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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
HEB2M110B
HEB2M110B
Limited Stock
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Siemens
110
600
HEB2M110L
HEB2M110L
Limited Stock
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Siemens
110
600
HEB2M125
HEB2M125
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Siemens
125
600
HEB2M125B
HEB2M125B
Limited Stock
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Siemens
125
600
HEB2M125L
HEB2M125L
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Siemens
125
600
HEB3B025B
HEB3B025B
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Siemens
25
600
HEB3B025L
HEB3B025L
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Siemens
25
600
HEB3B030L
HEB3B030L
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Siemens
30
600
HEB3B035L
HEB3B035L
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Siemens
35
600
HEB3B045
HEB3B045
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Siemens
45
600
HEB3B050L
HEB3B050L
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Siemens
50
600
HEB3B080L
HEB3B080L
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Siemens
80
600
HEB3B090L
HEB3B090L
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Siemens
90
600
HEB3B100L
HEB3B100L
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Siemens
100
600
HEB3B110L
HEB3B110L
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Siemens
110
600
HEB3B125L
HEB3B125L
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Siemens
125
600
HEB3M015
HEB3M015
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Siemens
15
600
HEB3M015B
HEB3M015B
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Siemens
15
600
HEB3M015L
HEB3M015L
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Siemens
15
600
HEB3M020
HEB3M020
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Siemens
20
600
HEB3M020B
HEB3M020B
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Siemens
20
600
HEB3M020L
HEB3M020L
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From
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Siemens
20
600
HEB3M025
HEB3M025
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From
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Siemens
25
600
HEB3M025B
HEB3M025B
Limited Stock
From
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Siemens
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.