140U-M6L3-D80
This three-pole circuit breaker is rated for 800 Amps. It offers a thermal trip range from 200 to 800 Amps and has a braking capacity ranging between 60 and 69 kA. The unit operates effectively in tem
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4.9
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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.
140U-K6D3-D40-MU
The Allen-Bradley 140U-K6D3-D40-MU Circuit Breaker is a 140G Molded Case Circuit Breaker (MCCB). It is a K-Frame circuit breaker with a rated current of 400 Amps and it has a 3 poles configuration.
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5.0
140U-D6D3-B20
This circuit breaker features a size-D frame and incorporates thermal magnetic protection with fixed options for both thermal and magnetic trips. With an interrupt rating of 100 kA, this unit can hand
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4.6
140U-L-PAD4
This plug-in adapter facilitates a four-pole configuration and is UL approved for reliable performance in switchboards and power distribution systems. It features a black color finish and supports ver
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5.0
140U-J6D3-D15-A
The 140U-J6D3-D15-A circuit breaker is an IEC rated circuit breaker. It has a voltage rating of 400 to 480 Volts AC.
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4.8
140U-JD0D3-D20
This circuit breaker operates within a frequency range of 50 to 60 Hz and uses a thermal magnetic trip unit. The protection system includes fixed thermal and adjustable magnetic features, ensuring rel
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140U-JD6D3-D20
The Allen-Bradley 140U-JD6D3-D20 circuit breaker has an interrupting rating of 60 to 69 kiloAmps and a continuous current rating of 200 Amps. The circuit breaker includes thermal magnetic/adjustable m
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140U-H6C3-C50-A-MT
The 140U-H6C3-C50-A-MT molded case circuit breaker is available through the Bulletin 140U series by Allen-Bradley. The circuit breaker is built with an H frame and it has three poles. The unit has 125
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4.7
140U-H-FCX06
This mechanism is crafted from non-metallic materials and is compatible with 140M-H motor circuit breakers. It incorporates an operating handle designed for flange mounting, enabling straightforward i
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140U-J2D3-D25
The 140U-J2D3-D25 Molded Case Circuit Breaker is a high-performance compact circuit breaker from Allen-Bradley/Rockwell Automation. It has a size J frame, 3 poles, and 250 Amps of frame current. The r
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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.