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SIEMENS BQD190 Miniature Circuit Breaker, 90A, 277V AC, 1-Pole, Bolt-On - BQD Series, Bolt-On Siemens Miniature Circuit Breakers
SIEMENSBQD Series, Bolt-On Siemens Miniature Circuit Breakers

SIEMENS BQD190 Miniature Circuit Breaker, 90A, 277V AC, 1-Pole, Bolt-On

The Siemens BQD Series Miniature Circuit Breaker (MPN BQD190) is a 90 A, 277V AC, single-pole, bolt-on breaker with a 14kA interrupting rating at 277V AC. Designed for use in Siemens P1 Panelboards, this Std-type…

SKU 3G-OTH-725660

Also listed as: BQD 190 · BQD-190

Brand
SIEMENS
Item
BQD190 Miniature Circuit Breaker, 90A, 277V AC, 1-Pole, Bolt-On
Category
BQD Series, Bolt-On Siemens Miniature Circuit Breakers
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Technical Specifications

SIEMENS
Manufacturer Part Number
BQD190
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 BQD190) is a 90 A, 277V AC, single-pole, bolt-on breaker with a 14kA interrupting rating at 277V AC. Designed for use in Siemens P1 Panelboards, this Std-type unit provides overcurrent protection in a compact 1-pole form factor.

Frequently Asked Questions

What is the Siemens BQD190 miniature circuit breaker used for?

The Siemens BQD190 provides overcurrent protection in Siemens P1 Panelboards. It is a 90 A, single-pole, bolt-on breaker rated at 277V AC with a 14kA interrupting capacity, suitable for commercial and industrial branch circuits.

What are the specifications of the Siemens BQD190 circuit breaker?

The Siemens BQD190 is a 90 A, 277V AC, single-pole miniature circuit breaker with a 14kA interrupting rating at 277V AC. It is a bolt-on type (BQD Series) designed for use in Siemens P1 Panelboards.

Where to buy the Siemens BQD190 circuit breaker worldwide?

3G Electric supplies the Siemens BQD190 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 part.

How to install the Siemens BQD190 bolt-on circuit breaker?

The Siemens BQD190 is a bolt-on breaker designed for Siemens P1 Panelboards. Ensure the panel is de-energized, then align the breaker with the bus stabs and tighten the mounting bolt to the specified torque. Follow Siemens installation instructions for safe operation.

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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