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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
E43A025
E43A025
In Stock
From
$116.14
ITE
25
480
E43A030
E43A030
In Stock
From
$155.88
ITE
30
480
E43B015
E43B015
In Stock
From
$122.07
Siemens
15
480
E43B030
E43B030
In Stock
From
$193.82
Siemens
30
480
E43B040
E43B040
In Stock
From
$189.52
Siemens
40
480
E43B080
E43B080
In Stock
From
$174.48
Siemens
80
480
E43B090
E43B090
In Stock
From
$130.18
Siemens
90
480
E43M030
E43M030
In Stock
From
$124.18
ITE
30
480
E43M100
E43M100
In Stock
From
$185.36
Siemens
100
480
E63A010
E63A010
In Stock
From
$333.89
Siemens
-
-
E63A040
E63A040
In Stock
From
$165.14
Siemens
40
600
E63B030
E63B030
In Stock
From
$337.60
ITE
30
600
E63B040
E63B040
In Stock
From
$150.95
Siemens
-
-
E63B060
E63B060
In Stock
From
$268.68
Siemens
60
600
E63B080
E63B080
In Stock
From
$174.86
Siemens
80
600
EE1H020
EE1H020
In Stock
From
$32.64
Siemens
20
120
EE3A003
EE3A003
In Stock
From
$170.10
ITE
3
240
EF2B015
EF2B015
In Stock
From
$31.27
ITE
15
600
EF2B020
EF2B020
In Stock
From
$363.36
Siemens
20
600
EF2B035L
EF2B035L
In Stock
From
$114.13
Siemens
35
600
EF2B040
EF2B040
In Stock
From
$367.01
Siemens
40
600
EF2B070
EF2B070
In Stock
From
$372.93
ITE
70
600
EF2B100
EF2B100
In Stock
From
$476.67
Siemens
100
600
EF3A003
EF3A003
In Stock
From
$67.30
Siemens
3
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.