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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
REF2B090
REF2B090
In Stock
From
$752.86
Miami Breaker
90
600
REF3B030
REF3B030
In Stock
From
$163.34
Miami Breaker
30
600
REF2B010
REF2B010
In Stock
From
$456.30
Miami Breaker
10
600
REF2B035
REF2B035
In Stock
From
$331.44
Miami Breaker
35
600
REF2B060
REF2B060
In Stock
From
$629.36
Miami Breaker
60
600
REF2B070
REF2B070
In Stock
From
$794.32
Miami Breaker
70
600
REF3A003
REF3A003
In Stock
From
$557.04
Miami Breaker
3
600
REF3A005
REF3A005
In Stock
From
$430.20
Miami Breaker
5
600
REF3A010
REF3A010
In Stock
From
$369.47
Miami Breaker
10
600
REF3L050
REF3L050
In Stock
From
$428.46
Miami Breaker
50
600
REF3L150
REF3L150
In Stock
From
$2,157.94
Miami Breaker
150
600
REH3030
REH3030
In Stock
From
$84.84
Miami Breaker
30
480
REF3B035
REF3B035
In Stock
From
$621.75
Miami Breaker
35
600
RHE3A005
RHE3A005
In Stock
From
$1,354.43
Miami Breaker
-
-
RHE3B040
RHE3B040
In Stock
From
$982.87
Miami Breaker
-
-
RJL3S400
RJL3S400
In Stock
From
$2,869.79
Miami Breaker
-
-
REF2B110
REF2B110
In Stock
From
$1,303.25
Miami Breaker
-
-
REF2B150
REF2B150
In Stock
From
$1,202.81
Miami Breaker
-
-
REF3S150
REF3S150
In Stock
From
$1,744.67
Miami Breaker
-
-
RFJ3M125
RFJ3M125
In Stock
From
$2,915.47
Miami Breaker
-
-
RFJ3M150
RFJ3M150
In Stock
From
$2,290.13
Miami Breaker
-
-
RFJ3M175
RFJ3M175
In Stock
From
$2,915.47
Miami Breaker
-
-
RFJ3M200
RFJ3M200
In Stock
From
$2,417.37
Miami Breaker
-
-
RFJ3M225
RFJ3M225
In Stock
From
$2,540.95
Miami Breaker
-
-
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.