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Compact grey Siemens BQ1B025 miniature circuit breaker with single toggle switch and bolt-on mounting tabs

SIEMENS

SIEMENS BQ1B025 Miniature Circuit Breaker 25A 1 Pole 120V AC

SKU CH-63JZ-2NMZ8

Miniature circuit breaker rated 25 A, 120 V AC, single-pole, bolt-on mounting for Siemens panelboards

  • 25 A rating protects 120 V single-phase circuits
  • 10 kA interrupting capacity clears faults safely
  • Bolt-on mounting fits Siemens BQ panelboards
  • Lug terminals accept 14–6 AWG copper conductors
  • CSA certified and UL listed for code compliance

Product Identity

The SIEMENS BQ1B025 is a miniature circuit breaker rated at 25 amps and 120 volts AC. It uses a single-pole bolt-on design from the BQ series for standard panelboard protection.

Installation Checks

Verify that your panelboard accepts BQ-series bolt-on breakers and has an available single-pole space. Confirm the supply voltage is 120V AC and that conductors fall between 14 AWG copper and 6 AWG.

Suitability

This breaker suits residential or light-commercial panels requiring 25-amp single-pole protection at 120V AC. It does not suit DC circuits, multi-pole applications or panels that reject bolt-on BQ frames.

How it compares

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

Price $59.99
Typical for this category: the median of 1,135 items is $54.99.

Specifications

Product
Brand nameSIEMENS

Questions about this item

Does the breaker come with lugs or do I need to buy terminals separately?

The breaker uses a terminal connection lug and accepts copper wire from 14 AWG up to 6 AWG or aluminium wire from 12 AWG up to 6 AWG.

I only see one model listed — how do I pick the right amperage for my circuit?

This unit is rated at 25 A, 120 V AC, single pole; choose it when the circuit requires exactly that current and voltage.

What does the 10 kA interrupting rating mean when the breaker is installed in a panel?

It means the breaker can safely interrupt up to 10 kA of fault current at 120 V AC in a compatible Siemens panelboard.

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