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
NC100H-D16A
NC100H-D16A
In Stock
From
$89.51
Schneider Electric
NE-3910
NE-3910
In Stock
From
$10.72
Schneider Electric
NEG311015
NEG311015
In Stock
From
$302.77
Schneider Electric
NJHN36000S40ABSO
NJHN36000S40ABSO
In Stock
From
$2,493.07
Schneider Electric
NKS100R063AC3P
NKS100R063AC3P
In Stock
From
$165.68
Schneider Electric
NQOD430M100CUMX
NQOD430M100CUMX
In Stock
From
$659.35
Schneider Electric
NS1250H4PMF5 0E
NS1250H4PMF5 0E
Limited Stock
From
Get Price
Schneider Electric
NS1600NA4PMF
NS1600NA4PMF
Limited Stock
From
Get Price
Schneider Electric
NS800H4PMF5.0E
NS800H4PMF5.0E
Limited Stock
From
Get Price
Schneider Electric
NS800N4PEDO2.0
NS800N4PEDO2.0
Limited Stock
From
Get Price
Schneider Electric
NSNL250
NSNL250
Limited Stock
From
Get Price
Schneider Electric
NSNL630
NSNL630
Limited Stock
From
Get Price
Schneider Electric
NSX100-160-250-F/N/H/NA
NSX100-160-250-F/N/H/NA
Limited Stock
From
Get Price
Schneider Electric
PJA36080U31AJA
PJA36080U31AJA
In Stock
From
$2,416.67
Square D
PJL36120U31ASA
PJL36120U31ASA
In Stock
From
$1,197.00
Square D
PJL36120U31ASK
PJL36120U31ASK
In Stock
From
$1,197.00
Square D
Q2MT3225MT
Q2MT3225MT
In Stock
From
$105.00
Schneider Electric
QF1520
QF1520
In Stock
From
$31.07
Schneider Electric
QF21520
QF21520
In Stock
From
$97.15
Schneider Electric
QF22020
QF22020
In Stock
From
$81.34
Schneider Electric
QO-1-16
QO-1-16
Limited Stock
From
Get Price
Schneider Electric
QO106C10RCBO30F
QO106C10RCBO30F
Limited Stock
From
Get Price
Schneider Electric
QO106EB10
QO106EB10
Limited Stock
From
Get Price
Schneider Electric
QO106EC6
QO106EC6
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.