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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
HEG1B015L
HEG1B015L
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Siemens
15
600
HEG1B020
HEG1B020
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Siemens
20
600
HEG1B020B
HEG1B020B
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Siemens
20
600
HEG1B025
HEG1B025
Limited Stock
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Siemens
25
600
HEG1B025B
HEG1B025B
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Siemens
25
600
HEG1B030
HEG1B030
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Siemens
30
600
HEG1B030B
HEG1B030B
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Siemens
30
600
HEG1B030L
HEG1B030L
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Siemens
30
600
HEG1B035B
HEG1B035B
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Siemens
35
600
HEG1B035L
HEG1B035L
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Siemens
35
600
HEG1B040
HEG1B040
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Siemens
40
600
HEG1B040B
HEG1B040B
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Siemens
40
600
HEG1B050
HEG1B050
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Siemens
50
600
HEG1B050B
HEG1B050B
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Siemens
50
600
HEG1B050L
HEG1B050L
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Siemens
50
600
HEG1B060
HEG1B060
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Siemens
60
600
HEG1B060B
HEG1B060B
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Siemens
60
600
HEG1B060L
HEG1B060L
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Siemens
60
600
HEG1B070
HEG1B070
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Siemens
70
600
HEG1B070B
HEG1B070B
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Siemens
70
600
HEG1B070L
HEG1B070L
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Siemens
70
600
HEG1B080
HEG1B080
Limited Stock
From
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Siemens
80
600
HEG1B080B
HEG1B080B
Limited Stock
From
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Siemens
80
600
HEG1B080L
HEG1B080L
Limited Stock
From
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Siemens
80
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.