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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
E21B090
E21B090
Limited Stock
From
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ITE
90
120
E21B090ASA
E21B090ASA
Limited Stock
From
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Siemens
90
120
E22S100A
E22S100A
Limited Stock
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ITE
100
240
E41B020LC
E41B020LC
Limited Stock
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ITE
20
277
E41B025LC
E41B025LC
Limited Stock
From
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Siemens
25
277
E41B030LC
E41B030LC
Limited Stock
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Siemens
30
277
E41B035LC
E41B035LC
Limited Stock
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Siemens
35
277
E41B080
E41B080
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Siemens
80
277
E41B090
E41B090
Limited Stock
From
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Siemens
90
277
E43B125
E43B125
Limited Stock
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Siemens
125
480
E43M015
E43M015
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ITE
15
480
E43M025
E43M025
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ITE
25
480
E43M035
E43M035
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Siemens
35
480
E43M045
E43M045
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Siemens
45
480
E43M050
E43M050
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ITE
50
480
E43M060
E43M060
Limited Stock
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ITE
60
480
E43M070
E43M070
Limited Stock
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ITE
70
480
E43M080
E43M080
Limited Stock
From
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ITE
80
480
E43M090
E43M090
Limited Stock
From
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ITE
90
480
E43M110
E43M110
Limited Stock
From
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Siemens
110
480
E43M125
E43M125
Limited Stock
From
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ITE
125
480
E4B3050
E4B3050
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Gould
30
480
E61B020
E61B020
Limited Stock
From
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ITE
20
600
E61B025
E61B025
Limited Stock
From
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ITE
25
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.