Circuit Breakers

Edmundson Industrial sources circuit breakers across every major line — molded-case (MCCB), low-voltage power/air, medium-voltage vacuum, and motor circuit protectors — including the discontinued frames that hold up a repair. Send the breaker catalog number and we quote availability, condition, and lead time.

Independent sourcing, not an authorized distributor. We supply breakers new, surplus, and used-tested, with condition disclosed before sale. Manufacturer names and part numbers are used here for reference only.

Types we source

Type	Notes
Molded-Case (MCCB)	Thermal-magnetic and electronic-trip frames, 15 A to 2500+ A
Power / Air (LVPCB)	Low-voltage power air circuit breakers, drawout and fixed
Vacuum (MV)	Medium-voltage vacuum circuit breakers, 5–38 kV
Motor Circuit Protectors (MCP)	Instantaneous-trip breakers for motor branch circuits
Trip Units & Parts	Trip units, rating plugs, accessories, and breaker parts

Brands we source & cross-reference

Brand	Common lines	Cross-reference
Square D	QO, QOB, PowerPact, I-Line, FA/KA/LA legacy	Square D ›
Eaton / Cutler-Hammer	Series C, F-frame, legacy Westinghouse	Eaton ›
Siemens / ITE	Molded-case and legacy ITE frames	Siemens ›
General Electric	Spectra, TEY, and legacy frames	GE ›
Westinghouse	Legacy molded-case frames	Westinghouse ›
ABB	Molded-case and power breakers	All breakers ›

Breaker no longer made? Start at the obsolete circuit breaker cross-reference, or jump to a Square D family: FA / FAL, KA / KAL, LA, HDA / HJA, MA / MH.

How to specify a breaker

Frame and type (MCCB, power/air, vacuum, MCP)
Ampere rating and trip setting
Poles and voltage
Interrupting rating (AIC / kAIC)
Trip unit, rating plug, and accessories
Mounting (plug-in, bolt-on, or drawout)

How we quote a breaker

Send the breaker catalog number, or the frame, amp rating, poles, and voltage.
We confirm the trip unit, interrupting rating (AIC), and accessories.
We quote condition, price, and lead time — new, surplus, or used-tested, same-day on most requests.
Need a custom enclosure, panel, or mounting? Our fabrication side builds and modifies enclosures and panels to fit.

Condition & sourcing

We supply circuit breakers new, surplus, and used-tested, with condition disclosed before sale and photos on request. We are an independent surplus and sourcing company, not an authorized distributor.

FAQ

Do you carry obsolete breaker frames?

Yes. Discontinued and obsolete frames are a core part of what we source, through surplus stock and cross-referenced equivalents. Condition is disclosed before sale.

Can you cross-reference a breaker to a replacement?

Yes. Send the part number and we cross-reference it to an available equivalent where one exists. Cross-references are a starting point, so verify against the nameplate and the interrupting rating before you install.

Do you supply trip units and breaker parts?

Yes. We source trip units, rating plugs, and accessories along with complete breakers.

Are you an authorized distributor?

No. Edmundson Industrial is an independent surplus and sourcing company, not an authorized distributor. We supply breakers new, surplus, and used-tested with condition disclosed before sale.

Request a Quote

or send the part number or specs to sales@edmundsonindustrial.com · (832) 975-8827 · Houston, TX. Same-day response on most requests.