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
HFB3110L
HFB3110L
In Stock
From
$664.53
Cutler Hammer
110
600
HFB3125L
HFB3125L
In Stock
From
$564.02
Cutler Hammer
125
600
HFB3150N
HFB3150N
In Stock
From
$1,580.70
Westinghouse
150
600
HFB3150V
HFB3150V
In Stock
From
$45.75
Westinghouse
150
600
HFB31550ML
HFB31550ML
In Stock
From
$120.57
Westinghouse
100
600
HFB31800ML
HFB31800ML
In Stock
From
$616.19
Cutler Hammer
150
600
HFB3190ML
HFB3190ML
In Stock
From
$481.51
Cutler Hammer
25
600
HFB3480ML
HFB3480ML
In Stock
From
$340.24
Cutler Hammer
50
600
HFDDC3175L
HFDDC3175L
In Stock
From
$1,761.30
Eaton
175
600
HFWF2063L
HFWF2063L
In Stock
From
$272.70
Westinghouse
63
690
HFWF4100L
HFWF4100L
In Stock
From
$1,010.00
Westinghouse
100
690
HJD2090
HJD2090
In Stock
From
$4.49
Cutler Hammer
90
600
HJDDC3175
HJDDC3175
In Stock
From
$1,132.50
Cutler Hammer
175
600
HJDDC3200
HJDDC3200
In Stock
From
$396.91
Westinghouse
200
600
HKA3070
HKA3070
In Stock
From
$590.50
Westinghouse
70
600
HKA3100
HKA3100
In Stock
From
$423.07
Cutler Hammer
100
600
HKA3125
HKA3125
In Stock
From
$1,307.60
Westinghouse
125
600
HKA3150
HKA3150
In Stock
From
$555.75
Cutler Hammer
150
600
HKA3150A
HKA3150A
In Stock
From
$4,050.00
Westinghouse
150
600
HKA3175
HKA3175
In Stock
From
$807.94
Westinghouse
175
600
HKA3200
HKA3200
In Stock
From
$381.10
Westinghouse
200
600
HKB2070
HKB2070
In Stock
From
$34.45
Westinghouse
70
600
HKB2090
HKB2090
In Stock
From
$3.63
Cutler Hammer
90
600
HKB2100
HKB2100
In Stock
From
$34.89
Cutler Hammer
100
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.