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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
MDLB3700W
MDLB3700W
In Stock
From
$1,368.07
Eaton
700
600
NBDC3900MW
NBDC3900MW
In Stock
From
$5,783.28
Eaton
900
600
NGC308033E
NGC308033E
In Stock
From
$8,099.09
Eaton
-
-
NGC308033EC
NGC308033EC
In Stock
From
$13,900.40
Eaton
-
-
NGC312035EC
NGC312035EC
In Stock
From
$9,588.19
Eaton
-
-
NGC312036EC
NGC312036EC
In Stock
From
$8,044.57
Eaton
-
-
NN361200A
NN361200A
In Stock
From
$1,399.74
Eaton
1200
600
QBGFEP1015W2
QBGFEP1015W2
In Stock
From
$263.64
Eaton
15
120
QBHW1015S
QBHW1015S
In Stock
From
$287.62
Cutler Hammer
15
240
QC1015V
QC1015V
In Stock
From
$57.27
Eaton
15
240
QC1020E
QC1020E
In Stock
From
$51.39
Eaton
20
240
QC1020V
QC1020V
In Stock
From
$40.29
Eaton
20
240
QC1035
QC1035
In Stock
From
$15.99
Cutler Hammer
35
240
QC1045
QC1045
In Stock
From
$17.65
Cutler Hammer
45
240
QC2015V
QC2015V
In Stock
From
$129.06
Eaton
15
240
QC2025
QC2025
In Stock
From
$69.90
Cutler Hammer
25
240
QC2035
QC2035
In Stock
From
$25.74
Cutler Hammer
35
240
RD316T51W
RD316T51W
In Stock
From
$6,805.69
Eaton
1600
600
RD316T53W
RD316T53W
In Stock
From
$5,950.22
Cutler Hammer
1600
600
RD316T56W
RD316T56W
In Stock
From
$4,390.54
Eaton
1600
600
RD316TW
RD316TW
In Stock
From
$6,674.05
Cutler Hammer
1600
600
RD320T92W
RD320T92W
In Stock
From
$10,449.76
Westinghouse
2000
600
RDC316T32W
RDC316T32W
In Stock
From
$5,974.33
Eaton
1600
600
RGC316033E
RGC316033E
In Stock
From
$9,070.40
Eaton
1600
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.