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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
JFP63B291
JFP63B291
In Stock
From
$3,472.98
Siemens
335
600
JK3B200
JK3B200
In Stock
From
$434.86
Siemens
200
600
JK3B225
JK3B225
In Stock
From
$724.24
ITE
225
600
JT2200FA
JT2200FA
In Stock
From
$304.05
Eaton
200
600
JT3160TA
JT3160TA
In Stock
From
$1,756.39
Eaton
-
600
K16A
K16A
In Stock
From
$88.07
ABB
16
480
KAL36000
KAL36000
In Stock
From
$612.66
Square D
225
600
KAM3225
KAM3225
In Stock
From
$2,971.01
Westinghouse
225
600
KPB3F120
KPB3F120
In Stock
From
$94.85
ITE
1200
600
KQ10D316
KQ10D316
Limited Stock
From
Get Price
Square D
16
415
KS360400D
KS360400D
In Stock
From
$1,154.89
Cutler Hammer
400
600
KW3315V
KW3315V
In Stock
From
$498.74
Eaton
315
690
L9-32/3/D
L9-32/3/D
In Stock
From
$501.07
Sprecher & Schuh
32
480
LAB36300
LAB36300
In Stock
From
$818.36
Square D
300
600
LB115
LB115
In Stock
From
$7.61
Leviton
15
240
LGA36600U44X
LGA36600U44X
In Stock
From
$7,904.16
Schneider Electric
600
600
LGB1B020
LGB1B020
In Stock
From
$52.19
Siemens
20
347
LGB1B020B
LGB1B020B
In Stock
From
$203.62
Siemens
20
347
LGB1B040B
LGB1B040B
In Stock
From
$145.58
Siemens
40
347
LGB1B100B
LGB1B100B
In Stock
From
$741.01
Siemens
100
347
LGB2B035B
LGB2B035B
In Stock
From
$282.55
Siemens
35
600
LGB2B040B
LGB2B040B
In Stock
From
$442.10
Siemens
40
600
LGB2B045B
LGB2B045B
In Stock
From
$173.75
Siemens
45
600
LGB2B070B
LGB2B070B
In Stock
From
$367.48
Siemens
70
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.