1. Home / 
  2. All Categories / 
  3. Circuit Breaker / 
  4. Molded Case Circuit Breaker

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
JA2090AW
JA2090AW
Limited Stock
From
Get Price
Westinghouse
90
600
JA2090SV
JA2090SV
Limited Stock
From
Get Price
Westinghouse
90
600
JA2090SVW
JA2090SVW
Limited Stock
From
Get Price
Westinghouse
90
600
JA2090V
JA2090V
Limited Stock
From
Get Price
Westinghouse
90
600
JA2090VW
JA2090VW
Limited Stock
From
Get Price
Westinghouse
90
600
JA2090WS
JA2090WS
Limited Stock
From
Get Price
Westinghouse
90
600
JA2100A
JA2100A
Limited Stock
From
Get Price
Westinghouse
100
600
JA2100AW
JA2100AW
Limited Stock
From
Get Price
Westinghouse
100
600
JA2100SV
JA2100SV
Limited Stock
From
Get Price
Westinghouse
100
600
JA2100SVW
JA2100SVW
Limited Stock
From
Get Price
Westinghouse
100
600
JA2100V
JA2100V
Limited Stock
From
Get Price
Westinghouse
100
600
JA2100VW
JA2100VW
Limited Stock
From
Get Price
Westinghouse
100
600
JA2100WS
JA2100WS
Limited Stock
From
Get Price
Westinghouse
100
600
JA2125A
JA2125A
Limited Stock
From
Get Price
Westinghouse
125
600
JA2125AW
JA2125AW
Limited Stock
From
Get Price
Westinghouse
125
600
JA2125SV
JA2125SV
Limited Stock
From
Get Price
Westinghouse
125
600
JA2125SVW
JA2125SVW
Limited Stock
From
Get Price
Westinghouse
125
600
JA2125V
JA2125V
Limited Stock
From
Get Price
Westinghouse
125
600
JA2125VW
JA2125VW
Limited Stock
From
Get Price
Westinghouse
125
600
JA2125W
JA2125W
Limited Stock
From
Get Price
Westinghouse
125
600
JA21500SMW
JA21500SMW
Limited Stock
From
Get Price
Westinghouse
225
600
JA2150A
JA2150A
Limited Stock
From
Get Price
Westinghouse
150
600
JA2150SV
JA2150SV
Limited Stock
From
Get Price
Westinghouse
150
600
JA2150SWV
JA2150SWV
Limited Stock
From
Get Price
Westinghouse
150
600
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.