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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
RKL3150
RKL3150
In Stock
From
$520.51
Westinghouse
150
600
RKL3150L
RKL3150L
In Stock
From
$520.51
Westinghouse
150
600
RKL3175
RKL3175
In Stock
From
$696.88
Westinghouse
175
600
RKL3175L
RKL3175L
In Stock
From
$696.88
Westinghouse
175
600
RKL3200
RKL3200
In Stock
From
$689.38
Westinghouse
200
600
RKL3200L
RKL3200L
In Stock
From
$689.38
Westinghouse
200
600
RKL3225
RKL3225
In Stock
From
$722.00
Westinghouse
225
600
RKL3225L
RKL3225L
In Stock
From
$722.00
Westinghouse
225
600
RKL3250
RKL3250
In Stock
From
$1,248.94
Westinghouse
250
600
RKL3250L
RKL3250L
In Stock
From
$1,248.94
Westinghouse
250
600
RKL3300
RKL3300
In Stock
From
$1,088.58
Westinghouse
300
600
RKL3300L
RKL3300L
In Stock
From
$959.40
Westinghouse
300
600
RKL3350
RKL3350
In Stock
From
$942.85
Westinghouse
350
600
RKL3350L
RKL3350L
In Stock
From
$1,046.05
Westinghouse
350
600
RKL3400
RKL3400
In Stock
From
$1,048.96
Westinghouse
400
600
RKL3400K
RKL3400K
In Stock
From
$1,015.05
Westinghouse
400
600
RKL3400L
RKL3400L
In Stock
From
$1,059.01
Westinghouse
400
600
RLM2125
RLM2125
In Stock
From
$32.75
Westinghouse
125
600
RLM2125L
RLM2125L
In Stock
From
$32.75
Westinghouse
125
600
RLM2150
RLM2150
In Stock
From
$624.10
Westinghouse
150
600
RLM2150L
RLM2150L
In Stock
From
$624.10
Westinghouse
150
600
RLM2175
RLM2175
In Stock
From
$371.21
Westinghouse
175
600
RLM2175L
RLM2175L
In Stock
From
$371.21
Westinghouse
175
600
RLM2200
RLM2200
In Stock
From
$597.08
Westinghouse
200
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.