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
458D511G12
458D511G12
Limited Stock
From
Get Price
Eaton
25
500
458D511G14
458D511G14
Limited Stock
From
Get Price
Eaton
75
500
458D512G11
458D512G11
Limited Stock
From
Get Price
Eaton
15
500
458D512G12
458D512G12
Limited Stock
From
Get Price
Eaton
25
500
458D512G13
458D512G13
Limited Stock
From
Get Price
Eaton
50
500
458D512G14
458D512G14
Limited Stock
From
Get Price
Eaton
75
500
458D512G15
458D512G15
Limited Stock
From
Get Price
Eaton
100
500
504C191G22
504C191G22
Limited Stock
From
Get Price
Eaton
175
500
504C191G23
504C191G23
Limited Stock
From
Get Price
Eaton
175
500
504C191G25
504C191G25
Limited Stock
From
Get Price
Eaton
225
500
504C191G27
504C191G27
Limited Stock
From
Get Price
Eaton
250
500
5925-00-113-5066
5925-00-113-5066
Limited Stock
From
Get Price
Eaton
15
500
5925-00-167-7513
5925-00-167-7513
Limited Stock
From
Get Price
Eaton
75
500
5925-00-199-9518
5925-00-199-9518
Limited Stock
From
Get Price
Eaton
30
500
5925-00-258-2945
5925-00-258-2945
Limited Stock
From
Get Price
Eaton
100
250
5925-00-265-9474
5925-00-265-9474
Limited Stock
From
Get Price
Eaton
25
500
5925-00-396-2283
5925-00-396-2283
Limited Stock
From
Get Price
Eaton
15
500
5925-00-396-2339
5925-00-396-2339
Limited Stock
From
Get Price
Eaton
50
500
5925-00-396-2345
5925-00-396-2345
Limited Stock
From
Get Price
Eaton
75
500
5925-00-397-8258
5925-00-397-8258
Limited Stock
From
Get Price
Eaton
15
500
5925-00-399-8120
5925-00-399-8120
Limited Stock
From
Get Price
Eaton
25
250
5925-00-399-8127
5925-00-399-8127
Limited Stock
From
Get Price
Eaton
100
250
5925-00-450-6275
5925-00-450-6275
Limited Stock
From
Get Price
Eaton
100
500
5925-00-499-0088
5925-00-499-0088
Limited Stock
From
Get Price
Eaton
175
500
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.