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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
BQ2B02000S01
BQ2B02000S01
In Stock
From
$70.07
Siemens
20
240
BQ2B020H
BQ2B020H
In Stock
From
$104.44
Siemens
20
240
BQ2B030
BQ2B030
In Stock
From
$43.73
Siemens
30
240
BQ2B040
BQ2B040
In Stock
From
$16.82
Siemens
40
240
BQ2B050
BQ2B050
In Stock
From
$43.31
Siemens
50
240
BQ2B06000S01
BQ2B06000S01
In Stock
From
$50.30
Siemens
60
240
BQ2B090
BQ2B090
In Stock
From
$82.67
Siemens
90
240
BQ3B015
BQ3B015
In Stock
From
$249.51
Siemens
15
240
BQ3B025
BQ3B025
In Stock
From
$145.55
Siemens
25
240
BQ3B030
BQ3B030
In Stock
From
$51.09
Siemens
30
240
BQ3B035
BQ3B035
In Stock
From
$159.49
Siemens
35
240
BQ3B050
BQ3B050
In Stock
From
$51.89
Siemens
50
240
BQ3B070
BQ3B070
In Stock
From
$304.02
Siemens
70
240
BQ3B080
BQ3B080
In Stock
From
$161.35
Siemens
80
240
BQ3B100
BQ3B100
In Stock
From
$158.22
Siemens
100
240
BQD115
BQD115
In Stock
From
$32.27
Siemens
15
277
BQD120
BQD120
In Stock
From
$26.89
Siemens
20
277
BQD140
BQD140
In Stock
From
$44.86
Siemens
40
277
BQD145
BQD145
In Stock
From
$53.11
Siemens
45
277
BQD160
BQD160
In Stock
From
$70.20
Siemens
60
277
BQD170
BQD170
In Stock
From
$87.56
Siemens
70
277
BQD180
BQD180
In Stock
From
$47.96
Siemens
80
277
BQD190
BQD190
In Stock
From
$99.91
Siemens
90
277
BQD2100
BQD2100
In Stock
From
$87.54
ITE
100
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.