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
S3N035TW-2
S3N035TW-2
Limited Stock
From
Get Price
ABB
35
600
S3N040TW-2
S3N040TW-2
Limited Stock
From
Get Price
ABB
40
600
S3N150MW
S3N150MW
Limited Stock
From
Get Price
ABB
150
600
S3N150TW-2
S3N150TW-2
Limited Stock
From
Get Price
ABB
150
600
S3N200TW-2
S3N200TW-2
Limited Stock
From
Get Price
ABB
200
600
S3NQ015TW
S3NQ015TW
Limited Stock
From
Get Price
ABB
15
600
S3NQ020TW
S3NQ020TW
Limited Stock
From
Get Price
ABB
20
600
S3NQ050TW
S3NQ050TW
Limited Stock
From
Get Price
ABB
50
600
S3NQ070TW
S3NQ070TW
Limited Stock
From
Get Price
ABB
70
600
S3NQ080TW
S3NQ080TW
Limited Stock
From
Get Price
ABB
80
600
S3NQ150TW
S3NQ150TW
Limited Stock
From
Get Price
ABB
150
600
S3NQ175TW
S3NQ175TW
Limited Stock
From
Get Price
ABB
175
600
S4H-3P-100A
S4H-3P-100A
Limited Stock
From
Get Price
ABB
100
600
S4H100CW
S4H100CW
Limited Stock
From
Get Price
ABB
100
600
S4H100EW
S4H100EW
Limited Stock
From
Get Price
ABB
100
600
S4H100MW
S4H100MW
Limited Stock
From
Get Price
ABB
100
600
S4H250CW
S4H250CW
Limited Stock
From
Get Price
ABB
250
600
S4H250EW
S4H250EW
Limited Stock
From
Get Price
ABB
250
600
S4H250MW
S4H250MW
Limited Stock
From
Get Price
ABB
250
600
S4N-3P-100A
S4N-3P-100A
Limited Stock
From
Get Price
ABB
100
600
S5L400BW
S5L400BW
Limited Stock
From
Get Price
ABB
400
600
S5N-3P-300A
S5N-3P-300A
Limited Stock
From
Get Price
ABB
300
600
S5N400BW
S5N400BW
Limited Stock
From
Get Price
ABB
400
600
S5N400CW-2
S5N400CW-2
Limited Stock
From
Get Price
ABB
400
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.