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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
KS360250
KS360250
In Stock
From
$1,133.03
Thomas & Betts
250
600
KS360250A
KS360250A
In Stock
From
$1,028.15
Thomas & Betts
250
600
KS360300
KS360300
In Stock
From
$1,068.21
Thomas & Betts
300
600
KS360300A
KS360300A
In Stock
From
$596.73
Thomas & Betts
300
600
KS360350
KS360350
In Stock
From
$976.25
Thomas & Betts
350
600
KS360350A
KS360350A
In Stock
From
$813.54
Thomas & Betts
350
600
KS360400
KS360400
In Stock
From
$1,086.12
Thomas & Betts
400
600
LS360250E
LS360250E
In Stock
From
$5,116.07
Thomas & Betts
250
600
LSB220600E
LSB220600E
In Stock
From
$109.90
Thomas & Betts
600
240
LSB320600E
LSB320600E
In Stock
From
$752.50
Thomas & Betts
600
240
LSB360250E
LSB360250E
In Stock
From
$380.81
Thomas & Betts
250
600
LSB360300E
LSB360300E
Limited Stock
From
Get Price
Thomas & Betts
300
600
LSB360450E
LSB360450E
In Stock
From
$2,297.60
Thomas & Betts
450
600
LSB360500E
LSB360500E
In Stock
From
$2,848.52
Thomas & Betts
500
600
QC-20
QC-20
In Stock
From
$49.70
Zinsco
20
240
QC-60
QC-60
In Stock
From
$22.73
Zinsco
60
240
QFL2125
QFL2125
In Stock
From
$304.82
Thomas & Betts
125
240
QFP2100
QFP2100
In Stock
From
$298.50
Thomas & Betts
100
240
TB2110
TB2110
In Stock
From
$7.54
Thomas & Betts
110
240
TB215
TB215
In Stock
From
$17.66
Thomas & Betts
15
240
TB320
TB320
In Stock
From
$41.50
Thomas & Betts
20
240
TB330
TB330
In Stock
From
$114.97
Thomas & Betts
30
240
TB360
TB360
In Stock
From
$58.33
Thomas & Betts
60
240
TB370
TB370
In Stock
From
$136.51
Thomas & Betts
70
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.