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    • B2125H – SIEMENS 2P100A 240V BOLT ON 22kA BREAKER

    Standard · 125A · 2-Pole · 240V · Bolt-On

    The B2125H – SIEMENS 2P100A 240V Bolt-On Breaker offers robust protection with a 22kA interrupting capacity. Designed for reliability and efficiency, this two-pole circuit breaker is ideal for residential and commercial applications. Upgrade your electrical system with this durable, high-performance breaker for enhanced safety and peace of mind.

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    SKU SIEB2125H Categories , ,
    Specifications
    BrandSiemens
    TypeStandard (Thermal-Magnetic)
    Amperage125 A
    Poles2-Pole
    Voltage240V
    Interrupting Rating22 kA
    MountingBolt-On
    Frame / SeriesB
    Catalogue #B2125H
    Panel Compatibility

    The Siemens B2125H is a bolt-on style 2-pole, 125 A, 240 V breaker from the Siemens BL/BA bolt-on series, rated at 22 kA interrupting capacity. It is designed to mount in compatible Siemens/ITE bolt-on panelboards and loadcentres, including select EQ, ES, PL, and PN series panels that accept bolt-on (BL/BA) style breakers — not plug-in QP/QT-style loadcentres.

    At 125 A on a 2-pole configuration, this breaker is well suited for larger branch or sub-feed circuits in both residential and commercial applications. Not all Siemens panels accept bolt-on breakers — send us your panel model number and we'll confirm compatibility before you order.

    No — bolt-on and plug-in are not interchangeable. The B2125H uses a bolt-on mounting mechanism (BL/BA series), which physically bolts to the bus bar and is required by certain Siemens/ITE commercial and residential panelboards. Plug-in panels (designed for QP/QT breakers) use a different bus design. Always verify your panel's accepted breaker type before purchasing.

    Siemens has periodically updated and rationalized its bolt-on breaker lineup. If the B2125H is discontinued or allocated, Northern Breaker Group specializes in sourcing obsolete and hard-to-find breakers across Canada. Contact our Calgary, Edmonton, or Vancouver locations and we'll work to locate new, surplus, or suitable replacement stock for you.

    Yes — a 2-pole 125 A bolt-on breaker like the B2125H is commonly used as a sub-feed protective device feeding a downstream loadcentre or sub-panel. However, whether it can serve as a listed main breaker depends on the specific panel's labelling and CSA/UL listing. Check your panel's documentation or consult with our team to confirm the correct application for your installation.

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    Contact Northern Breaker Group

    Experience the advantage of working with Canada's fastest growing electrical supply network—where local expertise meets national capabilities.
    Whether you’re a contractor needing same-day pickup in Calgary, an facility manager sourcing obsolete parts in Edmonton, or a Vancouver electrician requiring marine-rated components, Northern Breaker Group is your trusted electrical supply partner.

    For General Inquiries:

    Visit any of our three locations or use our online quote system to connect with the Northern Breaker Group network.

    For Location-Specific Needs:

    Calgary: 403-520-0014

    Edmonton: 780-758-6122

    Vancouver: 604-283-6336

    Reach out to us today to discuss your needs.

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