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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.
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Part Number
PRICE
Manufacturer
HMCPS030H1CA01
HMCPS030H1CA01
In Stock
From
$1,331.18
Eaton
IQMDCPM
IQMDCPM
In Stock
From
$1,408.31
Eaton
JA1S-D3-A-0010-02E
JA1S-D3-A-0010-02E
In Stock
From
$6.74
Eaton
JA1S-D3-A-0015-02E
JA1S-D3-A-0015-02E
In Stock
From
$16.02
Eaton
JDB3250M01
JDB3250M01
In Stock
From
$3,226.54
Eaton
JGE310032GCA2S4
JGE310032GCA2S4
In Stock
From
$4,386.43
Eaton
JW4250K
JW4250K
In Stock
From
$6,443.80
Eaton
JW4250V
JW4250V
In Stock
From
$9,182.92
Eaton
KD2400KW01
KD2400KW01
In Stock
From
$8,366.06
Eaton
KD3400KX15Y18
KD3400KX15Y18
In Stock
From
$4,824.78
Eaton
KD3400KZ02
KD3400KZ02
In Stock
From
$1,907.64
Eaton
KDPV4175WF01
KDPV4175WF01
In Stock
From
$6,410.47
Eaton
KDPV4225WF01
KDPV4225WF01
In Stock
From
$7,268.97
Eaton
KDPV4300WF01
KDPV4300WF01
In Stock
From
$7,332.60
Eaton
KPR3B
KPR3B
In Stock
From
$48.89
Eaton
KW4315V
KW4315V
In Stock
From
$8,280.99
Eaton
LZMB1-4-ASF50-I
LZMB1-4-ASF50-I
Limited Stock
From
Get Price
Eaton
LZMB2-4-ASF250/160-I
LZMB2-4-ASF250/160-I
Limited Stock
From
Get Price
Eaton
LZME1-ASF100-I
LZME1-ASF100-I
Limited Stock
From
Get Price
Eaton
MBT48B200BTS
MBT48B200BTS
In Stock
From
$1,897.89
Eaton
MDN6083LEA-08MMA-NAN4Y-NKLWX
MDN6083LEA-08MMA-NAN4Y-NKLWX
In Stock
From
$8,127.12
Eaton
MP4010
MP4010
In Stock
From
$4,987.20
Eaton
N1-160
N1-160
Limited Stock
From
Get Price
Eaton
NS2-160-BT-NA
NS2-160-BT-NA
In Stock
From
$1,228.97
Eaton
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.