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Siemens B235 two-pole bolt-on breaker, toggle actuator, grey plastic body

SIEMENS

SIEMENS B235 BL Series 35 A 2 Pole 120/240 V AC Circuit Breaker

SKU CH-QB96-JMNY5

Two-pole miniature breaker rated 35 A at 120/240 V AC with 10 kA interrupting capacity for Siemens P1 panelboards

  • Reliable overload protection backed by 10 kA interrupting rating
  • Fits Siemens P1 panels with bolt-on mounting style
  • Handles 35 A loads on 120/240 V AC circuits
  • Two-pole design safeguards both legs of single-phase supply
  • Accepts 14 AWG copper or 12 AWG aluminium conductors

BL Series 35 A 2-Pole Breaker

The Siemens B235 is a BL Series miniature circuit breaker rated at 35 A and 120/240 V AC. It uses a bolt-on mounting style with a toggle actuator and a standard lug terminal. The device provides a maximum AIR rating of 10 kA at the rated voltage. It is designed for use with Siemens P1 panelboards and load centers.

Suitable Applications and Limits

This breaker suits single-phase circuits requiring 35 A overcurrent protection in compatible P1 panels. It is not for DC circuits, as it carries no DC voltage rating. It will not fit panels outside the P1 series or applications needing a higher interrupting rating than 10 kA. Installers needing a different pole count or amperage must select another model.

Key Selection Specification

The critical specification is the 10 kA AIR rating at 120/240 V AC, which must meet or exceed the available fault current at the installation point. The bolt-on mounting and P1 series compatibility are also mandatory for correct fit. Verify the panelboard series and fault current level before purchase.

How it compares

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Price $86.99
Pricier than about 65% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameSIEMENS

Questions about this item

Which panelboard series must I already have installed for this BL-series 35 A breaker to bolt on?

It is designed for Siemens P1 panelboards and load-center series P1.

Will this 2-pole 120/240 V AC breaker coordinate with older 10 kA-rated Siemens breakers already in the panel?

Yes, its maximum AIR rating is 10 kA at 120/240 V AC, matching that interrupting level.

How can I confirm the breaker is seated and functioning after bolting it onto the bus?

Move the toggle actuator to ON; the handle should stay firmly latched and the circuit should carry load without tripping.

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