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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
FAZT-B10/1
FAZT-B10/1
Limited Stock
From
Get Price
Eaton
10
480
FDB3110LBP10
FDB3110LBP10
In Stock
From
$1,036.52
Eaton
110
600
GD3030A3
GD3030A3
In Stock
From
$1,073.64
Eaton
-
-
GD3035A3
GD3035A3
In Stock
From
$1,001.01
Eaton
-
-
HFD3050LA02
HFD3050LA02
In Stock
From
$2,060.90
Eaton
-
-
HFD3225H08
HFD3225H08
In Stock
From
$6,159.99
Eaton
-
-
HMCP030H1CA04
HMCP030H1CA04
In Stock
From
$749.45
Eaton
-
-
HMCP150U4CBP10
HMCP150U4CBP10
In Stock
From
$1,238.97
Eaton
-
-
HMCP150U4CS05
HMCP150U4CS05
In Stock
From
$2,863.35
Eaton
-
-
JD3250KA13D18
JD3250KA13D18
In Stock
From
$4,059.19
Eaton
-
-
JDB3250KXD03
JDB3250KXD03
In Stock
From
$2,752.22
Eaton
-
-
KS320400A
KS320400A
In Stock
From
$240.41
Cutler Hammer
400
240
LD3600KA13X01Y17
LD3600KA13X01Y17
In Stock
From
$13,974.36
Eaton
-
-
LD3600KX04Y20
LD3600KX04Y20
In Stock
From
$3,379.52
Eaton
-
-
LDC3600FK01P05Y01
LDC3600FK01P05Y01
In Stock
From
$17,894.34
Eaton
-
-
MDL3600V
MDL3600V
In Stock
From
$10,139.39
Eaton
-
-
NZMB1-AF125-NA
NZMB1-AF125-NA
In Stock
From
$1,623.37
Eaton
125
480
NZMH2-A125-NA
NZMH2-A125-NA
In Stock
From
$2,412.50
Klockner Moeller
125
600
NZMN1-M100
NZMN1-M100
In Stock
From
$942.09
Klockner Moeller
100
690
NZMN2-VE250-NA
NZMN2-VE250-NA
In Stock
From
$3,350.00
Eaton
250
600
PDD22G0150TFFJ
PDD22G0150TFFJ
In Stock
From
$626.45
Eaton
150
240
QHCW2020
QHCW2020
In Stock
From
$293.07
Cutler Hammer
20
240
QHCW2025
QHCW2025
In Stock
From
$106.24
Eaton
25
240
WMZH2D15
WMZH2D15
In Stock
From
$175.24
Eaton
15
480
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.