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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
3VA6580-7JP32-0AA0
3VA6580-7JP32-0AA0
In Stock
From
$20,813.00
Siemens
800
600
3VA9673-0JB32
3VA9673-0JB32
In Stock
From
$399.18
Siemens
-
-
5SY6110-7
5SY6110-7
In Stock
From
$35.13
Siemens
10
400
B2100M
B2100M
In Stock
From
$247.45
Siemens
-
-
B210HH
B210HH
In Stock
From
$98.73
Siemens
10
240
B310H00S01
B310H00S01
In Stock
From
$132.69
Siemens
10
240
B310HH00S01
B310HH00S01
In Stock
From
$270.94
Siemens
10
240
CLE63M015
CLE63M015
In Stock
From
$125.19
Siemens
15
600
E23B060L
E23B060L
In Stock
From
$26.99
Siemens
60
240
ED63A050BP
ED63A050BP
In Stock
From
$1,706.25
Siemens
-
-
ED63B015L1
ED63B015L1
In Stock
From
$2,648.22
Siemens
-
-
G3B020
G3B020
In Stock
From
$12.56
ITE
20
240
G3B025
G3B025
In Stock
From
$12.56
ITE
25
240
G3B030
G3B030
In Stock
From
$435.99
Siemens
30
240
G3B050
G3B050
In Stock
From
$795.20
Siemens
50
240
G3B070
G3B070
In Stock
From
$541.19
ITE
70
240
G3B100
G3B100
In Stock
From
$11.78
Siemens
100
240
HM3B500
HM3B500
In Stock
From
$704.55
ITE
500
600
HM3B700
HM3B700
In Stock
From
$915.78
Siemens
700
600
J2B125
J2B125
In Stock
From
$7.94
ITE
125
600
J2B150
J2B150
In Stock
From
$699.67
Siemens
150
600
J2B175
J2B175
In Stock
From
$839.60
Siemens
175
600
J2B200
J2B200
In Stock
From
$743.55
ITE
200
600
J2B225
J2B225
In Stock
From
$5.58
ITE
225
600
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.