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
LMG3C800
LMG3C800
Limited Stock
From
Get Price
Siemens
800
600
LMG3C800B
LMG3C800B
Limited Stock
From
Get Price
Siemens
800
600
LMG3C800L
LMG3C800L
Limited Stock
From
Get Price
Siemens
800
600
LMG3D800
LMG3D800
Limited Stock
From
Get Price
Siemens
800
600
LMG3D800B
LMG3D800B
Limited Stock
From
Get Price
Siemens
800
600
LMG3D800L
LMG3D800L
Limited Stock
From
Get Price
Siemens
800
600
LMG3E800
LMG3E800
Limited Stock
From
Get Price
Siemens
800
600
LMG3E800B
LMG3E800B
Limited Stock
From
Get Price
Siemens
800
600
LMG3E800L
LMG3E800L
Limited Stock
From
Get Price
Siemens
800
600
LMG3G600
LMG3G600
Limited Stock
From
Get Price
Siemens
600
600
LMG3G600B
LMG3G600B
Limited Stock
From
Get Price
Siemens
600
600
LMG3G600L
LMG3G600L
Limited Stock
From
Get Price
Siemens
600
600
LMG3G800
LMG3G800
Limited Stock
From
Get Price
Siemens
800
600
LMG3G800B
LMG3G800B
Limited Stock
From
Get Price
Siemens
800
600
LMG3G800L
LMG3G800L
Limited Stock
From
Get Price
Siemens
800
600
LMG3K600
LMG3K600
Limited Stock
From
Get Price
Siemens
600
600
LMG3K600B
LMG3K600B
Limited Stock
From
Get Price
Siemens
600
600
LMG3K600L
LMG3K600L
Limited Stock
From
Get Price
Siemens
600
600
LMG3K800
LMG3K800
Limited Stock
From
Get Price
Siemens
800
600
LMG3K800B
LMG3K800B
Limited Stock
From
Get Price
Siemens
800
600
LMG3K800L
LMG3K800L
Limited Stock
From
Get Price
Siemens
800
600
LMG3N800
LMG3N800
Limited Stock
From
Get Price
Siemens
800
600
LMG3N800B
LMG3N800B
Limited Stock
From
Get Price
Siemens
800
600
LMG3N800L
LMG3N800L
Limited Stock
From
Get Price
Siemens
800
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.