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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
NDK3B125L
NDK3B125L
In Stock
From
$5,130.00
Siemens
125
600
NDK3B150L
NDK3B150L
In Stock
From
$611.87
Siemens
150
600
NFG3F250
NFG3F250
In Stock
From
$387.30
Siemens
250
600
NFK3T250L
NFK3T250L
In Stock
From
$9,146.88
Siemens
250
600
NG31000
NG31000
In Stock
From
$8,186.84
Cutler Hammer
1000
600
NG31200
NG31200
In Stock
From
$11,606.98
Westinghouse
1200
600
NGB3B020
NGB3B020
In Stock
From
$532.59
Siemens
20
600
NGB3B030B
NGB3B030B
In Stock
From
$442.82
Siemens
30
600
NGB3B070
NGB3B070
In Stock
From
$387.90
Siemens
70
600
NGB3K080
NGB3K080
In Stock
From
$700.46
Siemens
80
600
NGH312036B22E
NGH312036B22E
In Stock
From
$3,888.17
Eaton
1200
600
NJG3F400
NJG3F400
In Stock
From
$359.95
Siemens
400
600
NMG3F800
NMG3F800
In Stock
From
$868.74
Siemens
800
600
NMX3B800L
NMX3B800L
In Stock
From
$4,214.77
Siemens
800
600
NNG3F120
NNG3F120
In Stock
From
$3,545.46
Siemens
1200
600
P115
P115
In Stock
From
$9.70
ITE
15
120
P1515
P1515
In Stock
From
$97.87
ITE
15
120
P2100
P2100
In Stock
From
$144.67
ITE
100
240
P220
P220
In Stock
From
$57.32
ITE
20
240
P230
P230
In Stock
From
$63.25
ITE
30
240
P260
P260
In Stock
From
$49.76
ITE
60
240
P270
P270
In Stock
From
$192.92
Siemens
70
240
PCC32000F
PCC32000F
In Stock
From
$6,041.77
Eaton
2000
600
PDD23F0100TFFL
PDD23F0100TFFL
Limited Stock
From
Get Price
Eaton
100
240
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.