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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
Q235HH
Q235HH
In Stock
From
Get Price
Siemens
35
240
Q24020
Q24020
In Stock
From
$55.23
Siemens
40
240
Q24020NC
Q24020NC
In Stock
From
$102.18
Siemens
40
240
Q24040CT2
Q24040CT2
In Stock
From
$157.56
Siemens
40
240
Q245
Q245
In Stock
From
$178.32
Siemens
45
240
Q245H
Q245H
In Stock
From
$63.13
Siemens
45
240
Q320HH00S01
Q320HH00S01
In Stock
From
$374.63
Siemens
20
240
Q35
Q35
In Stock
From
$18.36
Siemens
35
240
Q40
Q40
In Stock
From
$12.71
Siemens
40
120
Q50
Q50
In Stock
From
$21.75
Siemens
50
120
Q60
Q60
In Stock
From
$16.12
Siemens
60
120
QF125
QF125
In Stock
From
$67.32
Siemens
25
120
QF125A
QF125A
In Stock
From
$75.89
Siemens
25
120
QF21515
QF21515
In Stock
From
$62.88
Siemens
15
240
QG230
QG230
In Stock
From
$112.04
Siemens
30
240
QG315
QG315
In Stock
From
$41.99
Siemens
15
240
QG320
QG320
In Stock
From
$24.46
Siemens
20
240
QN2150
QN2150
In Stock
From
$205.31
Siemens
150
240
QN2150RH
QN2150RH
In Stock
From
$162.91
Siemens
150
240
QN2175H
QN2175H
In Stock
From
$237.04
Siemens
175
240
QN2175R
QN2175R
In Stock
From
$311.63
Siemens
175
240
QN2175RH
QN2175RH
In Stock
From
$230.60
Siemens
175
240
QN2200R
QN2200R
In Stock
From
$164.44
Siemens
200
240
QN2200RH
QN2200RH
In Stock
From
$229.55
Siemens
200
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.