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Grey GE miniature circuit breaker, two toggle poles, bolt-on mount, 3.5 by 1 by 3.3 inches

GE

GE THQB2145 Miniature Circuit Breaker 45A 2 Pole 120/240V AC

SKU CH-PSAC-1SVYY

A 45 A, two-pole miniature breaker rated 120/240 V AC with a 10 kA interrupting capacity for bolt-on load-centre mounting

  • 45 A rating protects 120/240 V AC circuits
  • 10 kA interrupting capacity clears faults safely
  • Bolt-on mounting fits THQB load centres
  • UL listed for code-compliant installations
  • Accepts 8–3 AWG conductors for flexible wiring

GE THQB2145 Circuit Breaker 45A

The GE THQB2145 is a 45 A miniature circuit breaker rated for 120/240 V AC. It belongs to the THQB series and uses a bolt-on mounting style with a toggle actuator. The unit is UL listed and offers a 10 kA interrupting rating at 120/240 V AC. It fits load centres and lighting panels with a 100 A frame size.

Suitable uses and limitations

This two-pole breaker protects single-phase branch circuits requiring 45 A overcurrent protection. It accepts wire sizes from 8 AWG to 3 AWG using lug terminals. It is not rated for DC applications, so buyers needing DC circuit protection must look elsewhere. The bolt-on design requires a compatible panel bus, so it will not suit plug-on or DIN-rail enclosures.

Deciding specification: 45 A rating

The 45 A current rating is the primary factor that determines whether this breaker matches the circuit design. Select it only when the load calculation and conductor ampacity call for exactly 45 A of overcurrent protection. Using a different amperage would violate code requirements and compromise safety. Verify the panel schedule before purchasing.

How it compares

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

Price $82.99
Pricier than about 64% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameGE

Questions about this item

Should I pick the 45 A two-pole version or a different THQB rating for my panel?

Choose the 45 A two-pole model when the branch circuit requires 45 A at 120/240 V AC and the panel accepts THQB bolt-on breakers; other THQB ratings carry different ampere markings.

What does the 10 kA AIR rating mean once the breaker is installed?

It means the breaker can safely interrupt up to 10 kA of fault current at 120/240 V AC, so it is suitable for panels where the available short-circuit current does not exceed that level.

How does the bolt-on mounting and lug terminal limit wire choices?

The bolt-on mount fits GE THQB-compatible load centres, and the lug terminals accept copper conductors from 8 AWG up to 3 AWG.

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