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SIEMENS B140 Miniature Circuit Breaker, 40A, 1-Pole, 120/240V AC, BL Series - B Series, Bolt-On Siemens Miniature Circuit Breakers
SIEMENSB Series, Bolt-On Siemens Miniature Circuit Breakers

SIEMENS B140 Miniature Circuit Breaker, 40A, 1-Pole, 120/240V AC, BL Series

The Siemens B140 is a 40 A, single-pole miniature circuit breaker from the BL Series, rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for bolt-on installation in Siemens P1…

SKU 3G-OTH-722102

Also listed as: B 140 · B-140

Brand
SIEMENS
Item
B140 Miniature Circuit Breaker, 40A, 1-Pole, 120/240V AC, BL Series
Category
B Series, Bolt-On Siemens Miniature Circuit Breakers
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

SIEMENS
Manufacturer Part Number
B140
Series
BL
Type
Std
AC
120/240V
Amps
40 A
Phase
Single
Poles
1
For Use With
Siemens P1 Panelboards
Max. AIR Rating
10kA at 120/240V AC
AC Voltage Rating
120/240V AC

Technical Documents

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

Product Description

The Siemens B140 is a 40 A, single-pole miniature circuit breaker from the BL Series, rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for bolt-on installation in Siemens P1 Panelboards, this standard-type breaker provides overcurrent protection for single-phase branch circuits.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Siemens B140 miniature circuit breaker used for?

The Siemens B140 provides overcurrent protection for single-phase branch circuits in residential and light commercial applications. It is designed for bolt-on installation in Siemens P1 Panelboards, safeguarding wiring and equipment from overloads and short circuits at 120/240V AC.

What are the specifications of the Siemens B140 circuit breaker?

The Siemens B140 is a 40 A, single-pole miniature circuit breaker rated for 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. It is part of the BL Series, standard type, for use with Siemens P1 Panelboards. 3G Electric supplies this genuine Siemens breaker worldwide.

Where to buy the Siemens B140 circuit breaker worldwide?

3G Electric supplies the genuine Siemens B140 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 40 A, single-pole breaker for Siemens P1 Panelboards.

How to install the Siemens B140 circuit breaker?

The Siemens B140 is a bolt-on type breaker designed for direct installation into Siemens P1 Panelboards. Ensure the panel is de-energized, align the breaker with the bus bar, and tighten the bolt securely. Follow all local electrical codes and the manufacturer's instructions for safe installation.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
The Siemens B2100 is a 100 A, 2-pole miniature circuit breaker from the BL Series, rated for 120/240V AC single-phase service. It features a bolt-on connection and a maximum AIR rating of 10kA at 120/240V AC. This breaker is intended for overcurrent protection in commercial and industrial power distribution systems, specifically for use with Siemens P1 panelboards
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The Siemens B2100 is a 100 A, 2-pole miniature circuit breaker from the BL Series, rated for 120/240V AC single-phase service. It features a bolt-on connection and a maximum AIR rating of 10kA at 120/240V AC. This breaker is intended for overcurrent protection in commercial and industrial power distribution systems, specifically for use with Siemens P1 panelboards
Single-pole miniature circuit breaker rated 40 A at 120/240V AC, part of the BL Series. Provides overcurrent protection for single-phase branch circuits. Designed for bolt-on installation in Siemens P1 panelboards. Maximum AIR rating of 65kA at 120V AC
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Single-pole miniature circuit breaker rated 40 A at 120/240V AC, part of the BL Series. Provides overcurrent protection for single-phase branch circuits. Designed for bolt-on installation in Siemens P1 panelboards. Maximum AIR rating of 65kA at 120V AC
The SIEMENS B270 is a 70 amp, 2-pole miniature circuit breaker from the BL Series, rated for 120/240V AC single-phase service. It features a bolt-on connection and a maximum interrupting rating of 10kA at 120/240V AC. Designed for use with Siemens P1 Panelboards, it provides overcurrent protection in residential and light commercial applications
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The SIEMENS B270 is a 70 amp, 2-pole miniature circuit breaker from the BL Series, rated for 120/240V AC single-phase service. It features a bolt-on connection and a maximum interrupting rating of 10kA at 120/240V AC. Designed for use with Siemens P1 Panelboards, it provides overcurrent protection in residential and light commercial applications
The Siemens B315 is a 15 amp, 240V AC, 3-pole miniature circuit breaker from the BL Series. It is a standard type with a maximum AIR rating of 10kA at 240V AC and is designed for bolt-on use with Siemens P1 Panelboards. This breaker provides overcurrent protection in three-phase electrical distribution systems
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The Siemens B315 is a 15 amp, 240V AC, 3-pole miniature circuit breaker from the BL Series. It is a standard type with a maximum AIR rating of 10kA at 240V AC and is designed for bolt-on use with Siemens P1 Panelboards. This breaker provides overcurrent protection in three-phase electrical distribution systems
SIEMENS IEC Miniature Circuit Breaker: 40 A Amps, 60V DC, 14kA at 240V AC, Screw Clamp, 5SJ4, AC/DC (MPN 5SJ41406HG40)
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SIEMENS IEC Miniature Circuit Breaker: 40 A Amps, 60V DC, 14kA at 240V AC, Screw Clamp, 5SJ4, AC/DC (MPN 5SJ41406HG40)
SIEMENS IEC Miniature Circuit Breaker: 25 A Amps, 60V DC, 14kA at 240V AC, Screw Clamp, 5SJ4, AC/DC (MPN 5SJ41256HG40)
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SIEMENS IEC Miniature Circuit Breaker: 25 A Amps, 60V DC, 14kA at 240V AC, Screw Clamp, 5SJ4, AC/DC (MPN 5SJ41256HG40)

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This Siemens BL Series bolt-on miniature circuit breaker is rated 45 A at 120/240V AC, single-phase, 2-pole, with a shunt trip for remote disconnection. It has a maximum AIR rating of 10kA at 120/240V AC and is designed for use with Siemens P1 panelboards. Suitable for overcurrent protection in commercial and industrial electrical distribution systems
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