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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
UBIZ50
UBIZ50
In Stock
From
$40.64
Zinsco
50
240
UBIF2125NB
UBIF2125NB
In Stock
From
$567.72
Connecticut Electric
125
120
UBIF40N
UBIF40N
In Stock
From
$23.66
Connecticut Electric
40
240
UBITBFP1502
UBITBFP1502
In Stock
From
$367.04
Connecticut Electric
150
240
UBIZ0225
UBIZ0225
In Stock
From
$95.75
Connecticut Electric
25
240
A115LR
A115LR
In Stock
From
$58.04
Challenger
20
120
UBIF030N
UBIF030N
In Stock
From
$27.06
Connecticut Electric
30
240
UBIZ15B
UBIZ15B
In Stock
From
$43.98
Connecticut Electric
15
240
UBIZ20B
UBIZ20B
In Stock
From
$82.24
Connecticut Electric
20
240
UBIZ30B
UBIZ30B
In Stock
From
$78.94
Connecticut Electric
30
240
UBIA15NI
UBIA15NI
In Stock
From
$50.95
Connecticut Electric
15
120
UBIF0235N
UBIF0235N
In Stock
From
$98.30
Federal Pacific
35
240
UBIF20NB
UBIF20NB
In Stock
From
$62.26
Connecticut Electric
20
120
UBIF2100NB
UBIF2100NB
In Stock
From
$517.81
Connecticut Electric
100
120
UBIF270NB
UBIF270NB
In Stock
From
$251.59
Connecticut Electric
70
120
UBIF30NB
UBIF30NB
In Stock
From
$90.92
Connecticut Electric
30
120
UBIF50N
UBIF50N
In Stock
From
$36.13
Connecticut Electric
50
240
UBIP260
UBIP260
In Stock
From
$74.63
Pushmatic
60
240
UBITB140
UBITB140
In Stock
From
$6.30
Connecticut Electric
40
240
UBITBA115L
UBITBA115L
In Stock
From
$49.32
Connecticut Electric
15
120
UBITBA130R
UBITBA130R
In Stock
From
$43.14
Connecticut Electric
30
120
UBIA215NI
UBIA215NI
In Stock
From
$172.72
Connecticut Electric
15
240
UBIA40NI
UBIA40NI
In Stock
From
$51.16
Connecticut Electric
40
120
UBIA50NI
UBIA50NI
In Stock
From
$61.76
Connecticut Electric
50
120
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.