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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
HMCP003A0S
HMCP003A0S
In Stock
From
$607.82
Eaton
3
-
HMCP050K2S
HMCP050K2S
In Stock
From
$316.22
Eaton
50
-
HMCP080H1C
HMCP080H1C
In Stock
From
$612.41
Eaton
80
-
HMCP100R3S
HMCP100R3S
In Stock
From
$1,365.62
Eaton
100
-
IQESJ208
IQESJ208
In Stock
From
$738.43
Eaton
-
600
IQESK480
IQESK480
In Stock
From
$647.21
Eaton
-
480
JD3200K
JD3200K
In Stock
From
$54.26
Eaton
200
600
JT2225T
JT2225T
In Stock
From
$267.93
Eaton
-
600
JT316035
JT316035
In Stock
From
$623.79
Eaton
-
600
KDC3250LSI
KDC3250LSI
In Stock
From
$841.01
Eaton
250
600
KI3400F
KI3400F
In Stock
From
$55.56
Westinghouse
400
480
LDC3600LS
LDC3600LS
In Stock
From
$418.80
Eaton
600
600
NGS208033E
NGS208033E
In Stock
From
$6,244.79
Eaton
800
480
NZM6B-63/ZM6-12-80-OBI-CNA
NZM6B-63/ZM6-12-80-OBI-CNA
In Stock
From
$331.27
Eaton
12
600
NZM6B-63/ZM6-6.6-32-OBI-CNA
NZM6B-63/ZM6-6.6-32-OBI-CNA
In Stock
From
$265.44
Eaton
6.6
600
NZM6B-63/ZM6-6.6-50-OBI-CNA
NZM6B-63/ZM6-6.6-50-OBI-CNA
In Stock
From
$452.20
Eaton
6.6
600
NZM7-80N-NA
NZM7-80N-NA
In Stock
From
$387.27
Eaton
80
600
NZM7A-60N-NA
NZM7A-60N-NA
In Stock
From
$189.01
Eaton
60
600
NZM7A-80N-NA
NZM7A-80N-NA
Limited Stock
From
Get Price
Eaton
80
600
NZM7A-90N-NA
NZM7A-90N-NA
Limited Stock
From
Get Price
Eaton
100
600
NZM9-250/ZM9A-125-NA
NZM9-250/ZM9A-125-NA
In Stock
From
$1,078.75
Eaton
125
600
NZMB1-4-A20
NZMB1-4-A20
In Stock
From
$141.40
Klockner Moeller
20
440
NZMB1-4-A40
NZMB1-4-A40
Limited Stock
From
Get Price
Eaton
40
440
NZMB1-4-A80
NZMB1-4-A80
Limited Stock
From
Get Price
Klockner Moeller
80
440
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.