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
JS360150AO
JS360150AO
Limited Stock
From
Get Price
Thomas & Betts
150
600
JS360150AZ
JS360150AZ
Limited Stock
From
Get Price
Cutler Hammer
150
600
JS360175AO
JS360175AO
Limited Stock
From
Get Price
Thomas & Betts
175
600
JS360175AZ
JS360175AZ
Limited Stock
From
Get Price
Cutler Hammer
175
600
JS360200AZ
JS360200AZ
Limited Stock
From
Get Price
Cutler Hammer
200
600
JS360225AZ
JS360225AZ
Limited Stock
From
Get Price
Cutler Hammer
225
600
K3070PF
K3070PF
Limited Stock
From
Get Price
Cutler Hammer
70
600
K3090PF
K3090PF
Limited Stock
From
Get Price
Cutler Hammer
90
600
K3100PF
K3100PF
Limited Stock
From
Get Price
Cutler Hammer
100
600
K3125PF
K3125PF
Limited Stock
From
Get Price
Cutler Hammer
125
600
K3175PF
K3175PF
Limited Stock
From
Get Price
Cutler Hammer
175
600
K3200PF
K3200PF
Limited Stock
From
Get Price
Cutler Hammer
200
600
K3225PF
K3225PF
Limited Stock
From
Get Price
Cutler Hammer
225
600
KS220250D
KS220250D
Limited Stock
From
Get Price
Cutler Hammer
250
240
KS220300D
KS220300D
Limited Stock
From
Get Price
Cutler Hammer
300
240
KS220350D
KS220350D
Limited Stock
From
Get Price
Cutler Hammer
350
240
KS320250D
KS320250D
Limited Stock
From
Get Price
Cutler Hammer
250
240
KS320300
KS320300
Limited Stock
From
Get Price
Cutler Hammer
300
240
KS320350
KS320350
Limited Stock
From
Get Price
Cutler Hammer
350
240
LM31000P
LM31000P
Limited Stock
From
Get Price
Westinghouse
1000
600
LM31200F
LM31200F
Limited Stock
From
Get Price
Westinghouse
1200
600
LM31200P
LM31200P
Limited Stock
From
Get Price
Westinghouse
1200
600
LM3800P
LM3800P
Limited Stock
From
Get Price
Westinghouse
800
600
LM3900P
LM3900P
Limited Stock
From
Get Price
Westinghouse
900
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.