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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.
SORT BY
Part Number
PRICE
Manufacturer
Amperage
Voltage
RLM3150
RLM3150
In Stock
From
$520.51
Westinghouse
150
600
RLM3150L
RLM3150L
In Stock
From
$520.51
Westinghouse
150
600
RLM3175
RLM3175
In Stock
From
$696.88
Westinghouse
175
600
RLM3175L
RLM3175L
In Stock
From
$696.88
Westinghouse
175
600
RLM3200
RLM3200
In Stock
From
$689.38
Westinghouse
200
600
RLM3200L
RLM3200L
In Stock
From
$689.38
Westinghouse
200
600
RLM3225
RLM3225
In Stock
From
$722.00
Westinghouse
225
600
RLM3225L
RLM3225L
In Stock
From
$722.00
Westinghouse
225
600
RLM3250
RLM3250
In Stock
From
$1,248.94
Westinghouse
250
600
RLM3250L
RLM3250L
In Stock
From
$1,248.94
Westinghouse
250
600
RLM3275L
RLM3275L
In Stock
From
$2,123.10
Westinghouse
275
600
RLM3300
RLM3300
In Stock
From
$1,804.35
Westinghouse
300
600
RLM3300L
RLM3300L
In Stock
From
$2,142.16
Westinghouse
300
600
RLM3350
RLM3350
In Stock
From
$1,815.97
Westinghouse
350
600
RLM3350L
RLM3350L
In Stock
From
$1,844.34
Westinghouse
350
600
RLM3400
RLM3400
In Stock
From
$661.85
Westinghouse
400
600
RLM3400L
RLM3400L
In Stock
From
$661.85
Westinghouse
400
600
RLM3500
RLM3500
In Stock
From
$3,566.58
Westinghouse
500
600
RLM3500L
RLM3500L
In Stock
From
$5,072.50
Westinghouse
500
600
RLM3600
RLM3600
In Stock
From
$3,587.37
Westinghouse
600
600
RLM3600K
RLM3600K
In Stock
From
$2,961.95
Westinghouse
600
600
RLM3600L
RLM3600L
In Stock
From
$3,208.20
Westinghouse
600
600
RLM3700
RLM3700
In Stock
From
$3,717.81
Westinghouse
700
600
RLM3700L
RLM3700L
In Stock
From
$3,601.03
Westinghouse
700
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.