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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
HE43B020
HE43B020
In Stock
From
$124.11
Siemens
20
480
HE43B030
HE43B030
In Stock
From
$450.25
Siemens
30
480
HE43B040
HE43B040
In Stock
From
$92.81
Siemens
40
480
HE43B060
HE43B060
In Stock
From
$266.93
Siemens
60
480
HE43B100
HE43B100
In Stock
From
$113.36
Siemens
100
480
HE43M035
HE43M035
In Stock
From
$3.67
Gould
35
480
HE43M090
HE43M090
In Stock
From
$273.58
Siemens
90
480
HF3B020
HF3B020
In Stock
From
$52.40
Siemens
20
600
HKB3F120
HKB3F120
In Stock
From
$3,383.29
Siemens
1200
600
JD3B400
JD3B400
In Stock
From
$729.48
Siemens
400
240
JK3B225
JK3B225
In Stock
From
$720.61
ITE
225
600
KPB3F120
KPB3F120
In Stock
From
$79.07
ITE
1200
600
P115GF
P115GF
In Stock
From
$69.11
ITE
15
120
P120GF
P120GF
In Stock
From
$173.33
ITE
20
120
P130
P130
In Stock
From
$36.62
ITE
30
120
P1520
P1520
In Stock
From
$79.51
Siemens
20
120
P2020
P2020
In Stock
From
$62.32
Siemens
20
120
QP120
QP120
In Stock
From
$10.24
ITE
20
240
QP130
QP130
In Stock
From
$10.42
ITE
30
240
QP1B015
QP1B015
In Stock
From
$6.85
ITE
15
240
QP1B020
QP1B020
In Stock
From
$4.00
ITE
20
240
QP2B020
QP2B020
In Stock
From
$38.15
ITE
20
240
QP2B030
QP2B030
In Stock
From
$18.21
ITE
30
240
QP2B050
QP2B050
In Stock
From
$20.32
ITE
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.