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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.
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Part Number
PRICE
Manufacturer
Amperage
Voltage
BJ3225NA
BJ3225NA
Limited Stock
From
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Westinghouse
225
240
BJA36100YP
BJA36100YP
Limited Stock
From
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Square D
100
600
BQ2B050HST1
BQ2B050HST1
Limited Stock
From
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Siemens
-
240
BQ2B050ST1
BQ2B050ST1
Limited Stock
From
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Siemens
-
240
BQ2B060ST1
BQ2B060ST1
Limited Stock
From
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Siemens
-
240
BQ2B10000SO1
BQ2B10000SO1
Limited Stock
From
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Siemens
100
240
BR115GFI
BR115GFI
Limited Stock
From
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Westinghouse
15
120
BRD215215
BRD215215
Limited Stock
From
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Cutler Hammer
15
240
BU-ESA2020
BU-ESA2020
Limited Stock
From
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Fuji Electric
20
480
BUECA2040
BUECA2040
Limited Stock
From
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Fuji Electric
40
240
BUECA2060
BUECA2060
Limited Stock
From
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Fuji Electric
60
240
BUECA2080
BUECA2080
Limited Stock
From
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Fuji Electric
80
240
BUECA2100
BUECA2100
Limited Stock
From
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Fuji Electric
100
240
BUECA3080
BUECA3080
Limited Stock
From
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Fuji Electric
80
240
BUESA2040
BUESA2040
Limited Stock
From
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Fuji Electric
40
480
BUESA2050
BUESA2050
Limited Stock
From
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Fuji Electric
50
480
BUESA2060
BUESA2060
Limited Stock
From
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Fuji Electric
60
480
BUESA2070
BUESA2070
Limited Stock
From
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Fuji Electric
70
480
BUESA2080
BUESA2080
Limited Stock
From
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Fuji Electric
80
480
BUESA2090
BUESA2090
Limited Stock
From
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Fuji Electric
90
480
BUESA2100
BUESA2100
Limited Stock
From
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Fuji Electric
100
480
BUJSA2150
BUJSA2150
Limited Stock
From
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Fuji Electric
150
600
BUJSA3125
BUJSA3125
Limited Stock
From
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Fuji Electric
125
600
BUJSA3150
BUJSA3150
Limited Stock
From
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Fuji Electric
150
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.