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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
3VT1792-2EC46-0AA0
3VT1792-2EC46-0AA0
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Siemens
-
-
3VT2725-3AA46-0AA0
3VT2725-3AA46-0AA0
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Siemens
-
-
3VT3763-3AA46-0AA0
3VT3763-3AA46-0AA0
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Siemens
-
-
3VU1300-2MG00
3VU1300-2MG00
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$65.22
Siemens
-
-
3VU1301-1ML00
3VU1301-1ML00
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-
-
3WL1106-2DG32-1AA2
3WL1106-2DG32-1AA2
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-
-
3WL1106-3CB34-4GN4-Z
3WL1106-3CB34-4GN4-Z
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-
3WL1106-4CB46-1AA2Z
3WL1106-4CB46-1AA2Z
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Siemens
-
-
3WL1108-2BB71-4GA2-Z
3WL1108-2BB71-4GA2-Z
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Siemens
-
-
3WL1108-2EG45-1AA2
3WL1108-2EG45-1AA2
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Siemens
-
-
3WL1110-2BB34-4AN4
3WL1110-2BB34-4AN4
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Siemens
-
-
3WL1112-4CB35-1AA2
3WL1112-4CB35-1AA2
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Siemens
-
-
5+B499:B535SY6632-7
5+B499:B535SY6632-7
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Siemens
32
400
5SL6515-7
5SL6515-7
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Siemens
15
400
5SL6606-7
5SL6606-7
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Siemens
6
400
5SN2-701
5SN2-701
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Siemens
1
415
E2B3030
E2B3030
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ITE
30
240
E2B3060
E2B3060
In Stock
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Siemens
60
240
HEG3B045
HEG3B045
In Stock
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Siemens
45
600
HF2B015
HF2B015
In Stock
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Siemens
15
600
SHND6A100LSIGH
SHND6A100LSIGH
In Stock
From
$8,543.23
Siemens
1000
600
3RV1083-7JL10
3RV1083-7JL10
Limited Stock
From
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Siemens
-
-
3RV2142-4RA10
3RV2142-4RA10
In Stock
From
$1,206.35
Siemens
-
-
3VA4110-5ED24-0AA0
3VA4110-5ED24-0AA0
In Stock
From
$434.14
Siemens
100
250
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.