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
KW3400
KW3400
Limited Stock
From
Get Price
Westinghouse
400
690
LG3450S03
LG3450S03
Limited Stock
From
Get Price
Eaton
450
600
PDF33M0600FNNN
PDF33M0600FNNN
Limited Stock
From
Get Price
Eaton
600
600
PDG21M0050TFFJ
PDG21M0050TFFJ
Limited Stock
From
Get Price
Cutler Hammer
50
600
PDG21M0080TFFL
PDG21M0080TFFL
Limited Stock
From
Get Price
Eaton
80
600
PDG23G0110TFFJ
PDG23G0110TFFJ
Limited Stock
From
Get Price
Eaton
110
600
PDG23G0150B2NJ
PDG23G0150B2NJ
Limited Stock
From
Get Price
Eaton
150
600
PDG33F0500TFAJ
PDG33F0500TFAJ
Limited Stock
From
Get Price
Eaton
500
600
PDG33G0200TFAL
PDG33G0200TFAL
Limited Stock
From
Get Price
Cutler Hammer
200
600
PDG33G0300TFAL
PDG33G0300TFAL
Limited Stock
From
Get Price
Cutler Hammer
300
600
PDG33K0400B2NJ
PDG33K0400B2NJ
Limited Stock
From
Get Price
Cutler Hammer
400
600
PDG33M0250TFAL
PDG33M0250TFAL
Limited Stock
From
Get Price
Eaton
250
600
PDG33P0600FNNN
PDG33P0600FNNN
Limited Stock
From
Get Price
Eaton
600
600
PDG43G0800E2NN
PDG43G0800E2NN
Limited Stock
From
Get Price
Eaton
800
600
PDG53K1200E4RN
PDG53K1200E4RN
Limited Stock
From
Get Price
Eaton
1200
600
PDG53M1200E4RN
PDG53M1200E4RN
Limited Stock
From
Get Price
Eaton
1200
600
PDG53P0800D3DN
PDG53P0800D3DN
Limited Stock
From
Get Price
Eaton
800
600
CRDC316T53W
CRDC316T53W
Limited Stock
From
Get Price
Westinghouse
1600
600
CRDC316T54W
CRDC316T54W
Limited Stock
From
Get Price
Westinghouse
1600
600
ELFD3020L
ELFD3020L
Limited Stock
From
Get Price
Westinghouse
20
480
ELFD3025L
ELFD3025L
Limited Stock
From
Get Price
Westinghouse
25
480
ELFD3030L
ELFD3030L
Limited Stock
From
Get Price
Eaton
30
480
ELFD3035L
ELFD3035L
Limited Stock
From
Get Price
Westinghouse
35
480
ELFD3045L
ELFD3045L
Limited Stock
From
Get Price
Cutler Hammer
45
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.