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
HQR23B125
HQR23B125
In Stock
From
$849.38
Siemens
125
240
HQR23B150
HQR23B150
In Stock
From
$833.73
Siemens
150
240
HQR23B150H
HQR23B150H
In Stock
From
$1,037.33
Siemens
150
240
HQR23B175
HQR23B175
In Stock
From
$965.76
Siemens
175
240
HQR23B200H
HQR23B200H
In Stock
From
$1,126.34
Siemens
200
240
HQR23B225
HQR23B225
In Stock
From
$623.86
Siemens
225
240
HQR23B225L
HQR23B225L
In Stock
From
$741.78
Siemens
225
240
HQR23B250H
HQR23B250H
In Stock
From
$1,069.85
Siemens
250
240
HQR23B250HL
HQR23B250HL
In Stock
From
$701.14
Siemens
250
240
JD3070
JD3070
In Stock
From
$1,672.17
Cutler Hammer
70
600
JD3090
JD3090
In Stock
From
$1,236.36
Westinghouse
90
600
JD3100
JD3100
In Stock
From
$993.09
Cutler Hammer
100
600
JD3125
JD3125
In Stock
From
$917.63
Eaton
125
600
JD3125W
JD3125W
In Stock
From
$1,667.25
Westinghouse
125
600
JD3150
JD3150
In Stock
From
$1,155.43
Eaton
150
600
JD3150W
JD3150W
In Stock
From
$1,337.42
Westinghouse
150
600
JD3175
JD3175
In Stock
From
$755.55
Eaton
175
600
JD3175W
JD3175W
In Stock
From
$1,321.10
Cutler Hammer
175
600
JD3175Y
JD3175Y
In Stock
From
$739.33
Westinghouse
175
600
JD3200W
JD3200W
In Stock
From
$926.87
Eaton
200
600
JD3200Y
JD3200Y
In Stock
From
$2,208.32
Eaton
200
600
JD3250W
JD3250W
In Stock
From
$1,908.56
Cutler Hammer
250
600
JDA262502
JDA262502
In Stock
From
$2,424.71
Square D
250
600
JDA262504
JDA262504
In Stock
From
$1,549.66
Square D
250
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.