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Circuit Breaker

For power distribution and electrical protection systems, circuit breakers are among the most critical components for safeguarding equipment, personnel, and facilities from electrical overloads and short circuits. Circuit breakers automatically interrupt electrical current flow when abnormal conditions are detected, protecting circuits from damage while allowing manual reset and continued operation. Electrical.com carries an extensive selection of circuit breakers from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of commercial buildings, manufacturing facilities, data centers, and industrial power distribution applications.

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Part Number	PRICE	Manufacturer	Amperage	Poles
MAY3400	In Stock From $1,473^.35	Westinghouse	400	3
MAY3450	In Stock From $1,473^.35	Westinghouse	450	3
MAY3500	In Stock From $1,034^.78	Westinghouse	500	3
MAY3600	In Stock From $1,164^.12	Westinghouse	600	3
MAY3700	In Stock From $1,473^.35	Westinghouse	700	3
MAY3800	In Stock From $1,473^.35	Westinghouse	800	3
MAY3800F	In Stock From $1,093^.50	Westinghouse	800	3
MCYA3800F	In Stock From $139^.60	Westinghouse	800	3
NB21000T	In Stock From $1,085^.50	Westinghouse	-	2
NB21200T	In Stock From $1,572^.72	Westinghouse	-	2
NB2700T	In Stock From $1,379^.59	Westinghouse	-	2
NB2800T	In Stock From $1,581^.02	Westinghouse	-	2
NB31000T	In Stock From $1,617^.54	Westinghouse	-	3
NB31200T	In Stock From $1,443^.48	Westinghouse	-	3
NB3400PT	In Stock From $4,267^.44	Westinghouse	-	3
NB3500PT	In Stock From $1,738^.51	Westinghouse	-	3
NB3700T	In Stock From $1,374^.11	Westinghouse	-	3
NB3800T	In Stock From $393^.23	Westinghouse	-	3
NB3900T	In Stock From $746^.53	Westinghouse	-	3
PA21200T	In Stock From $8^.28	Westinghouse	-	2
PA31000T	In Stock From $197^.47	Westinghouse	-	3
PA31400T	In Stock From $2,728^.54	Westinghouse	-	3
PA31600T	In Stock From $374^.54	Westinghouse	-	3
PA31800T	In Stock From $5,645^.89	Westinghouse	-	3

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Popular Circuit Breaker Manufacturers

Electrical.com stocks the largest inventory of circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified circuit protection equipment available for immediate shipment. From residential to industrial applications, across all voltage and amperage ratings, we have what you need when others say no. Our comprehensive circuit breaker inventory spans all voltage classes, amperage ratings, and pole configurations from all major manufacturers including current production and discontinued models from legacy suppliers. Available in new factory condition, surplus stock, and re-certified options‚ All backed by our standard 2-year Electrical.com warranty. Our circuit breakers serve critical applications across manufacturing facilities, commercial buildings, data centers, healthcare facilities, utilities and power generation, industrial plants, residential construction, telecommunications infrastructure, and process control installations.

Whether you're maintaining legacy equipment with obsolete circuit breaker models or sourcing current production components for new electrical systems, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime and keep your operations running. Need circuit breakers now? Call 877-999-7077 or email [email protected]. With same-day shipping available and the right parts ready to ship from our nearest warehouse location, Electrical.com gets your operations back online fast. We can say yes when others have to say no.

Learn More

The Basics of A Circuit Breaker

The Main Types Of Breaker Protections