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SIEMENS Miniature Circuit Breaker: 40 A Amps, 120/240V AC, 1 Poles - B Series, Bolt-On Siemens Miniature Circuit Breakers
SIEMENSB Series, Bolt-On Siemens Miniature Circuit Breakers

SIEMENS Miniature Circuit Breaker: 40 A Amps, 120/240V AC, 1 Poles

The Siemens B140H is a 40 A, single-pole miniature circuit breaker from the BL Series, rated for 120/240V AC with a maximum AIR rating of 22kA at 120/240V AC. Designed for bolt-on installation in Siemens P1…

SKU 3G-OTH-721867

Brand
SIEMENS
Item
Miniature Circuit Breaker: 40 A Amps, 120/240V AC, 1 Poles
Category
B Series, Bolt-On Siemens Miniature Circuit Breakers
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Technical Specifications

SIEMENS
Manufacturer Part Number
B140H
Series
BL
Type
Std
AC
120/240V
Amps
40 A
Phase
Single
Poles
1
For Use With
Siemens P1 Panelboards
Max. AIR Rating
22kA at 120/240V AC
AC Voltage Rating
120/240V AC

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

Product Description

The Siemens B140H is a 40 A, single-pole miniature circuit breaker from the BL Series, rated for 120/240V AC with a maximum AIR rating of 22kA at 120/240V AC. Designed for bolt-on installation in Siemens P1 panelboards, this standard-trip breaker provides overcurrent protection in single-phase electrical systems.

Frequently Asked Questions

What is the Siemens B140H miniature circuit breaker used for?

The Siemens B140H is a 40 A, single-pole miniature circuit breaker used for overcurrent protection in single-phase electrical systems. It is designed for bolt-on installation in Siemens P1 panelboards, making it suitable for commercial and industrial power distribution applications where reliable circuit interruption is required.

What are the specifications of the Siemens B140H circuit breaker?

The Siemens B140H is rated 40 A at 120/240V AC, single-phase, with 1 pole. It has a maximum AIR rating of 22kA at 120/240V AC and is part of the BL Series. This standard-trip breaker is designed for use with Siemens P1 panelboards and features a bolt-on mounting style.

Where to buy the Siemens B140H circuit breaker worldwide?

3G Electric supplies the Siemens B140H miniature circuit breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this genuine Siemens BL Series breaker for your single-phase panelboard application.

How to install the Siemens B140H circuit breaker?

The Siemens B140H is a bolt-on breaker designed for installation in Siemens P1 panelboards. Ensure the panel is de-energized, then align the breaker with the bus bar and tighten the bolt securely. Follow standard electrical safety practices and consult the panelboard manual for torque specifications and wiring guidelines.

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 b 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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