Refine Results

In Stock

Applied Filters:

Square D

Subcategory

All

Manufacturers (1)

Square D

Amperage

All

Poles

All

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.

Popular Categories

Air

Insulated Case

Molded Case

SORT BY

Part Number	PRICE	Manufacturer	Amperage	Poles
HDA36040AAUJ	In Stock From $648^.56	Square D	40	3
HDA36040AAUJYP	In Stock From $648^.56	Square D	40	3
HDA36040AAUK	In Stock From $648^.56	Square D	40	3
HDA36040AAUKYP	In Stock From $648^.56	Square D	40	3
HDA36040AAUN	In Stock From $648^.56	Square D	40	3
HDA36040AAUNYP	In Stock From $648^.56	Square D	40	3
HDA36040AAUO	In Stock From $648^.56	Square D	40	3
HDA36040AAUOYP	In Stock From $648^.56	Square D	40	3
HDA36040AAUP	In Stock From $648^.56	Square D	40	3
HDA36040AAUPYP	In Stock From $648^.56	Square D	40	3
HDA36040AAUR	In Stock From $648^.56	Square D	40	3
HDA36040AAURYP	In Stock From $648^.56	Square D	40	3
HDA36040AAUS	In Stock From $648^.56	Square D	40	3
HDA36040AAUSYP	In Stock From $648^.56	Square D	40	3
HDA36040AAYP	In Stock From $648^.56	Square D	40	3
HDA36040AB	In Stock From $648^.56	Square D	40	3
HDA36040ABBC	In Stock From $648^.56	Square D	40	3
HDA36040ABBCSD	In Stock From $648^.56	Square D	40	3
HDA36040ABBCSDYP	In Stock From $648^.56	Square D	40	3
HDA36040ABBCSH	In Stock From $648^.56	Square D	40	3
HDA36040ABBCSHYP	In Stock From $648^.56	Square D	40	3
HDA36040ABBCSJ	In Stock From $648^.56	Square D	40	3
HDA36040ABBCSJYP	In Stock From $648^.56	Square D	40	3
HDA36040ABBCSK	In Stock From $648^.56	Square D	40	3

1
...
436
437
438
...
13,245

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