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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
FD4045
FD4045
In Stock
From
$694.17
Westinghouse
45
600
FD4050
FD4050
In Stock
From
$2,075.15
Eaton
50
600
HFD3030L
HFD3030L
In Stock
From
$811.95
Eaton
30
600
NGC312038E
NGC312038E
In Stock
From
$13,489.02
Eaton
-
-
NGS308032E
NGS308032E
In Stock
From
$4,086.02
Eaton
-
-
NGS308032EC
NGS308032EC
In Stock
From
$11,435.89
Eaton
-
-
NGS308035E
NGS308035E
In Stock
From
$7,712.12
Eaton
-
-
NGS308036EC
NGS308036EC
In Stock
From
$5,575.88
Eaton
-
-
NGS312033EC
NGS312033EC
In Stock
From
$8,028.91
Eaton
-
-
NGS312035EC
NGS312035EC
In Stock
From
$8,199.47
Eaton
-
-
NGS312036EC
NGS312036EC
In Stock
From
$7,770.87
Eaton
-
-
NGS312039EC
NGS312039EC
In Stock
From
$7,982.84
Eaton
-
-
QBGFEP2040
QBGFEP2040
In Stock
From
$212.41
Eaton
40
240
QBGFT2025
QBGFT2025
In Stock
From
$353.48
Eaton
25
240
CH2125
CH2125
In Stock
From
$483.88
Eaton
125
240
CHFCAF115CS
CHFCAF115CS
In Stock
From
$86.77
Eaton
-
240
CKD3100
CKD3100
In Stock
From
$166.67
Westinghouse
100
600
CKD3100W
CKD3100W
In Stock
From
$485.84
Eaton
100
600
CKD3100X
CKD3100X
In Stock
From
$485.84
Eaton
100
600
CKD3100Y
CKD3100Y
In Stock
From
$200.00
Westinghouse
100
600
CKD3125
CKD3125
In Stock
From
$747.21
Eaton
125
600
CKD3125W
CKD3125W
In Stock
From
$747.21
Eaton
125
600
CKD3125X
CKD3125X
In Stock
From
$10,603.33
Westinghouse
125
600
CKD3125Y
CKD3125Y
In Stock
From
$747.21
Eaton
125
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.