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
ED41M025L
ED41M025L
Limited Stock
From
Get Price
Siemens
25
120
ED41M030L
ED41M030L
Limited Stock
From
Get Price
Siemens
30
120
ED41M035
ED41M035
Limited Stock
From
Get Price
Siemens
35
120
ED41M035L
ED41M035L
Limited Stock
From
Get Price
Siemens
35
120
ED41M040
ED41M040
Limited Stock
From
Get Price
Siemens
40
120
ED41M040L
ED41M040L
Limited Stock
From
Get Price
Siemens
40
120
ED41M045
ED41M045
Limited Stock
From
Get Price
Siemens
45
120
ED41M045L
ED41M045L
Limited Stock
From
Get Price
Siemens
45
120
ED41M050
ED41M050
Limited Stock
From
Get Price
Siemens
50
120
ED41M050L
ED41M050L
Limited Stock
From
Get Price
Siemens
50
120
ED41M060
ED41M060
Limited Stock
From
Get Price
Siemens
60
120
ED41M060L
ED41M060L
Limited Stock
From
Get Price
Siemens
60
120
ED41M070
ED41M070
Limited Stock
From
Get Price
Siemens
70
120
ED41M070L
ED41M070L
Limited Stock
From
Get Price
Siemens
70
120
ED41M080
ED41M080
Limited Stock
From
Get Price
Siemens
80
120
ED41M080L
ED41M080L
Limited Stock
From
Get Price
Siemens
80
120
ED41M090
ED41M090
Limited Stock
From
Get Price
Siemens
90
120
ED41M090L
ED41M090L
Limited Stock
From
Get Price
Siemens
90
120
ED41M100
ED41M100
Limited Stock
From
Get Price
Siemens
100
120
ED41M100L
ED41M100L
Limited Stock
From
Get Price
Siemens
100
120
ED42B020MX
ED42B020MX
Limited Stock
From
Get Price
Siemens
20
480
ED42B030MX
ED42B030MX
Limited Stock
From
Get Price
Siemens
30
480
ED42B040MX
ED42B040MX
Limited Stock
From
Get Price
Siemens
40
480
ED42B060MX
ED42B060MX
Limited Stock
From
Get Price
Siemens
60
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.