140U-HS4E
This disconnect switch meets various environmental standards with its NEMA TYPE 3R/3/12/4/4X enclosure rating. The unit can operate at temperatures ranging from 0 to 40 degrees Celsius and can be stor
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Allen Bradley 140U MCB
The Allen Bradley 140U MCB series is a series of current-limiting molded-case circuit breakers designed to meet a wide range of safety standards. The 140U circuit breakers are highly compact, and they can be customized with field-installed accessories. These accessories include load terminal covers and feeder terminals. The 140U circuit breakers are suitable for main circuit protection applications and branch circuit protection applications. The interrupting capacity of these breakers ranges from 18 to 100 kA.
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Browse available units in our catalog of 140U MCB.
140UT-D7D2-B60
Featuring two poles, this circuit breaker is designed for DIN-rail mounting and operates at frequencies of 50/60 Hz. It utilizes a thermal-magnetic trip mechanism and provides a breaking capacity of 6
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140UT-D7D2-B80
This circuit breaker operates efficiently at 480Y/277 VAC and is suitable for use in 50/60 Hz frequency applications. The B-curve characteristic ensures it trips at a rate conducive to protecting elec
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140UT-D7D2-C25
This 2-pole circuit breaker is optimized for use in branch circuits and is capable of handling frequencies of 50 or 60 Hz. It utilizes a fixed adjustment method and features a current-limiting trip ty
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140U-G2C3-C70
This 140U series breaker is designed with a G Frame and incorporates three poles. It features fixed thermal protection and employs a thermal-magnetic trip mechanism. The unit has an impressive interru
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140U-H2C3-C30
This unit features three poles and can handle an interrupting current of 25 kA. Constructed with a durable molded plastic material, it is suitable for bolt-on mounting. The breaker incorporates both l
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140U-H3C3-C40-A
This molded case circuit breaker features a thermal magnetic trip unit, ensuring reliable protection against long time thermal overloads and instantaneous faults. Rated to handle short circuits up to
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140U-H-SND
This molded case circuit breaker belongs to the H-frame size category and supports operating frequencies between 50 Hz and 60 Hz. It is capable of functioning in environments with humidity levels reac
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140U-H6C3-C35-B
This circuit breaker features a fixed magnetic trip mechanism and offers a high breaking capacity interrupting class. It mounts easily in panels and is rated for an interrupt capacity of 65 kA at 480
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140U-H6C3-C90-A
This circuit breaker offers a 65 kA interrupt rating at 480 volts, ensuring robust protection for electrical systems. The trip unit employs thermal magnetic technology for reliable operation. It featu
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About 140U MCB
The 140U MCB series of molded case circuit breakers from Allen-Bradley/Rockwell Automation features circuit breakers that are listed for global applications. The 140U MCB circuit breakers, like other molded case circuit breakers, are used in a system to provide protection against overcurrents as well as short circuit protection. Note that a short circuit can reach a current of up to 100,000 Amps. To provide reliable protection, molded case circuit breakers have an arc chamber which surrounds the switching contacts. The chamber is made of splitter plates and chutes which help in drawing the arc away from the contacts during a short circuit. An arc is formed by opening the contacts. These breakers provide up to 6 times higher interrupting ratings than other miniature breakers. The Allen-Bradley 140U molded-case circuit breakers also include accessories such as load terminal covers, feeder terminals, eco connection modules, and extension shaft support.
The Allen-Bradley 140U MCB circuit breakers are current limiting circuit breakers that are listed by the Underwriters Laboratories. This series of breakers have a high interrupting capacity and they are suitable for backfeeding at a voltage rating of 240 Volts and 480Y/277V. The 140U MCB series has breakers with a current rating of between 0.5 Amps and 30 Amps. Also, these breakers are available in either 2 or 3 poles. The 140U MCB circuit breakers are 100% rated at up to 10 Amps. The 140U MCB series is compliant with standards such as the CSA C22.2, No.5, IEC/EN 60947-1, IEC/EN 60947-2, and UL 489. Under the UL and the CSA standards, this family of circuit breakers has a rated insulation voltage of 600 Volts. The 140U MCB series has mechanical and electrical lifespans of 100,000 and 10,000 operations, respectively. These circuit breakers have a rated operating ambient temperature of between -40 degrees Celsius and 80 degrees Celsius. One of the benefits of these breakers is that they come with a compact design that consists of a width of 45 millimeters, a height of 102 millimeters, and a depth of 85 millimeters, which help the breakers save panel space.