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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
Amperage
Voltage
ET100330
ET100330
In Stock
From
$215.97
Siemens
-
-
ET2633
ET2633
In Stock
From
$281.34
Siemens
-
-
FHOED036
FHOED036
In Stock
From
$1,504.90
Siemens
-
-
HE3A003Z
HE3A003Z
In Stock
From
$174.09
Siemens
-
-
HQB120
HQB120
In Stock
From
$28.04
Siemens
-
-
NFK3B150L
NFK3B150L
In Stock
From
$6,194.64
Siemens
-
-
S01MN6L72
S01MN6L72
In Stock
From
$1,380.73
Siemens
-
-
SAB80C535N
SAB80C535N
In Stock
From
$62.89
Siemens
-
-
W-G-1.6A-380V
W-G-1.6A-380V
Limited Stock
From
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Siemens
-
-
W-G-6A-380V
W-G-6A-380V
Limited Stock
From
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Siemens
-
-
3RV1411-1CA10
3RV1411-1CA10
Limited Stock
From
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Siemens
-
-
3VF3211-1BW41-0AB1
3VF3211-1BW41-0AB1
Limited Stock
From
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Siemens
-
-
3VF3211-5DS71-0AC2
3VF3211-5DS71-0AC2
In Stock
From
$374.92
Siemens
-
-
3VF3211-6ES71-0AA0
3VF3211-6ES71-0AA0
Limited Stock
From
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Siemens
-
-
3VF5212-1HM41-0AA0
3VF5212-1HM41-0AA0
Limited Stock
From
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Siemens
-
-
3VF9823-1EA01
3VF9823-1EA01
Limited Stock
From
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Siemens
-
-
3WL9111-0AD13-0AA0
3WL9111-0AD13-0AA0
In Stock
From
$157.93
Siemens
-
-
5TE7101
5TE7101
Limited Stock
From
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Siemens
-
-
5TE7513
5TE7513
Limited Stock
From
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Siemens
-
-
5TE7613
5TE7613
Limited Stock
From
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Siemens
-
-
5TE7713
5TE7713
Limited Stock
From
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Siemens
-
-
5TE8411
5TE8411
Limited Stock
From
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Siemens
-
-
KL3B175
KL3B175
In Stock
From
$0.02
Siemens
175
600
P43100M
P43100M
In Stock
From
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Siemens
100
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.