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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
KD3400FS
KD3400FS
In Stock
From
$2,709.35
Eaton
-
-
MBED1836B100BF
MBED1836B100BF
In Stock
From
$3,028.99
Eaton
-
-
NZM-XSTK
NZM-XSTK
In Stock
From
$35.35
Eaton
-
-
NZM4-XUVHIV20
NZM4-XUVHIV20
Limited Stock
From
Get Price
Eaton
-
-
NZMB2-4-A125
NZMB2-4-A125
In Stock
From
$2,632.10
Eaton
-
600
P3-100/EA/SVB
P3-100/EA/SVB
Limited Stock
From
Get Price
Eaton
100
-
PDG33M0600KNSJ
PDG33M0600KNSJ
In Stock
From
$4,121.60
Eaton
-
-
PKZM0-1-T
PKZM0-1-T
Limited Stock
From
Get Price
Eaton
-
-
PKZM0-16
PKZM0-16
In Stock
From
$124.94
Eaton
-
-
PKZM0-20
PKZM0-20
In Stock
From
$199.14
Eaton
-
-
PLSM-C10-MW
PLSM-C10-MW
In Stock
From
$10.21
Eaton
-
-
PN1-100
PN1-100
In Stock
From
$114.60
Eaton
-
-
QC3060HT
QC3060HT
In Stock
From
$279.38
Eaton
-
240
QCP2015
QCP2015
In Stock
From
$76.20
Eaton
-
240
QCPHW1015
QCPHW1015
In Stock
From
$63.63
Eaton
-
240
QCPHW2015
QCPHW2015
In Stock
From
$64.02
Eaton
-
240
QCPHW2030
QCPHW2030
In Stock
From
$87.48
Eaton
-
240
QCPHW2040
QCPHW2040
In Stock
From
$72.90
Eaton
-
240
SPHM2RM0030
SPHM2RM0030
In Stock
From
$54.37
Eaton
-
-
XTPE012B
XTPE012B
In Stock
From
$256.25
Eaton
-
-
XTPRP25BC1
XTPRP25BC1
In Stock
From
$123.34
Eaton
-
-
BQL25
BQL25
In Stock
From
$38.02
Eaton
25
240
BQL40
BQL40
In Stock
From
$50.04
Eaton
40
240
BQL50
BQL50
In Stock
From
$36.78
Eaton
50
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.