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SIEMENS Miniature Circuit Breaker: 40 A Amps, 240V AC, 3 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, 240V AC, 3 Poles

The Siemens BQ3B040 is a BQ Series miniature circuit breaker, bolt-on type, rated 40 A at 240V AC with three poles and a 10kA interrupting capacity at 240V AC. Designed for use in Siemens panelboards, this Std model…

SKU 3G-OTH-623700

Brand
SIEMENS
Item
Miniature Circuit Breaker: 40 A Amps, 240V AC, 3 Poles
Category
BQ & BQH Series, Bolt-On Siemens Miniature Circuit Breakers
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Technical Specifications

SIEMENS
Manufacturer Part Number
BQ3B040
Type
Std
AC
240V
Poles
3
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SIEMENS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens BQ3B040 is a BQ Series miniature circuit breaker, bolt-on type, rated 40 A at 240V AC with three poles and a 10kA interrupting capacity at 240V AC. Designed for use in Siemens panelboards, this Std model provides overcurrent protection in a compact, bolt-on format.

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 BQ3B040 miniature circuit breaker used for?

The Siemens BQ3B040 is a BQ Series bolt-on miniature circuit breaker rated 40 A at 240V AC with three poles. It provides overcurrent protection in Siemens panelboards for industrial electrical distribution systems, safeguarding branch circuits against overloads and short circuits.

What are the specifications of the Siemens BQ3B040?

The Siemens BQ3B040 is a 40 A, 240V AC, three-pole miniature circuit breaker with a 10kA interrupting capacity at 240V AC. It is a bolt-on Std model from the BQ Series, designed for use in Siemens panelboards. The manufacturer part number is BQ3B040.

Where to buy the Siemens BQ3B040 worldwide?

3G Electric supplies the Siemens BQ3B040 miniature circuit breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery for this BQ Series bolt-on breaker, ensuring it reaches your facility reliably.

How to install the Siemens BQ3B040 circuit breaker?

Install the Siemens BQ3B040 by mounting it into a compatible Siemens panelboard using the bolt-on connection. Ensure power is off, torque terminals to manufacturer specifications, and verify the 40 A rating matches the circuit load. Follow Siemens installation guidelines for safe overcurrent protection.

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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