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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
ED21B090MX
ED21B090MX
Limited Stock
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Siemens
90
120
ED21B100MX
ED21B100MX
Limited Stock
From
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Siemens
100
120
ED21M015
ED21M015
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Siemens
15
120
ED21M015L
ED21M015L
Limited Stock
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Siemens
15
120
ED21M020
ED21M020
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Siemens
20
120
ED21M020L
ED21M020L
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Siemens
20
120
ED21M025
ED21M025
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Siemens
25
120
ED21M025L
ED21M025L
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Siemens
25
120
ED21M030
ED21M030
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Siemens
30
120
ED21M030L
ED21M030L
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Siemens
30
120
ED21M035
ED21M035
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Siemens
35
120
ED21M035L
ED21M035L
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Siemens
35
120
ED21M040
ED21M040
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Siemens
40
120
ED21M040L
ED21M040L
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Siemens
40
120
ED21M045
ED21M045
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Siemens
45
120
ED21M045L
ED21M045L
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Siemens
45
120
ED21M050
ED21M050
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Siemens
50
120
ED21M050L
ED21M050L
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Siemens
50
120
ED21M060
ED21M060
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Siemens
60
120
ED21M060L
ED21M060L
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Siemens
60
120
ED21M070
ED21M070
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Siemens
70
120
ED21M070L
ED21M070L
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Siemens
70
120
ED21M080
ED21M080
Limited Stock
From
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Siemens
80
120
ED21M080L
ED21M080L
Limited Stock
From
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Siemens
80
120
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.