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SIEMENS Miniature Circuit Breaker: 40 A Amps, 120/240V AC, 2 Poles - BQ & BQH Series, Bolt-On Siemens Miniature Circuit Breakers
SIEMENSBQ & BQH Series, Bolt-On Siemens Miniature Circuit Breakers

SIEMENS Miniature Circuit Breaker: 40 A Amps, 120/240V AC, 2 Poles

The Siemens BQ2B040 is a BQ Series miniature circuit breaker, bolt-on type, rated 40 A at 120/240V AC with 2 poles and a 10kA interrupting capacity at 120/240V AC. Designed for use in Siemens panelboards, this Std…

SKU 3G-OTH-623697

Brand
SIEMENS
Item
Miniature Circuit Breaker: 40 A Amps, 120/240V AC, 2 Poles
Category
BQ & BQH Series, Bolt-On Siemens Miniature Circuit Breakers
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Technical Specifications

SIEMENS
Manufacturer Part Number
BQ2B040
Type
Std
AC
120/240V
Poles
2
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SIEMENS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens BQ2B040 is a BQ Series miniature circuit breaker, bolt-on type, rated 40 A at 120/240V AC with 2 poles and a 10kA interrupting capacity at 120/240V AC. Designed for use in Siemens panelboards, this Std type breaker features single-pole construction and is part of the BQ & BQH Series.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Siemens BQ2B040 miniature circuit breaker used for?

The Siemens BQ2B040 is a bolt-on miniature circuit breaker rated 40 A at 120/240V AC with 2 poles and a 10kA interrupting capacity. It protects branch circuits in Siemens panelboards across industrial and commercial electrical distribution systems, tripping during overloads or short circuits.

What are the specifications of the Siemens BQ2B040?

The Siemens BQ2B040 is a BQ Series miniature circuit breaker with 40 A rating, 120/240V AC voltage, 2 poles, and a 10kA interrupting capacity at 120/240V AC. It is a bolt-on, Std type breaker designed for use in Siemens panelboards, with single-pole construction.

Where to buy the Siemens BQ2B040 worldwide?

3G Electric supplies the Siemens BQ2B040 miniature circuit breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this BQ Series breaker.

How to install the Siemens BQ2B040 circuit breaker?

Install the Siemens BQ2B040 by turning off main power, then bolting the breaker into a compatible Siemens panelboard bus. Ensure the 40 A rating matches the circuit load and wire gauge. Follow standard electrical safety practices and local codes for bolt-on breaker installation.

Used in

Common applications for SIEMENS
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

SIEMENS Products

3G Electric supplies SIEMENS bq & bqh series, bolt-on siemens miniature circuit breakers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Miniature Circuit Breaker: 70 A Amps, 240V AC, 3 Poles, High Interrupting Capacity (MPN BQ3B070H). Key specifications — attr196014: 70 A; attr196015: 240V AC; attr196017: 22kA at 240V AC; attr196018: Siemens Panelboards; attr196016: Three; attr232503: BQH.
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