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.
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
Review summary
Customers rate this product 5.0 out of 5 based on 35 reviews.
5.0
Rated 5.0 out of 5 stars
Based on 35 reviews
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Total 5 star reviews: 34
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Total 4 star reviews: 1
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Total 3 star reviews: 0
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Total 2 star reviews: 0
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Total 1 star reviews: 0
Reviews Summary
Generated by AI from 66 most recent customer reviews
Last updated 8/15/25
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.