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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
HHED63B050
HHED63B050
In Stock
From
$626.10
Siemens
50
600
HHJD63F400
HHJD63F400
In Stock
From
$1,982.04
Siemens
400
600
HHLD63B600
HHLD63B600
In Stock
From
$2,950.91
Siemens
600
600
HHLXD63B450
HHLXD63B450
In Stock
From
$2,196.05
Siemens
450
600
HHLXD63B600L
HHLXD63B600L
In Stock
From
$2,824.78
Siemens
600
600
HJ3B250
HJ3B250
In Stock
From
$757.90
Siemens
250
600
HJXD63B250
HJXD63B250
In Stock
From
$2,647.08
Siemens
250
600
HJXD63B250H
HJXD63B250H
In Stock
From
$1,283.66
Siemens
250
600
HJXD63B400H
HJXD63B400H
In Stock
From
$1,346.70
Siemens
400
600
HLD63B500
HLD63B500
In Stock
From
$2,381.78
Siemens
500
600
HLD63B600L
HLD63B600L
In Stock
From
$982.05
Siemens
600
600
HLD63F600
HLD63F600
In Stock
From
$2,029.23
Siemens
600
600
HLXD63B600L
HLXD63B600L
In Stock
From
$1,560.26
Siemens
600
600
HMG3B600L
HMG3B600L
In Stock
From
$5,809.09
Siemens
600
600
HMG3R800L
HMG3R800L
In Stock
From
$5,612.92
Siemens
800
600
HMX3B700
HMX3B700
In Stock
From
$5,135.63
Siemens
700
600
HMX3B700L
HMX3B700L
In Stock
From
$4,241.81
Siemens
700
600
HQR22B100
HQR22B100
In Stock
From
$533.00
Siemens
100
240
HQR22B150H
HQR22B150H
In Stock
From
$445.56
Siemens
150
240
HQR22B225
HQR22B225
In Stock
From
$350.39
Siemens
225
240
HQR22B250L
HQR22B250L
In Stock
From
$1,490.55
Siemens
250
240
HQR23B175
HQR23B175
In Stock
From
$982.80
Siemens
175
240
HQR23B200H
HQR23B200H
In Stock
From
$1,170.00
Siemens
200
240
HQR23B225HL
HQR23B225HL
In Stock
From
$1,200.91
Siemens
225
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.