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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
TXQB32030
TXQB32030
In Stock
From
$161.74
General Electric
30
240
TXQL1120
TXQL1120
In Stock
From
$101.84
General Electric
20
120
TXQL2130
TXQL2130
In Stock
From
$235.39
General Electric
30
240
UBIF030N
UBIF030N
In Stock
From
$28.71
Connecticut Electric
30
240
UBIZ15B
UBIZ15B
In Stock
From
$43.98
Connecticut Electric
15
240
UBIZ20B
UBIZ20B
In Stock
From
$82.24
Connecticut Electric
20
240
UBIZ30B
UBIZ30B
In Stock
From
$78.94
Connecticut Electric
30
240
VL1250-4P-1000A
VL1250-4P-1000A
In Stock
From
$620.33
Siemens
1000
690
VL630-4P-500A
VL630-4P-500A
In Stock
From
$967.70
Siemens
500
690
VL630N-3P-500A
VL630N-3P-500A
In Stock
From
$931.76
Siemens
500
690
VL630N-3P-630A
VL630N-3P-630A
In Stock
From
$263.90
Siemens
630
690
VL800N
VL800N
In Stock
From
$620.33
Siemens
800
690
XT4NU3200AYJ000XXX
XT4NU3200AYJ000XXX
In Stock
From
$1,243.10
ABB
200
600
3VA4120-6ED14-0AA0
3VA4120-6ED14-0AA0
In Stock
From
$170.74
Siemens
125
-
3VA4120-6ED24-0AA0
3VA4120-6ED24-0AA0
In Stock
From
$431.08
Siemens
125
-
5SU1356-0KK10
5SU1356-0KK10
Limited Stock
From
Get Price
Siemens
10
400
5SU1356-1KK10
5SU1356-1KK10
In Stock
From
$155.49
Siemens
10
400
5SU1356-1KK16
5SU1356-1KK16
Limited Stock
From
Get Price
Siemens
16
400
5SU1356-1KK20
5SU1356-1KK20
Limited Stock
From
Get Price
Siemens
20
400
5SU1356-1KK25
5SU1356-1KK25
Limited Stock
From
Get Price
Siemens
25
400
5SU1356-1KK32
5SU1356-1KK32
Limited Stock
From
Get Price
Siemens
32
400
5SU1356-1KK40
5SU1356-1KK40
Limited Stock
From
Get Price
Siemens
40
400
5SU1356-1KV06
5SU1356-1KV06
Limited Stock
From
Get Price
Siemens
6
400
5SU1356-6KK06
5SU1356-6KK06
In Stock
From
$520.79
Siemens
6
400
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.