Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
SIEMENS Miniature Circuit Breaker: 90 A Amps, 480V AC, 3 Poles - BQD Series, Bolt-On Siemens Miniature Circuit Breakers
SIEMENSBQD Series, Bolt-On Siemens Miniature Circuit Breakers

SIEMENS Miniature Circuit Breaker: 90 A Amps, 480V AC, 3 Poles

The Siemens BQD Series Miniature Circuit Breaker (MPN BQD390) is a 90 A, 480V AC, 3-pole bolt-on unit with a 14kA interrupting rating at 480V AC, designed for use in Siemens P1 Panelboards. 3G Electric interprets…

SKU 3G-OTH-725656

Brand
SIEMENS
Item
Miniature Circuit Breaker: 90 A Amps, 480V AC, 3 Poles
Category
BQD Series, Bolt-On Siemens Miniature Circuit Breakers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

SIEMENS
Manufacturer Part Number
BQD390
Type
Std
AC
480V
Poles
3
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

SIEMENS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens BQD Series Miniature Circuit Breaker (MPN BQD390) is a 90 A, 480V AC, 3-pole bolt-on unit with a 14kA interrupting rating at 480V AC, designed for use in Siemens P1 Panelboards. 3G Electric interprets your demand for this OEM-specified component, sources it through our global supply network, and supports your procurement with specialist expertise across 14 industrial departments.

Frequently Asked Questions

What is the Siemens BQD390 miniature circuit breaker used for?

The Siemens BQD390 is a 90 A, 480V AC, 3-pole bolt-on miniature circuit breaker designed 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.

What are the specifications of the Siemens BQD390 circuit breaker?

The Siemens BQD390 is rated 90 A at 480V AC, 3-pole, with a 14kA interrupting capacity at 480V AC. It is a bolt-on type, standard (Std) model, part of the BQD series, and is intended for use in Siemens P1 panelboards.

Where to buy the Siemens BQD390 circuit breaker worldwide?

3G Electric supplies the Siemens BQD390 miniature circuit breaker to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial sourcing partner, we interpret your demand and provide this OEM-specified component through our supply network.

How to select the correct Siemens BQD circuit breaker for a panelboard?

To select the correct Siemens BQD breaker, verify the voltage (480V AC), current rating (90 A), number of poles (3), and interrupting capacity (14kA). Ensure compatibility with your Siemens P1 panelboard. For application-specific guidance, consult the panelboard manual or contact 3G Electric for technical support.

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from SIEMENS

View all SIEMENS parts →
Miniature Circuit Breaker: 35 A Amps, 480V AC, 2 Poles, Std (MPN BQD235). Key specifications — attr196014: 35 A; attr196015: 480V AC; attr196017: 14kA at 480V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.
SIEMENS
Miniature Circuit Breaker: 35 A Amps, 480V AC, 2 Poles, Std (MPN BQD235). Key specifications — attr196014: 35 A; attr196015: 480V AC; attr196017: 14kA at 480V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.
Miniature Circuit Breaker: 50 A Amps, 480V AC, 2 Poles, Std (MPN BQD250). Key specifications — attr196014: 50 A; attr196015: 480V AC; attr196017: 14kA at 480V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.
SIEMENS
Miniature Circuit Breaker: 50 A Amps, 480V AC, 2 Poles, Std (MPN BQD250). Key specifications — attr196014: 50 A; attr196015: 480V AC; attr196017: 14kA at 480V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.
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.
SIEMENS
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.
SIEMENS
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.
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.
SIEMENS
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.
SIEMENS
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.
Miniature Circuit Breaker: 15 A Amps, 480V AC, 2 Poles, Std (MPN BQD215). Key specifications — attr196014: 15 A; attr196015: 480V AC; attr196017: 14kA at 480V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.
SIEMENS
Miniature Circuit Breaker: 15 A Amps, 480V AC, 2 Poles, Std (MPN BQD215). Key specifications — attr196014: 15 A; attr196015: 480V AC; attr196017: 14kA at 480V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.
Miniature Circuit Breaker: 15 A Amps, 277V AC, 1 Poles, Std (MPN BQD115). Key specifications — attr196014: 15 A; attr196015: 277V AC; attr196017: 14kA at 277V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.
SIEMENS
Miniature Circuit Breaker: 15 A Amps, 277V AC, 1 Poles, Std (MPN BQD115). Key specifications — attr196014: 15 A; attr196015: 277V AC; attr196017: 14kA at 277V AC; attr196018: Siemens P1 Panelboards; attr196016: Single; attr232503: BQD.