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
434778
434778
Limited Stock
From
Get Price
General Electric
40
690
434781
434781
Limited Stock
From
Get Price
General Electric
50
690
434784
434784
Limited Stock
From
Get Price
General Electric
63
690
434808
434808
Limited Stock
From
Get Price
General Electric
100
690
434811
434811
Limited Stock
From
Get Price
General Electric
125
690
434817
434817
Limited Stock
From
Get Price
General Electric
160
690
434829
434829
Limited Stock
From
Get Price
General Electric
50
690
434832
434832
Limited Stock
From
Get Price
General Electric
100
690
434838
434838
Limited Stock
From
Get Price
General Electric
160
690
434847
434847
Limited Stock
From
Get Price
General Electric
25
690
434850
434850
Limited Stock
From
Get Price
General Electric
32
690
434853
434853
Limited Stock
From
Get Price
General Electric
40
690
434856
434856
Limited Stock
From
Get Price
General Electric
50
690
434859
434859
Limited Stock
From
Get Price
General Electric
63
690
434871
434871
Limited Stock
From
Get Price
General Electric
63
690
434883
434883
Limited Stock
From
Get Price
General Electric
25
690
434886
434886
Limited Stock
From
Get Price
General Electric
32
690
434892
434892
Limited Stock
From
Get Price
General Electric
50
690
434895
434895
Limited Stock
From
Get Price
General Electric
63
690
434919
434919
Limited Stock
From
Get Price
General Electric
100
690
434922
434922
Limited Stock
From
Get Price
General Electric
125
690
434940
434940
Limited Stock
From
Get Price
General Electric
7
690
434943
434943
Limited Stock
From
Get Price
General Electric
12
690
434949
434949
Limited Stock
From
Get Price
General Electric
30
690
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.