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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
ED21B100NAV
ED21B100NAV
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Siemens
100
120
ED22B015NAV
ED22B015NAV
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Siemens
15
240
ED22B020NAV
ED22B020NAV
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Siemens
20
240
ED22B025NAV
ED22B025NAV
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Siemens
25
240
ED22B030NAV
ED22B030NAV
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Siemens
30
240
ED22B035NAV
ED22B035NAV
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Siemens
35
240
ED22B040NAV
ED22B040NAV
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Siemens
40
240
ED22B045NAV
ED22B045NAV
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Siemens
45
240
ED22B050NAV
ED22B050NAV
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Siemens
50
240
ED22B060NAV
ED22B060NAV
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Siemens
60
240
ED22B070NAV
ED22B070NAV
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Siemens
70
240
ED22B080NAV
ED22B080NAV
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Siemens
80
240
ED22B090NAV
ED22B090NAV
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Siemens
90
240
ED22B100NAV
ED22B100NAV
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Siemens
100
240
ED23B015NAV
ED23B015NAV
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From
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Siemens
15
240
ED23B020NAV
ED23B020NAV
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From
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Siemens
20
240
ED23B025NAV
ED23B025NAV
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From
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Siemens
25
240
ED23B030NAV
ED23B030NAV
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From
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Siemens
30
240
ED23B035NAV
ED23B035NAV
Limited Stock
From
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Siemens
35
240
ED23B040NAV
ED23B040NAV
Limited Stock
From
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Siemens
40
240
ED23B045NAV
ED23B045NAV
Limited Stock
From
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Siemens
45
240
ED23B050NAV
ED23B050NAV
Limited Stock
From
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Siemens
50
240
ED23B060NAV
ED23B060NAV
Limited Stock
From
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Siemens
60
240
ED23B070NAV
ED23B070NAV
Limited Stock
From
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Siemens
70
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.