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Siemens B24000S01 Molded Case Circuit Breaker

  • 40A
  • 2 Pole
  • Bolt-On
Siemens B24000S01
Molded Case Circuit Breaker
Brand Siemens
SKU B24000S01
Select Item Condition
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  • 40A
  • 2 Pole
  • Bolt-On

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Siemens B24000S01 - 40A 2 Pole Molded Case Circuit Breaker

Siemens B24000S01 - 40A 2 Pole Molded Case Circuit Breaker

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$203.00 In Stock

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Description

Designed for automated control systems, this 40A thermal-magnetic circuit breaker provides standard overcurrent protection alongside remote tripping capabilities. It is well-suited for commercial and industrial environments requiring emergency stop integration. This bolt-on unit installs into Siemens P1, P2, P3, P4, and P5 panelboards. It crosses over with BAB2040 and QOB240 models. The integrated 120VAC shunt trip mechanism allows the breaker to be opened from a remote location.

Specifications

Key specifications
Brand Siemens
Part Number B24000S01
Series BL
Amperage 40A
Poles 2
Mounting Style Bolt-On
Voltage 120/240VAC
Phase 1
AIC Rating 10kA @ 120/240VAC
Fit and installation
Frame Type B
Terminal Type Lugs
For Use With Siemens P1, P2, P3, P4, P5 Panelboards
Wire Gauge 8-6 AWG (Cu), 8-4 AWG (Al)
Max Wire 6 AWG (Cu), 4 AWG (Al)
Min Wire 8 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Padlock Attachment, Auxiliary Switch, Alarm Switch
Accessories Shunt Trip 120VAC (Factory Installed)
Standards CSA C22.2 No. 5, HACR, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Insta-Wire

Product FAQs

6 answers
Which panelboards are compatible with the Siemens B24000S01 circuit breaker?

This bolt-on circuit breaker is designed for installation in Siemens P1, P2, P3, P4, and P5 panelboards.

What does the 00S01 suffix mean on the B24000S01 catalog number?

The 00S01 suffix indicates the inclusion of a factory-installed 120V AC shunt trip accessory. This allows the breaker to be tripped remotely using a 120V control signal, which is commonly used for emergency stop integration.

What is the standard non-shunt trip equivalent of the B24000S01?

If your application does not require a remote shunt trip, the standard replacement is the Siemens B240. Both are 40A, 2-pole, BL-frame bolt-on breakers, but the B240 omits the 120V AC shunt trip mechanism.

Can the B24000S01 be installed in Square D or Eaton panelboards?

No. While it may share similar electrical ratings with Eaton BAB2040 or Square D QOB240 breakers, the Siemens B24000S01 is only UL listed for use in compatible Siemens P1 through P5 panelboards.

How is the shunt trip activated on the B24000S01?

The factory-installed shunt trip must be wired to a separate 120V AC control circuit. When this control circuit is energized, typically via an emergency stop button or automated control system, the internal coil activates and mechanically opens the breaker contacts.

How does the thermal-magnetic trip unit on the B24000S01 operate?

The breaker features a fixed thermal-magnetic trip unit with Long-Time and Instantaneous (LI) functions. The thermal component provides delayed tripping for sustained overloads, while the magnetic component provides instantaneous tripping for severe short circuits.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 35 reviews
Total 5 star reviews: 34
Total 4 star reviews: 1
Total 3 star reviews: 0
Total 2 star reviews: 0
Total 1 star reviews: 0
Reviews Summary
Customers say these circuit breakers meet their specifications and perform as expected. Many reviews highlight the quick delivery times and competitive pricing. Frequent comments address the reliable product quality and ease of installation. The ordering process receives praise for its simplicity, with users noting consistent product availability.
Rating
Ratings
35 reviews
  • TS
    Tom S.
    Verified Buyer
    Reviewing
    Siemens B3100 3 Pole Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/3/26
    Superbreakers is our go to!

    Great prices, great service and quick delivery.

  • MG
    Maggie G.
    Verified Buyer
    Reviewing
    Siemens B250 - 50A 2 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/24/26
    Great Service

    Came in great condition and in an incredibly timely manner. Will continue superbreakers for all of my orders in the future!

  • DB
    Donnie B.
    Verified Buyer
    Reviewing
    Siemens B115 - 15A 1 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/11/26
    New Breaker

    Awesome breaker & Superbreakers is a awesome company!

  • BL
    Brian L.
    Verified Buyer
    Reviewing
    Siemens B120 - 20A 1 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/4/26
    Brian

    Works great

  • JF
    Joseph F.
    Verified Buyer
    Reviewing
    Siemens B120 - 20A 1 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    3/23/26
    Great value

    It was a great value