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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
BQD245
BQD245
In Stock
From
$77.16
Siemens
45
480
BQD250
BQD250
In Stock
From
$80.88
Siemens
50
480
BQD260
BQD260
In Stock
From
$80.88
Siemens
60
480
BQD270
BQD270
In Stock
From
$95.44
Siemens
70
480
BQD280
BQD280
In Stock
From
$122.17
Siemens
80
480
BQD33000S01
BQD33000S01
In Stock
From
$381.16
Siemens
30
480
BQD345
BQD345
In Stock
From
$197.05
Siemens
45
480
BQD6220
BQD6220
In Stock
From
$163.70
Siemens
20
600
BQD6230
BQD6230
In Stock
From
$169.64
Siemens
30
600
BQD6330
BQD6330
In Stock
From
$477.00
Siemens
30
600
BQD6340
BQD6340
In Stock
From
$323.28
Siemens
40
600
BQD6350
BQD6350
In Stock
From
$306.81
Siemens
50
600
BQD6360
BQD6360
In Stock
From
$314.36
Siemens
60
600
CFD63B125
CFD63B125
In Stock
From
$1,303.60
Siemens
125
600
CFD63B200
CFD63B200
In Stock
From
$2,081.66
Siemens
200
600
CFD63B225
CFD63B225
In Stock
From
$2,195.02
Siemens
225
600
CFD63B250
CFD63B250
In Stock
From
$3,110.12
Siemens
250
600
CJD63B400
CJD63B400
In Stock
From
$2,370.81
Siemens
400
600
CQD115
CQD115
In Stock
From
$88.24
Siemens
15
277
CQD220
CQD220
In Stock
From
$103.47
Siemens
20
480
ED21B020
ED21B020
In Stock
From
$31.27
Siemens
20
120
ED21B030
ED21B030
In Stock
From
$45.08
Siemens
30
120
ED42B015L
ED42B015L
In Stock
From
$329.19
Siemens
15
480
ED43B020L
ED43B020L
In Stock
From
$389.91
Siemens
20
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.