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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
HQNP3030
HQNP3030
In Stock
From
$66.17
Cutler Hammer
30
240
HQNPL2050
HQNPL2050
In Stock
From
$36.95
Cutler Hammer
50
240
HQNPL3050
HQNPL3050
In Stock
From
$36.95
Cutler Hammer
50
240
HQP1025
HQP1025
In Stock
From
$14.68
Cutler Hammer
25
120
HQP1040
HQP1040
In Stock
From
$24.25
Cutler Hammer
40
120
HQP1055
HQP1055
In Stock
From
$7.18
Cutler Hammer
55
120
HQP1070
HQP1070
In Stock
From
$28.51
Cutler Hammer
70
120
HQP2030B
HQP2030B
In Stock
From
$45.13
Cutler Hammer
30
240
HQP2040
HQP2040
In Stock
From
$68.23
Cutler Hammer
40
240
HQP2125
HQP2125
In Stock
From
$115.53
Cutler Hammer
125
240
KD3400KWA06
KD3400KWA06
In Stock
From
$333.33
Eaton
400
600
MN360800A
MN360800A
In Stock
From
$3,829.75
Eaton
800
600
PB32000N
PB32000N
In Stock
From
$663.11
Cutler Hammer
2000
600
QB1030GF
QB1030GF
In Stock
From
$184.13
Cutler Hammer
30
120
QBCAF1015
QBCAF1015
In Stock
From
$179.45
Cutler Hammer
15
240
QBGF1025
QBGF1025
In Stock
From
$96.79
Cutler Hammer
25
120
QBGF2040
QBGF2040
In Stock
From
$337.42
Cutler Hammer
40
240
QBGF2050
QBGF2050
In Stock
From
$284.85
Cutler Hammer
50
240
QBGFEP1030W1
QBGFEP1030W1
In Stock
From
$542.82
Eaton
30
120
QBH1015EP
QBH1015EP
In Stock
From
$155.38
Cutler Hammer
15
120
QBH2060
QBH2060
In Stock
From
$19.80
Cutler Hammer
60
240
QBH40
QBH40
In Stock
From
$122.42
Eaton
40
120
QBHAF1015
QBHAF1015
In Stock
From
$185.07
Cutler Hammer
15
240
QBHGFEP1030
QBHGFEP1030
In Stock
From
$379.11
Cutler Hammer
30
120
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.