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SIEMENS Miniature Circuit Breaker: 45 A Amps, 277V AC, 1 Poles - BQD Series, Bolt-On Siemens Miniature Circuit Breakers
SIEMENSBQD Series, Bolt-On Siemens Miniature Circuit Breakers

SIEMENS Miniature Circuit Breaker: 45 A Amps, 277V AC, 1 Poles

The Siemens BQD Series Miniature Circuit Breaker (MPN BQD145) is a 45 A, 277V AC, single-pole, bolt-on breaker with a 14kA interrupting capacity at 277V AC. Designed for use in Siemens P1 Panelboards, this Std-type…

SKU 3G-OTH-725657

Brand
SIEMENS
Item
Miniature Circuit Breaker: 45 A Amps, 277V AC, 1 Poles
Category
BQD Series, Bolt-On Siemens Miniature Circuit Breakers
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Technical Specifications

SIEMENS
Manufacturer Part Number
BQD145
Type
Std
AC
277V
Poles
1
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SIEMENS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens BQD Series Miniature Circuit Breaker (MPN BQD145) is a 45 A, 277V AC, single-pole, bolt-on breaker with a 14kA interrupting capacity at 277V AC. Designed for use in Siemens P1 Panelboards, this Std-type unit provides overcurrent protection in a compact 1-pole form factor.

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 BQD145 miniature circuit breaker used for?

The Siemens BQD145 is a 45 A, single-pole, bolt-on miniature circuit breaker for overcurrent protection in Siemens P1 Panelboards. It is commonly used in commercial and industrial electrical distribution systems where reliable branch-circuit protection is required at 277V AC.

What are the specifications of the Siemens BQD145 circuit breaker?

The Siemens BQD145 is rated 45 A at 277V AC, single-pole, with a 14kA interrupting capacity at 277V AC. It is a bolt-on type (BQD Series) designed for Siemens P1 Panelboards. The manufacturer part number is BQD145.

Where to buy the Siemens BQD145 circuit breaker worldwide?

3G Electric supplies the Siemens BQD145 miniature circuit breaker to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this Siemens BQD Series breaker.

How to install a Siemens BQD145 bolt-on circuit breaker?

Install the Siemens BQD145 by ensuring the panelboard is de-energized, then align the breaker's bolt-on tabs with the bus bar in a Siemens P1 Panelboard. Tighten the mounting screw to the manufacturer's torque specification. Always follow local electrical codes and use appropriate 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 bqd 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: 45 A Amps, 480V AC, 2 Poles, Std (MPN BQD245). Key specifications — attr196014: 45 A; attr196015: 480V AC; attr196017: 14kA at 480V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.
Miniature Circuit Breaker: 80 A Amps, 480V AC, 2 Poles, Std (MPN BQD280). Key specifications — attr196014: 80 A; attr196015: 480V AC; attr196017: 14kA at 480V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.
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Miniature Circuit Breaker: 80 A Amps, 277V AC, 1 Poles, Std (MPN BQD180). Key specifications — attr196014: 80 A; attr196015: 277V AC; attr196017: 14kA at 277V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.
Miniature Circuit Breaker: 30 A Amps, 480V AC, 2 Poles, Std (MPN BQD230). Key specifications — attr196014: 30 A; attr196015: 480V AC; attr196017: 14kA at 480V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.
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