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Siemens B150H Miniature Circuit Breaker

  • 50A
  • 1 Pole
  • Bolt-On
Siemens B150H
Miniature Circuit Breaker
Brand Siemens
SKU B150H
Select Item Condition
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  • 50A
  • 1 Pole
  • Bolt-On

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Siemens B150H - 50A 1 Pole Miniature Circuit Breaker

Siemens B150H - 50A 1 Pole Miniature Circuit Breaker

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$12.63 No Stock

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Description

Part of the BL series, this 50A single-pole breaker is built for commercial and industrial applications. It provides essential long-time and instantaneous trip functions to handle overloads and short circuits. Designed with a bolt-on mounting style, the unit installs into Siemens P1 through P5 panelboards. It accepts 8-6 AWG copper or 8-4 AWG aluminum wiring via standard lug terminals. Rated for 120/240VAC systems, it features a robust 22kAIC interrupting capacity and is HACR rated.

Specifications

Key specifications
Brand Siemens
Part Number B150H-R
Series BL
Amperage 50A
Poles 1
Mounting Style Bolt-On
Voltage 120/240VAC
Phase 1
AIC Rating 22kA @ 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
Min Wire 8 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment, Handle Tie
Standards CSA C22.2 No. 5, UL 489
Approval CSA, UL
Temp Rating 40C

Product FAQs

4 answers
Which panelboards are compatible with the Siemens B150H circuit breaker?

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

What does the H in the B150H catalog number indicate?

The H designates a high interrupting rating. The B150H is rated at 22kAIC, whereas the standard B150 model is rated at 10kAIC.

Can the Siemens B150H replace older I-T-E or Gould breakers?

Yes. Siemens acquired I-T-E and Gould, making the B150H a direct replacement for legacy I-T-E and Gould BLH or B150H breakers with the same specifications.

What are the conductor size limits for the B150H terminal lugs?

The terminal lugs accommodate 8 to 6 AWG copper conductors or 8 to 4 AWG aluminum conductors.

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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