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SIEMENS BQD120 Miniature Circuit Breaker, 20A, 277V AC, 1-Pole, Std - BQD Series, Bolt-On Siemens Miniature Circuit Breakers
SIEMENSBQD Series, Bolt-On Siemens Miniature Circuit Breakers

SIEMENS BQD120 Miniature Circuit Breaker, 20A, 277V AC, 1-Pole, Std

The Siemens BQD Series Miniature Circuit Breaker (MPN BQD120) is a 20 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-725629

Also listed as: BQD 120 · BQD-120

Brand
SIEMENS
Item
BQD120 Miniature Circuit Breaker, 20A, 277V AC, 1-Pole, Std
Part Number
BQD120
Category
BQD Series, Bolt-On Siemens Miniature Circuit Breakers
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Technical Specifications

SIEMENS
Manufacturer Part Number
BQD120
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 BQD120) is a 20 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 format.

Frequently Asked Questions

What is the Siemens BQD120 miniature circuit breaker used for?

The Siemens BQD120 is a 20 A, 277V AC single-pole bolt-on circuit breaker used for overcurrent protection in Siemens P1 Panelboards. It is common in commercial and industrial electrical distribution systems where reliable branch circuit protection is required.

What are the specifications of the Siemens BQD120 circuit breaker?

The Siemens BQD120 is a 20 A, 277V AC, single-pole bolt-on miniature circuit breaker with a 14kA interrupting capacity at 277V AC. It is part of the BQD Series and designed for use in Siemens P1 Panelboards. The unit is a Std type breaker.

Where to buy the Siemens BQD120 circuit breaker worldwide?

3G Electric supplies the Siemens BQD120 miniature circuit breaker to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this genuine Siemens BQD Series breaker.

How to install the Siemens BQD120 circuit breaker?

Install the Siemens BQD120 by ensuring the panelboard is de-energized, then bolt the breaker onto the bus bar in a Siemens P1 Panelboard. Torque terminals to manufacturer specifications and verify the 20 A rating matches the circuit load. Always follow 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
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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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