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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
ED43B035
ED43B035
In Stock
From
$404.23
Siemens
35
480
ED43B045
ED43B045
In Stock
From
$343.04
Siemens
45
480
ED43B050
ED43B050
In Stock
From
$308.83
Siemens
50
480
ED43B050L
ED43B050L
In Stock
From
$442.73
Siemens
50
480
ED43B070
ED43B070
In Stock
From
$323.28
Siemens
70
480
ED43B090
ED43B090
In Stock
From
$267.39
Siemens
90
480
ED43B100
ED43B100
In Stock
From
$301.43
Siemens
100
480
ED61B015
ED61B015
In Stock
From
$826.34
Siemens
15
600
ED62B020
ED62B020
In Stock
From
$239.26
Siemens
20
600
ED62B020L
ED62B020L
In Stock
From
$514.84
Siemens
20
600
ED63A001
ED63A001
In Stock
From
$381.99
Siemens
1
600
ED63A002
ED63A002
In Stock
From
$412.55
Siemens
2
600
ED63A010
ED63A010
In Stock
From
$477.81
Siemens
10
600
ED63A025
ED63A025
In Stock
From
$615.68
Siemens
25
600
ED63A030
ED63A030
In Stock
From
$514.68
Siemens
30
600
ED63A040
ED63A040
In Stock
From
$546.20
Siemens
40
600
ED63B015L
ED63B015L
In Stock
From
$420.55
Siemens
15
600
ED63B020L
ED63B020L
In Stock
From
$440.60
Siemens
20
600
ED63B040
ED63B040
In Stock
From
$333.25
Siemens
40
600
ED63B040L
ED63B040L
In Stock
From
$445.03
Siemens
40
600
ED63B060
ED63B060
In Stock
From
$444.67
Siemens
60
600
ED63B060L
ED63B060L
In Stock
From
$439.94
Siemens
60
600
ED63B070
ED63B070
In Stock
From
$313.88
Siemens
70
600
ED63B090L
ED63B090L
In Stock
From
$315.97
Siemens
90
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.