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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
BQ3B015H
BQ3B015H
In Stock
From
$115.03
Siemens
15
240
BQ3B015H00S01
BQ3B015H00S01
In Stock
From
$155.68
Siemens
15
240
BQ3B015L
BQ3B015L
In Stock
From
$181.24
Siemens
15
240
BQ3B020L
BQ3B020L
In Stock
From
$159.70
Siemens
20
240
BQ3B02500S01
BQ3B02500S01
In Stock
From
$183.95
Siemens
25
240
BQ3B03500S01
BQ3B03500S01
In Stock
From
$229.04
Siemens
35
240
BQ3B040H
BQ3B040H
In Stock
From
$169.41
Siemens
40
240
BQ3B045L
BQ3B045L
In Stock
From
$120.49
Siemens
45
240
BQ3B06000S01
BQ3B06000S01
In Stock
From
$302.99
Siemens
60
240
BQ3B060L
BQ3B060L
In Stock
From
$313.11
Siemens
60
240
BQ3B070H
BQ3B070H
In Stock
From
$232.66
Siemens
70
240
BQ3B070L
BQ3B070L
In Stock
From
$378.43
Siemens
70
240
BQ3B100H
BQ3B100H
In Stock
From
$136.16
Siemens
100
240
BQ3B100L
BQ3B100L
In Stock
From
$544.97
Siemens
100
240
BQD335
BQD335
In Stock
From
$300.72
Siemens
35
480
BQD34000S01
BQD34000S01
In Stock
From
$449.55
Siemens
40
480
BQD6160
BQD6160
Limited Stock
From
Get Price
Siemens
60
347
BQD6215
BQD6215
In Stock
From
$202.99
Siemens
15
600
BQD6315
BQD6315
In Stock
From
$408.41
Siemens
15
600
BQD6320
BQD6320
In Stock
From
$331.81
Siemens
20
600
CED63B015
CED63B015
In Stock
From
$603.41
Siemens
15
600
CED63B020
CED63B020
In Stock
From
$388.23
Siemens
20
600
CED63B050L
CED63B050L
In Stock
From
$491.43
Siemens
50
600
CED63B125
CED63B125
In Stock
From
$1,364.25
Siemens
125
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.