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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
NFNF36150
NFNF36150
In Stock
From
$1,112.57
Merlin Gerin
150
600
NFNF36175
NFNF36175
In Stock
From
$1,745.56
Square D
175
600
NFNF36200
NFNF36200
In Stock
From
$1,523.51
Schneider Electric
200
600
NFNF36225
NFNF36225
In Stock
From
$1,362.39
Merlin Gerin
225
600
NFNF36250
NFNF36250
In Stock
From
Get Price
Merlin Gerin
250
600
NFNL36125
NFNL36125
In Stock
From
$355.45
Merlin Gerin
125
600
NFNL36150
NFNL36150
In Stock
From
$1,467.07
Merlin Gerin
150
600
NFNL36200
NFNL36200
In Stock
From
$1,682.95
Merlin Gerin
200
600
NJHF36400E20
NJHF36400E20
In Stock
From
$1,001.12
Merlin Gerin
400
600
NJNF36400E20
NJNF36400E20
In Stock
From
$2,567.84
Square D
400
600
NS100H-2P
NS100H-2P
In Stock
From
$425.46
Square D
100
690
NSF150NA
NSF150NA
In Stock
From
$1,847.51
Schneider Electric
150
600
NSF250NA
NSF250NA
In Stock
From
$3,580.15
Schneider Electric
250
600
NSJ250N
NSJ250N
In Stock
From
$138.17
Merlin Gerin
250
600
NSJ400HC
NSJ400HC
In Stock
From
$433.01
Merlin Gerin
400
600
NSJ600HC
NSJ600HC
In Stock
From
$610.99
Merlin Gerin
600
600
NSJ600L
NSJ600L
In Stock
From
$2,090.00
Merlin Gerin
600
600
CF125N
CF125N
In Stock
From
$749.06
Merlin Gerin
125
480
CK1200N-4P
CK1200N-4P
In Stock
From
$4,030.78
Merlin Gerin
1200
600
18425
18425
Limited Stock
From
Get Price
Merlin Gerin
100
440
18438
18438
Limited Stock
From
Get Price
Merlin Gerin
10
440
18446
18446
Limited Stock
From
Get Price
Schneider Electric
80
440
18459
18459
Limited Stock
From
Get Price
Merlin Gerin
125
440
18469
18469
Limited Stock
From
Get Price
Merlin Gerin
100
440
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.