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GE THQB1125 miniature circuit breaker, single-pole toggle, bolt-on mount, grey plastic housing

GE

GE THQB1125 Miniature Circuit Breaker 25A 1 Pole 120/240V AC

SKU CH-C5Z9-86ER2

Single-pole 25 A breaker rated 120/240 V AC with 10 kA interrupting capacity and bolt-on mounting for load centres

  • 25 A rating protects 120/240 V AC circuits
  • 10 kA interrupting capacity handles fault currents
  • Bolt-on mounting fits compatible load centres
  • Single-pole design suits lighting panel applications
  • Screw-clamp terminals accept 14–8 MCM conductors

What this breaker does

The GE THQB1125 is a 25 A single-pole miniature circuit breaker rated for 120/240 V AC. It uses a bolt-on mounting style and a toggle actuator, with a 10 kA interrupting rating at the rated voltage. Screw-clamp terminals accept aluminium wire from 12 MCM and copper wire from 14 MCM up to 8 MCM.

Who should use it and who should not

Electricians fitting standard lighting panels or load centres that accept the THQB series will find this breaker compatible. It is not DC rated, so it cannot be used on DC circuits. Buyers needing multi-pole protection or a higher interrupting capacity should look elsewhere.

Installation notes

The bolt-on design secures directly to the panel bus, and the screw-clamp terminals make wire connections straightforward. Ensure the panel accepts the 100 A frame size and that wire gauges fall within the 14 to 8 MCM copper or 12 to 8 MCM aluminium range. The breaker measures 3.5 in long, 1 in wide and 3.3 in deep for space planning.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $36.99
Cheaper than about 65% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameGE

Questions about this item

Does this breaker need a GE THQB-series load center with bolt-on mounting to install?

Yes, the THQB1125 is a bolt-on type designed for GE lighting panels and load centres that accept the THQB frame.

Can the 25 A single-pole breaker share a 120/240 V panel with existing multi-pole breakers?

It occupies one pole in a single-phase panel rated for 120/240 V AC, so it fits alongside other breakers in the same load centre.

How do I confirm the breaker is seated and protecting the circuit after wiring?

Snap the toggle to the ON position; the handle stays latched and the connected circuit energises, showing the breaker is engaged.

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