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
MQJ2175KL
MQJ2175KL
Limited Stock
From
Get Price
Murray Corporation
175
240
MQJ2200KH
MQJ2200KH
Limited Stock
From
Get Price
Murray Corporation
200
240
MQJ2200KL
MQJ2200KL
Limited Stock
From
Get Price
Murray Corporation
200
240
MQJ2225KL
MQJ2225KL
Limited Stock
From
Get Price
Murray Corporation
225
240
MQJ260KH
MQJ260KH
Limited Stock
From
Get Price
Murray Corporation
60
240
MQJ270KH
MQJ270KH
Limited Stock
From
Get Price
Murray Corporation
70
240
MQJ270KL
MQJ270KL
Limited Stock
From
Get Price
Murray Corporation
70
240
MQJ280KH
MQJ280KH
Limited Stock
From
Get Price
Murray Corporation
80
240
MQJ280KL
MQJ280KL
Limited Stock
From
Get Price
Murray Corporation
80
240
MQJ290KH
MQJ290KH
Limited Stock
From
Get Price
Murray Corporation
90
240
MQJ290KL
MQJ290KL
Limited Stock
From
Get Price
Murray Corporation
90
240
MQJ3125KH
MQJ3125KH
Limited Stock
From
Get Price
Murray Corporation
125
240
MQJ3150KH
MQJ3150KH
Limited Stock
From
Get Price
Murray Corporation
150
240
MQJ3175KH
MQJ3175KH
Limited Stock
From
Get Price
Murray Corporation
175
240
MQJ3200KH
MQJ3200KH
Limited Stock
From
Get Price
Murray Corporation
200
240
MQJ3225KH
MQJ3225KH
Limited Stock
From
Get Price
Murray Corporation
225
240
MQJ360KH
MQJ360KH
Limited Stock
From
Get Price
Murray Corporation
60
240
MQJ370KH
MQJ370KH
Limited Stock
From
Get Price
Murray Corporation
70
240
MQJ380KH
MQJ380KH
Limited Stock
From
Get Price
Murray Corporation
80
240
MQJ390KH
MQJ390KH
Limited Stock
From
Get Price
Murray Corporation
90
240
QJ2060KL
QJ2060KL
Limited Stock
From
Get Price
Murray Corporation
60
240
QJ2070KL
QJ2070KL
Limited Stock
From
Get Price
Murray Corporation
70
240
QJ2080KL
QJ2080KL
Limited Stock
From
Get Price
Murray Corporation
80
240
QJ2090KL
QJ2090KL
Limited Stock
From
Get Price
Murray Corporation
90
240
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.