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
PLA34040U44A
PLA34040U44A
Limited Stock
From
Get Price
Square D
400
480
PLA34060CU33A
PLA34060CU33A
Limited Stock
From
Get Price
Square D
600
480
PLA34060CU44A
PLA34060CU44A
Limited Stock
From
Get Price
Square D
600
480
PLA34060CU63AE1
PLA34060CU63AE1
Limited Stock
From
Get Price
Square D
600
480
PLA34060U41A
PLA34060U41A
Limited Stock
From
Get Price
Square D
600
480
PLA34080CU31A
PLA34080CU31A
Limited Stock
From
Get Price
Square D
800
480
PLA34080CU33A
PLA34080CU33A
Limited Stock
From
Get Price
Square D
800
480
PLA34080CU44A
PLA34080CU44A
Limited Stock
From
Get Price
Square D
800
480
PLA34080CU63AE1
PLA34080CU63AE1
Limited Stock
From
Get Price
Schneider Electric
800
480
PLA34080SA
PLA34080SA
Limited Stock
From
Get Price
Square D
800
480
PLA34080U31A
PLA34080U31A
Limited Stock
From
Get Price
Schneider Electric
800
480
PLA34080U64AE1
PLA34080U64AE1
Limited Stock
From
Get Price
Square D
800
480
PLA34100U31A
PLA34100U31A
Limited Stock
From
Get Price
Schneider Electric
1000
480
PLA34100U33A
PLA34100U33A
Limited Stock
From
Get Price
Schneider Electric
1000
480
PLA34100U43A
PLA34100U43A
Limited Stock
From
Get Price
Schneider Electric
1000
480
PLA34100U64AE1
PLA34100U64AE1
Limited Stock
From
Get Price
Square D
1000
480
PLA34120U31A
PLA34120U31A
Limited Stock
From
Get Price
Square D
1200
480
PLA34120U43A
PLA34120U43A
Limited Stock
From
Get Price
Square D
1200
480
PLA34120U63AE1
PLA34120U63AE1
Limited Stock
From
Get Price
Square D
1200
480
PLA36080U31A
PLA36080U31A
Limited Stock
From
Get Price
Schneider Electric
800
600
PLA36120U64AE1
PLA36120U64AE1
Limited Stock
From
Get Price
Square D
1200
600
PLL34000S10
PLL34000S10
Limited Stock
From
Get Price
Square D
1000
480
PLL34000S12
PLL34000S12
Limited Stock
From
Get Price
Square D
1200
480
PLL34000S60
PLL34000S60
Limited Stock
From
Get Price
Square D
600
480
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.