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Siemens BQ1B030 single-pole bolt-on breaker with toggle actuator

SIEMENS

SIEMENS BQ1B030 Miniature Circuit Breaker 30A 1 Pole 120V AC

SKU CH-HWS0-HNAXA

Protects 120 V single-phase circuits at 30 A with a 10 kA interrupting rating and bolt-on mounting for Siemens panelboards

  • 30 A protection for 120 V AC single-phase circuits
  • 10 kA interrupting rating clears short-circuit faults safely
  • Bolt-on mounting fits Siemens BQ panelboards directly
  • Lug terminals accept 14–6 AWG copper or 12–6 AWG aluminium
  • UL listed, CSA certified and HACR rated for code compliance

BQ Series 30 A Bolt-On Breaker

The Siemens BQ1B030 is a single-pole miniature circuit breaker rated at 30 amperes and 120 volts AC. It uses a bolt-on mounting style and a toggle actuator for installation in compatible Siemens panelboards. The unit carries a 10 kA interrupting rating at its rated voltage.

Suited for 120 V branch circuits

Electricians protecting 120-volt branch circuits with a 30-ampere requirement will find this breaker matches the specification. It is not suitable for circuits requiring a two-pole device, a different ampere rating, or a voltage other than 120 volts AC.

30 A 120 V AC single-pole rating

The decisive specification is the 30-ampere, 120-volt AC, single-pole rating combined with the bolt-on frame. Verify that the panelboard accepts BQ-series bolt-on breakers and that the circuit demands exactly this voltage and current rating before purchasing.

How it compares

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

Price $65.99
Pricier than about 57% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameSIEMENS

Questions about this item

How much heat or noise does the 30 A BQ breaker produce when it runs continuously all day?

The breaker is a passive device with no moving parts or fan, so it generates no audible noise and only minimal heat from normal current flow.

What existing panel and wiring must I already have for this bolt-on, single-pole unit to install correctly?

It requires a compatible Siemens panelboard, a 120 V AC single-phase supply, and copper wire between 14 AWG and 6 AWG or aluminium wire between 12 AWG and 6 AWG.

Will this 120 V AC, 10 kA breaker coordinate safely with older 125 A frame breakers already in the same panel?

Yes, it shares the 125 A BQ frame size and is UL listed and CSA certified, so it fits alongside legacy BQ breakers in the same Siemens panelboard.

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