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
E23B040
E23B040
In Stock
From
$61.77
ITE
40
240
E23B045
E23B045
In Stock
From
$93.79
ITE
45
240
E23B050
E23B050
In Stock
From
$77.24
Siemens
50
240
E23B060
E23B060
In Stock
From
$201.35
Siemens
60
240
E23B070
E23B070
In Stock
From
$36.29
Siemens
70
240
E23B080
E23B080
In Stock
From
$96.01
Siemens
80
240
E23B090
E23B090
In Stock
From
$37.30
Siemens
90
240
E23B100
E23B100
In Stock
From
$93.77
ITE
100
240
E2B3090
E2B3090
In Stock
From
$162.71
Siemens
90
240
E2B3100
E2B3100
In Stock
From
$67.24
Siemens
100
240
E41B035
E41B035
In Stock
From
$117.07
Siemens
35
277
E41B045
E41B045
In Stock
From
$11.01
Siemens
45
277
E41B060
E41B060
In Stock
From
$48.55
Siemens
60
277
E41B070
E41B070
In Stock
From
$47.08
ITE
70
277
E41B100
E41B100
In Stock
From
$23.60
ITE
100
277
E42B020
E42B020
In Stock
From
$211.22
Siemens
20
480
E42B025
E42B025
In Stock
From
$94.21
ITE
25
480
E42B040
E42B040
In Stock
From
$137.27
Siemens
40
480
E42B045
E42B045
In Stock
From
$187.99
Siemens
45
480
E42B050
E42B050
In Stock
From
$147.07
ITE
50
480
E42B060
E42B060
In Stock
From
$162.11
ITE
60
480
E42B070
E42B070
In Stock
From
$127.22
Siemens
70
480
E42B080
E42B080
In Stock
From
$154.49
Siemens
80
480
E42B090
E42B090
In Stock
From
$121.76
ITE
90
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.