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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
KJ-456
KJ-456
In Stock
From
$8.92
Westinghouse
-
-
MCP03150RS
MCP03150RS
In Stock
From
$680.75
Westinghouse
-
-
NP255P289H01
NP255P289H01
In Stock
From
$121.25
Westinghouse
-
-
QC290
QC290
In Stock
From
$91.97
Westinghouse
-
-
RT-1694
RT-1694
In Stock
From
$9.44
Westinghouse
-
-
SPCL1C06
SPCL1C06
In Stock
From
$51.34
Westinghouse
-
-
376D200G01
376D200G01
In Stock
From
$0.02
Westinghouse
-
-
376D200G04
376D200G04
In Stock
From
$159.36
Westinghouse
-
-
DA3400NXZ
DA3400NXZ
Limited Stock
From
Get Price
Westinghouse
400
240
F3100P
F3100P
In Stock
From
$53.44
Westinghouse
-
-
HMCP003A0B
HMCP003A0B
In Stock
From
Get Price
Eaton
3
-
HKL3300
HKL3300
In Stock
From
Get Price
Westinghouse
300
600
JKL3300
JKL3300
In Stock
From
Get Price
Westinghouse
300
600
E2100N
E2100N
In Stock
From
$300.56
Westinghouse
-
-
MC3800NW
MC3800NW
In Stock
From
$249.47
Westinghouse
-
-
1265C95G01
1265C95G01
In Stock
From
$257.58
Westinghouse
-
-
HF3015V
HF3015V
In Stock
From
$121.59
Westinghouse
-
-
LA2400FN
LA2400FN
In Stock
From
$560.00
Westinghouse
-
-
MCP0322
MCP0322
In Stock
From
$82.64
Westinghouse
-
-
E-7819-1P-15A
E-7819-1P-15A
In Stock
From
Get Price
Westinghouse
-
-
FA3035SM
FA3035SM
In Stock
From
$263.82
Westinghouse
-
-
HPD3050L
HPD3050L
In Stock
From
$677.03
Westinghouse
-
-
1265C95G03
1265C95G03
In Stock
From
$62.20
Westinghouse
250
600
1532373
1532373
In Stock
From
$27.82
Westinghouse
-
-
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.