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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
SMD69800NT
SMD69800NT
Limited Stock
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Siemens
800
600
SND69100AGH
SND69100AGH
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Siemens
1000
600
SND69100ANGTH
SND69100ANGTH
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Siemens
1000
600
SND69100ANTH
SND69100ANTH
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Siemens
1000
600
SND69120AGH
SND69120AGH
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Siemens
1200
600
SND69800AG
SND69800AG
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Siemens
800
600
SND69800AGH
SND69800AGH
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Siemens
800
600
SND69800AH
SND69800AH
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Siemens
800
600
SND69800ANGTH
SND69800ANGTH
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Siemens
800
600
SND69800ANT
SND69800ANT
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Siemens
800
600
SND69800ANTH
SND69800ANTH
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Siemens
800
600
SND69800G
SND69800G
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Siemens
800
600
SND69900G
SND69900G
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Siemens
900
600
3VL4731-3DC36-0AA0
3VL4731-3DC36-0AA0
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Siemens
320
690
3VT3763-2AA36-0AA0
3VT3763-2AA36-0AA0
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Siemens
630
690
3VT4710-3AA30-0AA0
3VT4710-3AA30-0AA0
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Siemens
1000
690
5SJ4132-7HG41
5SJ4132-7HG41
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Siemens
32
240
5SJ4318-7HG41
5SJ4318-7HG41
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Siemens
15
240
5SU1356-7KV06
5SU1356-7KV06
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Siemens
6
400
5SX2125-5
5SX2125-5
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Siemens
25
400
5SX2125-8
5SX2125-8
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Siemens
25
400
5SX2140-7
5SX2140-7
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Siemens
40
400
5SX2208-7
5SX2208-7
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Siemens
8
400
5SX2316-8
5SX2316-8
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Siemens
16
400
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.