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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
Q12125
Q12125
In Stock
From
$434.26
Square D
125
240
Q12150
Q12150
In Stock
From
$355.02
Square D
150
240
Q1245
Q1245
In Stock
From
Get Price
Square D
45
240
Q1250
Q1250
In Stock
From
$103.03
Square D
50
240
Q1260
Q1260
In Stock
From
$247.96
Square D
60
240
Q1270
Q1270
In Stock
From
$142.28
Square D
70
240
Q1280
Q1280
In Stock
From
$139.30
Square D
80
240
Q1290
Q1290
In Stock
From
$210.11
Square D
90
240
Q13000S01
Q13000S01
In Stock
From
$112.21
Siemens
30
120
Q13100
Q13100
In Stock
From
$283.74
Square D
100
240
Q13100VH
Q13100VH
Limited Stock
From
Get Price
Square D
100
240
Q1350
Q1350
In Stock
From
$271.08
Square D
50
240
Q1370
Q1370
In Stock
From
$91.19
Square D
70
240
Q1380
Q1380
In Stock
From
$177.44
Square D
80
240
Q1B2100
Q1B2100
In Stock
From
$252.55
Square D
100
240
Q1B240VH
Q1B240VH
In Stock
From
$119.43
Square D
40
240
Q1B3100
Q1B3100
In Stock
From
$377.53
Square D
100
240
Q1B320
Q1B320
In Stock
From
$60.46
Square D
20
240
Q1B360
Q1B360
In Stock
From
$262.62
Square D
60
240
Q1B370
Q1B370
In Stock
From
$302.85
Square D
70
240
Q1B380
Q1B380
In Stock
From
$284.04
Square D
80
240
Q1L120
Q1L120
In Stock
From
$211.26
Square D
20
120
Q1L2100
Q1L2100
In Stock
From
$823.50
Square D
100
240
Q1L270
Q1L270
In Stock
From
$194.55
Square D
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.