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SIEMENS Miniature Circuit Breaker: 70 A Amps, 240V AC, 3 Poles - BQ & BQH Series, Bolt-On Siemens Miniature Circuit Breakers
SIEMENSBQ & BQH Series, Bolt-On Siemens Miniature Circuit Breakers

SIEMENS Miniature Circuit Breaker: 70 A Amps, 240V AC, 3 Poles

The Siemens BQ3B070 is a BQ Series miniature circuit breaker, bolt-on type, rated 70 A at 240V AC with three poles and a 10kA interrupting capacity at 240V AC. Designed for use in Siemens panelboards, this Std-type…

SKU 3G-OTH-623725

Brand
SIEMENS
Item
Miniature Circuit Breaker: 70 A Amps, 240V AC, 3 Poles
Category
BQ & BQH Series, Bolt-On Siemens Miniature Circuit Breakers
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Technical Specifications

SIEMENS
Manufacturer Part Number
BQ3B070
Type
Std
AC
240V
Poles
3
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SIEMENS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens BQ3B070 is a BQ Series miniature circuit breaker, bolt-on type, rated 70 A at 240V AC with three poles and a 10kA interrupting capacity at 240V AC. Designed for use in Siemens panelboards, this Std-type breaker provides overcurrent protection in a compact, bolt-on format.

Frequently Asked Questions

What is the Siemens BQ3B070 miniature circuit breaker used for?

The Siemens BQ3B070 is a BQ Series bolt-on miniature circuit breaker rated 70 A at 240V AC. It provides overcurrent protection in Siemens panelboards for commercial and industrial electrical distribution systems, safeguarding branch circuits against overloads and short circuits.

What are the specifications of the Siemens BQ3B070?

The Siemens BQ3B070 is a 70 A, 240V AC, three-pole miniature circuit breaker with a 10kA interrupting capacity at 240V AC. It is a Std-type, bolt-on unit designed for use in Siemens panelboards, with MPN BQ3B070.

Where to buy the Siemens BQ3B070 worldwide?

3G Electric supplies the Siemens BQ3B070 miniature circuit breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to install the Siemens BQ3B070 in a panelboard?

The Siemens BQ3B070 is a bolt-on breaker that mounts directly to the bus bars in compatible Siemens panelboards. Ensure power is off, align the breaker with the mounting slots, and tighten the bolt securely. 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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Miniature Circuit Breaker: 70 A Amps, 120/240V AC, 2 Poles, Std (MPN BQ2B070). Key specifications — attr196014: 70 A; attr196015: 120/240V AC; attr196017: 10kA at 120/240V AC; attr196018: Siemens Panelboards; attr196016: Single; attr232503: BQ.
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Miniature Circuit Breaker: 70 A Amps, 120/240V AC, 2 Poles, Std (MPN BQ2B070). Key specifications — attr196014: 70 A; attr196015: 120/240V AC; attr196017: 10kA at 120/240V AC; attr196018: Siemens Panelboards; attr196016: Single; attr232503: BQ.
Miniature Circuit Breaker: 100 A Amps, 240V AC, 3 Poles, Std (MPN BQ3B100). Key specifications — attr196014: 100 A; attr196015: 240V AC; attr196017: 10kA at 240V AC; attr196018: Siemens Panelboards; attr196016: Three; attr232503: BQ.
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Miniature Circuit Breaker: 100 A Amps, 240V AC, 3 Poles, Std (MPN BQ3B100). Key specifications — attr196014: 100 A; attr196015: 240V AC; attr196017: 10kA at 240V AC; attr196018: Siemens Panelboards; attr196016: Three; attr232503: BQ.
Miniature Circuit Breaker: 80 A Amps, 120/240V AC, 2 Poles, Std (MPN BQ2B080). Key specifications — attr196014: 80 A; attr196015: 120/240V AC; attr196017: 10kA at 120/240V AC; attr196018: Siemens Panelboards; attr196016: Single; attr232503: BQ.
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Miniature Circuit Breaker: 80 A Amps, 120/240V AC, 2 Poles, Std (MPN BQ2B080). Key specifications — attr196014: 80 A; attr196015: 120/240V AC; attr196017: 10kA at 120/240V AC; attr196018: Siemens Panelboards; attr196016: Single; attr232503: BQ.
Miniature Circuit Breaker: 25 A Amps, 240V AC, 3 Poles, High Interrupting Capacity (MPN BQ3B025H). Key specifications — attr196014: 25 A; attr196015: 240V AC; attr196017: 22kA at 240V AC; attr196018: Siemens Panelboards; attr196016: Three; attr232503: BQH.
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Miniature Circuit Breaker: 25 A Amps, 240V AC, 3 Poles, High Interrupting Capacity (MPN BQ3B025H). Key specifications — attr196014: 25 A; attr196015: 240V AC; attr196017: 22kA at 240V AC; attr196018: Siemens Panelboards; attr196016: Three; attr232503: BQH.
Miniature Circuit Breaker: 70 A Amps, 240V AC, 3 Poles, High Interrupting Capacity (MPN BQ3B070H). Key specifications — attr196014: 70 A; attr196015: 240V AC; attr196017: 22kA at 240V AC; attr196018: Siemens Panelboards; attr196016: Three; attr232503: BQH.
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Miniature Circuit Breaker: 70 A Amps, 240V AC, 3 Poles, High Interrupting Capacity (MPN BQ3B070H). Key specifications — attr196014: 70 A; attr196015: 240V AC; attr196017: 22kA at 240V AC; attr196018: Siemens Panelboards; attr196016: Three; attr232503: BQH.
Miniature Circuit Breaker: 55 A Amps, 120V AC, 1 Poles, Std (MPN BQ1B055). Key specifications — attr196014: 55 A; attr196015: 120V AC; attr196017: 10kA at 120V AC; attr196018: Siemens Panelboards; attr196016: Single; attr232503: BQ.
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Miniature Circuit Breaker: 55 A Amps, 120V AC, 1 Poles, Std (MPN BQ1B055). Key specifications — attr196014: 55 A; attr196015: 120V AC; attr196017: 10kA at 120V AC; attr196018: Siemens Panelboards; attr196016: Single; attr232503: BQ.
Miniature Circuit Breaker: 20 A Amps, 120V AC, 1 Poles, Std (MPN BQ1B020). Key specifications — attr196014: 20 A; attr196015: 120V AC; attr196017: 10kA at 120V AC; attr196018: Siemens Panelboards; attr196016: Single; attr232503: BQ.
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Miniature Circuit Breaker: 20 A Amps, 120V AC, 1 Poles, Std (MPN BQ1B020). Key specifications — attr196014: 20 A; attr196015: 120V AC; attr196017: 10kA at 120V AC; attr196018: Siemens Panelboards; attr196016: Single; attr232503: BQ.
Miniature Circuit Breaker: 15 A Amps, 240V AC, 2 Poles, Std (MPN BQ2H015). Key specifications — attr196014: 15 A; attr196015: 240V AC; attr196017: 10kA at 240V AC; attr196018: Siemens Panelboards; attr196016: Single; attr232503: BQH.
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Miniature Circuit Breaker: 15 A Amps, 240V AC, 2 Poles, Std (MPN BQ2H015). Key specifications — attr196014: 15 A; attr196015: 240V AC; attr196017: 10kA at 240V AC; attr196018: Siemens Panelboards; attr196016: Single; attr232503: BQH.