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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
Q135H00S07
Q135H00S07
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Siemens
35
120
Q135H01
Q135H01
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Siemens
35
120
Q150H01
Q150H01
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Siemens
50
120
Q2020AFCP
Q2020AFCP
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Siemens
20
240
Q2125HH00S07
Q2125HH00S07
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Siemens
125
240
Q2125HH01
Q2125HH01
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Siemens
125
240
Q215H00S01
Q215H00S01
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Siemens
15
240
Q215H00S07
Q215H00S07
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Siemens
15
240
Q215H01
Q215H01
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Siemens
15
240
Q215HH00S07
Q215HH00S07
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Siemens
15
240
Q215HH01
Q215HH01
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Siemens
15
240
Q240H01
Q240H01
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Siemens
40
240
Q240HH01
Q240HH01
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Siemens
40
240
Q27000S07
Q27000S07
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Siemens
70
240
Q28000S07
Q28000S07
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Siemens
80
240
Q29000S07
Q29000S07
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Siemens
90
240
Q290H00S07
Q290H00S07
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Siemens
90
240
Q290HH00S07
Q290HH00S07
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Siemens
90
240
Q31500S07
Q31500S07
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Siemens
15
240
Q320H00S07
Q320H00S07
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Siemens
20
240
Q32500S07
Q32500S07
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Siemens
25
240
Q330H00S07
Q330H00S07
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Siemens
30
240
Q330H01
Q330H01
Limited Stock
From
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Siemens
30
240
Q330HH00S07
Q330HH00S07
Limited Stock
From
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Siemens
30
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.