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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
Q14501
Q14501
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Siemens
45
120
Q145HH00S01
Q145HH00S01
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Siemens
45
120
Q15001
Q15001
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Siemens
50
120
Q16001
Q16001
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Siemens
60
120
Q160HH00S01
Q160HH00S01
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Siemens
60
120
Q17001
Q17001
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Siemens
70
120
Q170HH00S01
Q170HH00S01
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Siemens
70
120
Q21001
Q21001
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Siemens
10
240
Q2100R00S01
Q2100R00S01
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Siemens
100
240
Q211001
Q211001
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Siemens
110
240
Q2110HH00S01
Q2110HH00S01
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Siemens
110
240
Q212501
Q212501
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Siemens
125
240
Q215R00S01
Q215R00S01
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Siemens
15
240
Q22000S07
Q22000S07
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Siemens
20
240
Q22001
Q22001
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Siemens
20
240
Q2200BH
Q2200BH
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Siemens
200
240
Q22020NC
Q22020NC
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Siemens
20
240
Q22040CT2
Q22040CT2
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Siemens
20
240
Q220HH00S01
Q220HH00S01
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Siemens
20
240
Q220R
Q220R
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Siemens
20
240
Q220R00S01
Q220R00S01
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Siemens
20
240
Q22500S01
Q22500S01
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Siemens
25
240
Q22501
Q22501
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From
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Siemens
25
240
Q225HH00S01
Q225HH00S01
Limited Stock
From
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Siemens
25
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.