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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
EF3H110L
EF3H110L
Limited Stock
From
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Siemens
110
600
EF3H125
EF3H125
Limited Stock
From
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ITE
125
600
EF3H125L
EF3H125L
Limited Stock
From
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Siemens
125
600
EF3H150L
EF3H150L
Limited Stock
From
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ITE
150
600
EF3L003
EF3L003
Limited Stock
From
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ITE
3
600
EF3L003L
EF3L003L
Limited Stock
From
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ITE
3
600
EF3L005
EF3L005
Limited Stock
From
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ITE
5
600
EF3L005L
EF3L005L
Limited Stock
From
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Siemens
5
600
EF3L010
EF3L010
Limited Stock
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ITE
10
600
EF3L010L
EF3L010L
Limited Stock
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ITE
10
600
EF3L015
EF3L015
Limited Stock
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ITE
15
600
EF3L015L
EF3L015L
Limited Stock
From
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ITE
15
600
EF3L020
EF3L020
Limited Stock
From
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Siemens
20
600
EF3L020L
EF3L020L
Limited Stock
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Siemens
20
600
EF3L025
EF3L025
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ITE
25
600
EF3L025L
EF3L025L
Limited Stock
From
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Siemens
25
600
EF3L030
EF3L030
Limited Stock
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Siemens
30
600
EF3L030L
EF3L030L
Limited Stock
From
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Siemens
30
600
EF3L035
EF3L035
Limited Stock
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ITE
35
600
EF3L035L
EF3L035L
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ITE
35
600
EF3L040
EF3L040
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From
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ITE
40
600
EF3L040L
EF3L040L
Limited Stock
From
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Siemens
40
600
EF3L045
EF3L045
Limited Stock
From
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ITE
45
600
EF3L045L
EF3L045L
Limited Stock
From
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Siemens
45
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.