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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
SHND6B120LI
SHND6B120LI
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Siemens
1200
600
SHND6B120LIG
SHND6B120LIG
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Siemens
1200
600
SHND6B120LIGH
SHND6B120LIGH
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Siemens
1200
600
SHND6B120LIH
SHND6B120LIH
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Siemens
1200
600
SHND6B800LI
SHND6B800LI
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Siemens
800
600
SHND6B800LIG
SHND6B800LIG
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Siemens
800
600
SHND6B800LIGH
SHND6B800LIGH
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Siemens
800
600
SHND6B800LIH
SHND6B800LIH
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Siemens
800
600
SHND6B800LSI
SHND6B800LSI
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Siemens
800
600
SHND6B800LSIG
SHND6B800LSIG
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Siemens
800
600
SHND6B800LSIH
SHND6B800LSIH
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Siemens
800
600
SMD6A600LI
SMD6A600LI
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Siemens
600
600
SMD6A600LIG
SMD6A600LIG
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Siemens
600
600
SMD6A600LIGH
SMD6A600LIGH
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Siemens
600
600
SMD6A600LIH
SMD6A600LIH
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Siemens
600
600
SMD6A600LSIG
SMD6A600LSIG
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Siemens
600
600
SMD6A600LSIGH
SMD6A600LSIGH
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Siemens
600
600
SMD6A600LSIH
SMD6A600LSIH
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Siemens
600
600
SMD6A700LI
SMD6A700LI
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Siemens
700
600
SMD6A700LIG
SMD6A700LIG
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Siemens
700
600
SMD6A700LIGH
SMD6A700LIGH
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Siemens
700
600
SMD6A700LIH
SMD6A700LIH
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From
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Siemens
700
600
SMD6A700LSI
SMD6A700LSI
Limited Stock
From
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Siemens
700
600
SMD6A700LSIG
SMD6A700LSIG
Limited Stock
From
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Siemens
700
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.