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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
EF3H020
EF3H020
Limited Stock
From
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ITE
20
600
EF3H020L
EF3H020L
Limited Stock
From
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ITE
20
600
EF3H025
EF3H025
Limited Stock
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ITE
25
600
EF3H025L
EF3H025L
Limited Stock
From
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ITE
25
600
EF3H030
EF3H030
Limited Stock
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ITE
30
600
EF3H030L
EF3H030L
Limited Stock
From
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Siemens
30
600
EF3H035
EF3H035
Limited Stock
From
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Siemens
35
600
EF3H035L
EF3H035L
Limited Stock
From
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ITE
35
600
EF3H040
EF3H040
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ITE
40
600
EF3H040L
EF3H040L
Limited Stock
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ITE
40
600
EF3H045
EF3H045
Limited Stock
From
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Siemens
45
600
EF3H045L
EF3H045L
Limited Stock
From
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ITE
45
600
EF3H050L
EF3H050L
Limited Stock
From
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Siemens
50
600
EF3H060
EF3H060
Limited Stock
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Siemens
60
600
EF3H060L
EF3H060L
Limited Stock
From
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Siemens
60
600
EF3H070
EF3H070
Limited Stock
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Siemens
70
600
EF3H070L
EF3H070L
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From
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ITE
70
600
EF3H080
EF3H080
Limited Stock
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ITE
80
600
EF3H080L
EF3H080L
Limited Stock
From
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Siemens
80
600
EF3H090
EF3H090
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Siemens
90
600
EF3H090L
EF3H090L
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From
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ITE
90
600
EF3H100
EF3H100
Limited Stock
From
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Siemens
100
600
EF3H100L
EF3H100L
Limited Stock
From
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ITE
100
600
EF3H110
EF3H110
Limited Stock
From
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ITE
110
600
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.