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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
B215R00S07
B215R00S07
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Siemens
15
240
B220R00S01
B220R00S01
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Siemens
20
240
B220R00S07
B220R00S07
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Siemens
20
240
B22500S07
B22500S07
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Siemens
25
240
B225H00S01
B225H00S01
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Siemens
25
240
B225H00S07
B225H00S07
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Siemens
25
240
B225R
B225R
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Siemens
25
240
B225R00S07
B225R00S07
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Siemens
25
240
B23000S07
B23000S07
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Siemens
30
240
B230HH00S01
B230HH00S01
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Siemens
30
240
B230HID
B230HID
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Siemens
30
240
B230R
B230R
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Siemens
30
240
B230R00S07
B230R00S07
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Siemens
30
240
B23500S07
B23500S07
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Siemens
35
240
B235R
B235R
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Siemens
35
240
B235R00S07
B235R00S07
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Siemens
35
240
B240H00S07
B240H00S07
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Siemens
40
240
B240HH00S01
B240HH00S01
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Siemens
40
240
B240R
B240R
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Siemens
40
240
B240R00S07
B240R00S07
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Siemens
40
240
B24500S01
B24500S01
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Siemens
45
240
B24500S07
B24500S07
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Siemens
45
240
B245H00S01
B245H00S01
Limited Stock
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Siemens
45
240
B245R
B245R
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From
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Siemens
45
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.