Refine Results

In Stock

Applied Filters:

Molded Case Circuit Breaker

Square D

Subcategory

Molded Case Circuit Breaker

Manufacturers (1)

Square D

Amperage

All

Voltage

All

Molded Case Circuit Breaker

For circuit breaker systems in commercial and industrial facilities, molded case circuit breakers are among the most widely used components for reliable overcurrent protection and electrical distribution. Molded case circuit breakers provide automatic circuit interruption during overload or short circuit conditions, protecting electrical systems and equipment from damage while enabling manual switching control. Electrical.com carries an extensive selection of molded case 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.

SORT BY

Part Number	PRICE	Manufacturer	Amperage	Voltage
HDA36040UK	In Stock From $911^.98	Square D	40	600
HDA36040UKYP	In Stock From $911^.98	Square D	40	600
HDA36040UN	In Stock From $911^.98	Square D	40	600
HDA36040UNYP	In Stock From $911^.98	Square D	40	600
HDA36040UO	In Stock From $911^.98	Square D	40	600
HDA36040UOYP	In Stock From $911^.98	Square D	40	600
HDA36040UP	In Stock From $911^.98	Square D	40	600
HDA36040UPYP	In Stock From $911^.98	Square D	40	600
HDA36040UR	In Stock From $911^.98	Square D	40	600
HDA36040URYP	In Stock From $911^.98	Square D	40	600
HDA36040US	In Stock From $911^.98	Square D	40	600
HDA36040USYP	In Stock From $911^.98	Square D	40	600
HDA36040YE	In Stock From $250^.80	Square D	40	600
HDA36050AA	In Stock From $1,201^.01	Square D	50	600
HDA36050AABC	In Stock From $1,201^.01	Square D	50	600
HDA36050AABCSD	In Stock From $1,201^.01	Square D	50	600
HDA36050AABCSDYP	In Stock From $1,201^.01	Square D	50	600
HDA36050AABCSH	In Stock From $1,201^.01	Square D	50	600
HDA36050AABCSHYP	In Stock From $1,201^.01	Square D	50	600
HDA36050AABCSJ	In Stock From $1,201^.01	Square D	50	600
HDA36050AABCSJYP	In Stock From $1,201^.01	Square D	50	600
HDA36050AABCSK	In Stock From $1,201^.01	Square D	50	600
HDA36050AABCSKYP	In Stock From $1,201^.01	Square D	50	600
HDA36050AABCSL	In Stock From $1,201^.01	Square D	50	600

1
...
452
453
454
...
9,875

Popular Molded Case Circuit Breaker Manufacturers

Electrical.com stocks the largest inventory of molded case circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified MCCBs available for immediate shipment. From standard thermal-magnetic breakers to electronic trip units across all amperage ratings, we have what you need when others say no. Our comprehensive molded case circuit breaker inventory spans all voltage and current ratings, frame sizes, and interrupting capacities 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 molded case circuit breakers serve critical applications across commercial buildings, industrial facilities, manufacturing plants, data centers, healthcare facilities, distribution panels, motor control centers, switchboards, and power distribution systems.

Whether you're maintaining legacy equipment with obsolete MCCB models or sourcing current production breakers for new installations and retrofits, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need molded case 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.