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SIEMENS Miniature Circuit Breaker: 40 A Amps, 120V AC, 1 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, 120V AC, 1 Poles

The Siemens BQH Series BQ1B040H is a 40 A, 1-pole, high-interrupting-capacity miniature circuit breaker rated for 120V AC with a 22kA interrupting capacity at 120V AC. Designed for bolt-on installation in Siemens…

SKU 3G-OTH-623745

Brand
SIEMENS
Item
Miniature Circuit Breaker: 40 A Amps, 120V AC, 1 Poles
Category
BQ & BQH Series, Bolt-On Siemens Miniature Circuit Breakers
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Technical Specifications

SIEMENS
Manufacturer Part Number
BQ1B040H
Type
High Interrupting Capacity
AC
120V
Poles
1
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SIEMENS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens BQH Series BQ1B040H is a 40 A, 1-pole, high-interrupting-capacity miniature circuit breaker rated for 120V AC with a 22kA interrupting capacity at 120V AC. Designed for bolt-on installation in Siemens panelboards, this single-pole breaker provides overcurrent protection in electrical distribution systems.

Frequently Asked Questions

What is the Siemens BQ1B040H miniature circuit breaker used for?

The Siemens BQ1B040H is a 40 A, 1-pole miniature circuit breaker used for overcurrent protection in Siemens panelboards. It is designed for bolt-on installation in commercial and industrial electrical distribution systems, providing reliable circuit interruption at 120V AC with a 22kA interrupting capacity.

What are the specifications of the Siemens BQ1B040H?

The Siemens BQ1B040H is a 40 A, 1-pole, high-interrupting-capacity miniature circuit breaker rated for 120V AC. It has a 22kA interrupting capacity at 120V AC and is designed for bolt-on installation in Siemens panelboards. The part number is BQ1B040H and it belongs to the BQH series.

Where to buy the Siemens BQ1B040H worldwide?

3G Electric supplies the Siemens BQ1B040H 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, 1-pole, high-interrupting-capacity breaker for your Siemens panelboard.

How to install the Siemens BQ1B040H circuit breaker?

Install the Siemens BQ1B040H by turning off the main power, then bolting the breaker into the designated slot in a Siemens panelboard. Ensure the 40 A rating matches the circuit load and that the 120V AC supply is off. Follow all local electrical codes and use proper personal protective equipment.

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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