting style with a toggle actuator. The unit carries a 10kA interrupting rating and is UL listed for use in lighting panels and load centers.
Suitable Applications and Limitations
This breaker suits installations requiring standard single-phase protection in compatible GE load centers with bolt-on provisions. It accepts copper wire from 14 to 8 MCM and aluminium wire from 12 to 8 MCM. It is not intended for DC circuits, multi-pole configurations, or panels requiring plug-in style breakers. Buyers needing DC voltage ratings or different pole counts should look elsewhere.
Sustained Load Behaviour
Under continuous operation the breaker maintains its 40 amp rating within the 100A frame size limits. The 10kA AIR rating at 120/240V AC indicates its capacity to interrupt fault currents during prolonged stress events. Terminal lugs accommodate the specified wire range to ensure secure connections during extended service periods in lighting panel and load center applications.
Highlights
- 40 A rating protects 120/240 V AC circuits
- 10 kA interrupting capacity clears faults safely
- Bolt-on mounting fits compatible load centers
- Single-pole design suits standard lighting panels
- UL Listed for code-compliant installations
Specifications
| Brand | GE |
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Questions about this item
Which load-center series accepts the THQB bolt-on mounting style?
The THQB series is designed for GE load centers and lighting panels that use a bolt-on frame; verify your panel lists THQB compatibility before installing.
Can the 40 A single-pole breaker share a panel with existing 100 A frame breakers?
Yes, the 100 A frame size allows the 40 A single-pole unit to mount in the same panel as other THQB breakers up to the panel’s bus rating.
How do I confirm the breaker trips at its 10 kA interrupting rating after wiring?
After torquing the lug terminals to spec, switch the toggle to ON; the handle should stay latched until an over-current event forces it to the tripped center position.
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