1. Home / 
  2. All Categories / 
  3. Circuit Breaker / 
  4. Molded Case Circuit Breaker

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
QF120
QF120
In Stock
From
$30.80
Siemens
20
120
QF130A
QF130A
In Stock
From
$69.16
Siemens
30
120
QF130AH
QF130AH
In Stock
From
$166.04
Siemens
30
120
QF220
QF220
In Stock
From
$244.83
Siemens
20
240
QF220A
QF220A
In Stock
From
$130.38
Siemens
20
240
QF230
QF230
In Stock
From
$227.65
Siemens
30
240
QF250A
QF250A
In Stock
From
$130.00
Siemens
50
240
QJ22B060
QJ22B060
In Stock
From
$265.11
Siemens
60
240
QJ22B100
QJ22B100
In Stock
From
$435.53
Siemens
100
240
QJ22B200
QJ22B200
In Stock
From
$848.85
Siemens
200
240
QJ22B200H
QJ22B200H
In Stock
From
$370.36
Siemens
200
240
QJ22B225
QJ22B225
In Stock
From
$439.99
Siemens
225
240
QJ22B225L
QJ22B225L
In Stock
From
$305.87
Siemens
225
240
QJ23B125H
QJ23B125H
In Stock
From
$589.00
Siemens
125
240
QJ23B200H
QJ23B200H
In Stock
From
$1,394.18
Siemens
200
240
QS2150
QS2150
In Stock
From
$159.32
Siemens
150
240
QS2150H
QS2150H
In Stock
From
$394.73
Siemens
150
240
QS2150HH
QS2150HH
In Stock
From
$493.39
Siemens
150
240
QS2175H
QS2175H
In Stock
From
$376.48
Siemens
175
240
QS2225
QS2225
In Stock
From
$275.91
Siemens
225
240
QS2225H
QS2225H
In Stock
From
$357.71
Siemens
225
240
QT1-1515
QT1-1515
In Stock
From
$19.28
Siemens
15
240
QT1-1520
QT1-1520
In Stock
From
$10.69
Siemens
20
240
QT1-2020
QT1-2020
In Stock
From
$102.88
Siemens
20
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.