Circuit Breakers

Buy industrial, commercial, replacement, and obsolete circuit breakers from Ampstate. We supply molded-case, miniature, air, bolt-on, electronic-trip, thermal-magnetic, and specialty breakers for panelboards, switchboards, switchgear, motor control centers, and bus plugs across Canada and the United States.

Shop Circuit Breakers by Type

• Molded Case Circuit Breakers (MCCB)
• Miniature Circuit Breakers (MCB)
• Air Circuit Breakers (ACB)
• Bolt-On Circuit Breakers
• AFCI and GFCI Breakers
• Breaker Trip Units, Rating Plugs and Accessories

Major Circuit Breaker Brands

Ampstate supports Eaton, Cutler-Hammer, Westinghouse, Square D, Schneider Electric, Siemens, ITE, GE, ABB, Federal Pioneer, Federal Pacific, Noark, LS Electric, and other current and legacy breaker families.

How to Identify the Correct Breaker

Send the exact catalog number and clear photos of the front label, side label and terminals. Include amp rating, poles, voltage, interrupting rating (kAIC), frame and trip-unit information, mounting style, required lugs or hardware, condition requirement, quantity, and destination ZIP or postal code. Breakers with similar ratings are not automatically interchangeable; panel, bus, mounting, listing, and series compatibility must be verified.

Request a Circuit Breaker Quote

For hard-to-find or obsolete breakers, email sales@ampstate.com. Ampstate provides catalog-number matching, technical review, accessory identification, project support, testing documentation where applicable, and shipping across Canada and the USA.