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SIEMENS Miniature Circuit Breaker: 45 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: 45 A Amps, 120V AC, 1 Poles

The Siemens BQ1B045 is a BQ Series miniature circuit breaker rated 45 A, 120V AC, single-pole, with a 10kA interrupting capacity at 120V AC. Designed for use in Siemens panelboards, this bolt-on breaker provides…

SKU 3G-OTH-623737

Brand
SIEMENS
Item
Miniature Circuit Breaker: 45 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
BQ1B045
Type
Std
AC
120V
Poles
1
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SIEMENS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens BQ1B045 is a BQ Series miniature circuit breaker rated 45 A, 120V AC, single-pole, with a 10kA interrupting capacity at 120V AC. Designed for use in Siemens panelboards, this bolt-on breaker provides overcurrent protection in a compact, standard form factor.

Frequently Asked Questions

What is the Siemens BQ1B045 miniature circuit breaker used for?

The Siemens BQ1B045 provides overcurrent protection in Siemens panelboards. It is a bolt-on, single-pole breaker rated 45 A at 120V AC, commonly used in commercial and industrial electrical distribution systems to protect branch circuits.

What are the specifications of the Siemens BQ1B045?

The Siemens BQ1B045 is a BQ Series miniature circuit breaker rated 45 A, 120V AC, single-pole, with a 10kA interrupting capacity at 120V AC. It is a bolt-on type designed for use in Siemens panelboards.

Where to buy the Siemens BQ1B045 worldwide?

3G Electric supplies the Siemens BQ1B045 miniature circuit breaker to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive genuine Siemens BQ Series breakers for your panelboard applications.

How to install a Siemens BQ1B045 bolt-on breaker?

Install the Siemens BQ1B045 by ensuring the panelboard is de-energized, then align the breaker's bolt-on tabs with the bus bar and tighten the mounting screw to the specified torque. Always follow Siemens installation instructions and local electrical codes.

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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