1. Home / 
  2. All Categories / 
  3. Circuit Breaker / 
  4. Molded Case Circuit Breaker

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
RFA3100L
RFA3100L
In Stock
From
$494.10
Westinghouse
100
600
RFA3110L
RFA3110L
In Stock
From
$735.26
Westinghouse
110
600
RFA3125L
RFA3125L
In Stock
From
$910.69
Westinghouse
125
600
RFA3150L
RFA3150L
In Stock
From
$939.80
Westinghouse
150
600
RHKL3175
RHKL3175
In Stock
From
$1,079.27
Westinghouse
175
600
RJ2070
RJ2070
In Stock
From
$614.25
Westinghouse
70
600
RJ2070L
RJ2070L
In Stock
From
$616.78
Westinghouse
70
600
RJ2090
RJ2090
In Stock
From
$577.77
Westinghouse
90
600
RJ2090L
RJ2090L
In Stock
From
$666.65
Westinghouse
90
600
RJ2100
RJ2100
In Stock
From
$783.94
Westinghouse
100
600
RJ2100L
RJ2100L
In Stock
From
$783.94
Westinghouse
100
600
RJ2125
RJ2125
In Stock
From
$32.75
Westinghouse
125
600
RJ2125L
RJ2125L
In Stock
From
$32.75
Westinghouse
125
600
RJ2150
RJ2150
In Stock
From
$624.10
Westinghouse
150
600
RJ2150L
RJ2150L
In Stock
From
$624.10
Westinghouse
150
600
RJ2175
RJ2175
In Stock
From
$371.21
Westinghouse
175
600
RJ2175L
RJ2175L
In Stock
From
$371.21
Westinghouse
175
600
RJ2200
RJ2200
In Stock
From
$597.08
Westinghouse
200
600
RJ2200L
RJ2200L
In Stock
From
$597.08
Westinghouse
200
600
RJ2225
RJ2225
In Stock
From
$786.32
Westinghouse
225
600
RJ3070
RJ3070
In Stock
From
$779.36
Westinghouse
70
600
RJ3070L
RJ3070L
In Stock
From
$779.36
Westinghouse
70
600
RJ3090
RJ3090
In Stock
From
$902.86
Westinghouse
90
600
RJ3090L
RJ3090L
In Stock
From
$902.86
Westinghouse
90
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.