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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
QJ22B11000S01
QJ22B11000S01
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Siemens
110
240
QJ22B11000S07
QJ22B11000S07
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Siemens
110
240
QJ2B150
QJ2B150
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Siemens
150
240
QJ2H175
QJ2H175
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Siemens
175
240
QJH23B22501S07
QJH23B22501S07
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Siemens
225
240
QS2175HH
QS2175HH
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Siemens
175
240
QS2200HH
QS2200HH
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Siemens
200
240
QS2225HH
QS2225HH
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Siemens
225
240
QT2030
QT2030
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Siemens
30
240
SCLD69600NT
SCLD69600NT
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Siemens
600
600
SCMD6B800LI
SCMD6B800LI
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Siemens
800
600
SCMD6B800LSI
SCMD6B800LSI
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Siemens
800
600
SHMD69800ANGT
SHMD69800ANGT
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Siemens
800
600
SHND69120ANGT
SHND69120ANGT
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Siemens
1200
600
SHND6A120LI
SHND6A120LI
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Siemens
1200
600
SHND6B120LSI
SHND6B120LSI
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Siemens
1200
600
SHND6B120LSIG
SHND6B120LSIG
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Siemens
1200
600
SHPD69160NGT
SHPD69160NGT
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Siemens
1600
600
SND69120AGH
SND69120AGH
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Siemens
1200
600
5SU1356-1KK06
5SU1356-1KK06
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Siemens
6
400
B220HID
B220HID
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Siemens
20
240
3VA6340-6JQ31-0AA0
3VA6340-6JQ31-0AA0
Limited Stock
From
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Siemens
400
600
B115H00S07
B115H00S07
Limited Stock
From
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Siemens
15
240
B115HH00S01
B115HH00S01
Limited Stock
From
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Siemens
15
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.