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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
MP120GF
MP120GF
In Stock
From
$51.48
Siemens
20
120
MP130
MP130
In Stock
From
$64.04
Siemens
30
120
MP1515
MP1515
In Stock
From
$12.73
Murray
15
240
MP2125
MP2125
In Stock
From
$45.79
Siemens
125
240
MP315
MP315
In Stock
From
$27.43
Siemens
15
240
MP330
MP330
In Stock
From
$159.46
Siemens
30
240
MP115GFA
MP115GFA
In Stock
From
$330.27
Murray
15
120
MP2100
MP2100
In Stock
From
$154.50
Siemens
100
240
MP115
MP115
In Stock
From
$18.63
Murray
15
120
MP140
MP140
In Stock
From
$3.83
Murray
40
120
MP150
MP150
In Stock
From
$2.39
Murray
50
120
MP290
MP290
In Stock
From
$165.05
Siemens
90
240
MP3030
MP3030
In Stock
From
$11.98
Murray
30
240
MP350
MP350
In Stock
From
$55.93
Murray
50
240
MP370
MP370
In Stock
From
$81.09
Siemens
70
240
MP2020
MP2020
In Stock
From
$20.60
Murray
20
120
MP230
MP230
In Stock
From
$63.37
Siemens
30
240
MP250GF
MP250GF
In Stock
From
$129.02
Siemens
50
240
MP260
MP260
In Stock
From
$100.30
Siemens
60
240
MP320
MP320
In Stock
From
$19.45
Murray
20
240
MP1515N
MP1515N
In Stock
From
$110.38
Siemens
15
240
EQ9985
EQ9985
In Stock
From
$310.78
Gould
200
240
MM1515
MM1515
In Stock
From
$21.46
Murray
15
120
MQ250
MQ250
In Stock
From
$31.12
Murray
50
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.