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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 BQH Series BQ2B040H is a 2-pole, 40 A miniature circuit breaker with a high interrupting capacity of 22kA at 120/240V AC. Designed for bolt-on installation in Siemens panelboards, this single-phase…

SKU 3G-OTH-623698

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
BQ2B040H
Type
High Interrupting Capacity
AC
120/240V
Poles
2
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SIEMENS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens BQH Series BQ2B040H is a 2-pole, 40 A miniature circuit breaker with a high interrupting capacity of 22kA at 120/240V AC. Designed for bolt-on installation in Siemens panelboards, this single-phase breaker provides overcurrent protection for branch circuits in industrial electrical distribution systems.

Frequently Asked Questions

What is the Siemens BQ2B040H miniature circuit breaker used for?

The Siemens BQ2B040H is a 2-pole, 40 A miniature circuit breaker designed for overcurrent protection in industrial branch circuits. It installs in Siemens panelboards and handles 120/240V AC systems with a high interrupting capacity of 22kA, making it suitable for heavy-duty electrical distribution.

What are the specifications of the Siemens BQ2B040H?

The Siemens BQ2B040H is a 40 A, 2-pole miniature circuit breaker rated for 120/240V AC. It offers a high interrupting capacity of 22kA at 120/240V AC, is single-phase, and uses a bolt-on connection for Siemens panelboards. The series is BQH, with MPN BQ2B040H.

Where to buy the Siemens BQ2B040H worldwide?

3G Electric supplies the Siemens BQ2B040H miniature circuit breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to order this 40 A, 2-pole breaker for your Siemens panelboard.

How to install the Siemens BQ2B040H circuit breaker?

Install the Siemens BQ2B040H by turning off power, then bolting it into a compatible Siemens panelboard. Ensure the 40 A, 2-pole breaker is seated firmly on the bus bar. Follow standard electrical safety practices and local codes. For specific guidance, consult the Siemens installation manual.

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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