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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
B325H00S01
B325H00S01
In Stock
From
$156.42
Siemens
25
240
B325HH00S01
B325HH00S01
In Stock
From
Get Price
Siemens
25
240
B335H00S01
B335H00S01
In Stock
From
$124.68
Siemens
35
240
B335HH00S01
B335HH00S01
In Stock
From
$162.50
Siemens
35
240
B380HH00S01
B380HH00S01
In Stock
From
$399.25
Siemens
80
240
B390HH00S01
B390HH00S01
In Stock
From
$711.26
Siemens
90
240
BQ1B025H
BQ1B025H
In Stock
From
$50.03
Siemens
25
120
BQ1B030H
BQ1B030H
In Stock
From
$58.62
Siemens
30
120
BQ1B035H
BQ1B035H
In Stock
From
$71.54
Siemens
35
120
BQ1B060H
BQ1B060H
In Stock
From
$49.97
Siemens
60
120
BQ3B020Y
BQ3B020Y
In Stock
From
$137.16
Siemens
20
120
BQD1100
BQD1100
In Stock
From
$60.87
Siemens
100
277
BQD6140
BQD6140
In Stock
From
$76.32
Siemens
40
347
BQD6145
BQD6145
In Stock
From
$51.35
Siemens
45
347
BQD6150
BQD6150
In Stock
From
$61.19
Siemens
50
347
BQD6235
BQD6235
In Stock
From
$114.15
Siemens
35
600
BQD6245
BQD6245
In Stock
From
$232.97
Siemens
45
600
BQD6250
BQD6250
In Stock
From
$165.03
Siemens
50
600
BQD6270
BQD6270
In Stock
From
$295.60
Siemens
70
600
CQD6225
CQD6225
In Stock
From
$172.55
Siemens
25
600
CQD6335
CQD6335
In Stock
From
$323.06
Siemens
35
600
CQD6350
CQD6350
In Stock
From
$339.52
Siemens
50
600
CQD6360
CQD6360
Limited Stock
From
Get Price
Siemens
60
600
HB3B040
HB3B040
In Stock
From
$369.76
Siemens
40
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.