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
Q4L3400-GRY
Q4L3400-GRY
In Stock
From
$222.22
Square D
-
-
QO125AFI
QO125AFI
In Stock
From
$25.91
Square D
-
-
QO125CAFI
QO125CAFI
In Stock
From
$25.91
Square D
-
-
QO1520CP
QO1520CP
In Stock
From
$19.54
Square D
-
-
QO2020CP
QO2020CP
In Stock
From
$15.95
Square D
-
-
QO230GFIC
QO230GFIC
In Stock
From
$171.34
Square D
-
-
QO250EM
QO250EM
In Stock
From
$0.02
Square D
-
-
QO250GFICP
QO250GFICP
In Stock
From
$184.36
Square D
-
-
QO3205WN
QO3205WN
In Stock
From
$0.02
Square D
-
-
QO3305WN
QO3305WN
In Stock
From
$0.02
Square D
-
-
QO330ML2
QO330ML2
In Stock
From
$433.90
Square D
-
-
QOB3505238
QOB3505238
In Stock
From
$113.93
Square D
-
-
QOUR270
QOUR270
In Stock
From
$36.34
Square D
-
-
RJA361200CU44A
RJA361200CU44A
In Stock
From
$38,070.00
Square D
-
-
RKF36160CU44BBD
RKF36160CU44BBD
In Stock
From
$28,800.00
Square D
-
-
SEFC20S1
SEFC20S1
In Stock
From
$714.29
Square D
-
-
VX5VPS3002
VX5VPS3002
Limited Stock
From
Get Price
Schneider Electric
-
-
NSF150A
NSF150A
In Stock
From
Get Price
Square D
-
-
JLL36250U44XEN
JLL36250U44XEN
In Stock
From
Get Price
Square D
250
600
MHP360008MMT6297
MHP360008MMT6297
Limited Stock
From
Get Price
Square D
-
600
PGA36120U64AE1AABCYP
PGA36120U64AE1AABCYP
In Stock
From
Get Price
Square D
1200
600
C60HD-D4
C60HD-D4
Limited Stock
From
Get Price
Schneider Electric
-
-
17416
17416
In Stock
From
Get Price
Schneider Electric
-
-
23849
23849
Limited Stock
From
Get Price
Schneider Electric
-
-
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.