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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
CQD330
CQD330
In Stock
From
$158.64
Siemens
30
480
CQD335
CQD335
In Stock
From
$224.27
Siemens
35
480
CQD345
CQD345
In Stock
From
$587.53
Siemens
45
480
CQD350
CQD350
In Stock
From
$137.42
Siemens
50
480
CQD390
CQD390
In Stock
From
$177.55
Siemens
90
480
CQD6235
CQD6235
In Stock
From
$346.48
Siemens
35
600
CQD6315
CQD6315
In Stock
From
$608.67
Siemens
15
600
CQD6320
CQD6320
In Stock
From
$528.36
Siemens
20
600
CQD6330
CQD6330
In Stock
From
$743.60
Siemens
30
600
CQD6340
CQD6340
In Stock
From
$132.10
Siemens
40
600
E1SED22B015
E1SED22B015
In Stock
From
$962.53
Siemens
15
240
E1SED22B020
E1SED22B020
In Stock
From
$962.53
Siemens
20
240
E1SED43B080
E1SED43B080
In Stock
From
$2,082.62
Siemens
80
480
ED22B020
ED22B020
In Stock
From
$136.56
Siemens
20
240
ED22B020L
ED22B020L
In Stock
From
$88.78
Siemens
20
240
ED22B030
ED22B030
In Stock
From
$1,198.37
Siemens
30
240
ED22B050
ED22B050
In Stock
From
$210.57
Siemens
50
240
ED22B070
ED22B070
In Stock
From
$90.19
Siemens
70
240
ED22B070L
ED22B070L
In Stock
From
$247.39
Siemens
70
240
ED23B015L
ED23B015L
In Stock
From
$107.92
Siemens
15
240
ED23B020L
ED23B020L
In Stock
From
$247.39
Siemens
20
240
ED23B030L
ED23B030L
In Stock
From
$296.56
Siemens
30
240
ED23B040L
ED23B040L
In Stock
From
$231.16
Siemens
40
240
ED23B070L
ED23B070L
In Stock
From
$346.63
Siemens
70
240
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.