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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
5SX2103-7
5SX2103-7
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Siemens
3
400
5SX2208-8
5SX2208-8
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Siemens
8
400
5SX2225-6
5SX2225-6
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From
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Siemens
25
400
5SX2232-7
5SX2232-7
Limited Stock
From
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Siemens
32
400
5SX2263-7
5SX2263-7
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Siemens
63
400
5SX4306-7
5SX4306-7
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Siemens
6
400
HDG3B150
HDG3B150
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From
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Siemens
150
600
HEG1B035
HEG1B035
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Siemens
35
600
HFG3C250
HFG3C250
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Siemens
250
600
HLX3B600
HLX3B600
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Siemens
600
600
HMY3N600L
HMY3N600L
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Siemens
600
600
HNH4P800
HNH4P800
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Siemens
800
600
HNH4X800
HNH4X800
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Siemens
800
600
HPG3X160
HPG3X160
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Siemens
1600
600
KM2F800
KM2F800
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ITE
800
600
LJG2F400
LJG2F400
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From
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Siemens
400
600
NDG3B110L
NDG3B110L
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Siemens
110
600
NFG2B225L
NFG2B225L
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Siemens
225
600
NNX2C900
NNX2C900
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Siemens
900
600
NPY3P160
NPY3P160
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Siemens
1600
600
QJ22B040
QJ22B040
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From
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Siemens
40
240
QR22B225L
QR22B225L
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From
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Siemens
225
240
SND6B120LSI
SND6B120LSI
Limited Stock
From
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Siemens
1200
600
VL1250-3P
VL1250-3P
Limited Stock
From
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Siemens
1250
690
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.