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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
ET200M
ET200M
Limited Stock
From
Get Price
Siemens
-
-
ET225-200A
ET225-200A
In Stock
From
$374.92
Siemens
-
-
ET225-3150
ET225-3150
In Stock
From
$470.10
Siemens
-
-
ETH5650
ETH5650
In Stock
From
$415.84
Siemens
-
-
ETI-3807
ETI-3807
In Stock
From
$72.50
Siemens
-
-
ETI-3808
ETI-3808
In Stock
From
$77.67
Siemens
-
-
ETI-4065
ETI-4065
In Stock
From
$180.94
Siemens
-
-
FHOEC036WS
FHOEC036WS
In Stock
From
$477.49
Siemens
-
-
FHOH4
FHOH4
In Stock
From
$1,444.54
Siemens
-
-
FHOS06R
FHOS06R
In Stock
From
$299.98
Siemens
-
-
FJ3M150
FJ3M150
In Stock
From
$374.58
Siemens
-
-
G10A
G10A
Limited Stock
From
Get Price
Siemens
-
-
HDK3T060
HDK3T060
In Stock
From
$1,085.24
Siemens
-
-
HDP3M150L
HDP3M150L
In Stock
From
$4,217.92
Siemens
-
-
HFK3V250
HFK3V250
In Stock
From
$6,900.00
Siemens
-
-
I0204ML1125CU
I0204ML1125CU
In Stock
From
$54.55
Siemens
-
-
I2E30MC250C
I2E30MC250C
In Stock
From
$385.02
Siemens
-
-
ITEF-3100
ITEF-3100
In Stock
From
$315.99
Siemens
-
-
JL3-F175
JL3-F175
In Stock
From
$680.00
Siemens
-
-
L3B300
L3B300
In Stock
From
Get Price
Siemens
300
600
MBKBL1A
MBKBL1A
In Stock
From
$147.82
Siemens
-
-
P2100-M
P2100-M
In Stock
From
$68.53
Siemens
-
-
Q215AFCP
Q215AFCP
In Stock
From
$242.34
Siemens
-
-
Q230GFHH
Q230GFHH
In Stock
From
Get Price
Siemens
30
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.