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PowerPact B-Frame Molded Case Circuit Breakers

A flexible, high-performance offer, certified to global standards from 15 to 125 A

PowerPact B circuit breakers – efficiency that clicks.

PowerPact B-Frame Molded Case Circuit Breakers
  • Features

    PowerPact B-Frame Molded Case Circuit Breakers give you the right combination of features and performance to satisfy circuit breaker requirements. The product delivers unmatched design flexibility from 15 to 125A, offering the benefits of a flexible, modular, and easy-to-install circuit breaker.

    PowerPact B brings thermal magnetic circuit protection in a compact size and offers a wide range of accessories, auxiliaries, and lug options:

    • Available in 1, 2, 3, and 4-pole unit mount construction & 1, 2, and 3-pole I-Line construction
    • Economical fixed thermal magnetic trip units from 15-125A up to 600Y/347 Vac and 250 Vdc
    • Interrupting ratings include D-18 kA, G-35 kA, and J-65 kA at 480 Vac; D-10 kA, G-20 kA, and J-50 kA Vdc*
    • Unit mount construction includes integrated DIN rail and traditional back pan mounting capability
    • Best in class I-Line mounting for Square D Panelboard and Switchboard applications
    • A wide range of field-installable accessories for more flexibility and less inventory
    • Modular, easy to install, terminal options include patented EverLink lugs with or without integrated control wire terminals, mechanical lugs, compression lugs, power distribution connectors, and busbar connectors
    • Broad offering of operating mechanisms designed to be used as the main panel disconnect for control panel applications
    • 2-3 pole automatic molded case switches available at 125A up to 600 Vac delta
    • UL, CSA, NOM, IEC, CCC certified and CE marked for global acceptance
    *1 Pole configurations available at 125 Vdc.
    Learn more


    Great things come in small packages. With 25% more capacity in less than two-thirds the size of legacy 100A circuit breakers, PowerPact B:
    • Saves time in electrical design, mounting, and wiring. With integrated DIN rail mounting and built-in control wire terminals, your work clicks right into place.
    • Tackles last minute changes. When they come up, be ready with one-click field installable accessories and the industry’s widest range of operating mechanisms.
    • Provides fast startup and fewer call-backs. EverLink lugs combat cable creep and deliver a durable, long-term connection.


    • Industrial Control Panels
    • Commercial OEM
    • Electrical Distribution Equipment
    • Commercial Buildings
    • Industrial Buildings