Allen Bradley
140UE-M7X3
This model features three poles and operates at frequencies between 50 Hz and 60 Hz. It is designed to function effectively in a temperature range from -25°C to 75°C, while supporting storage conditio
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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 140U MCB
Browse available units in our catalog of 140U MCB.
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140U-D6D2-C20
The 140U-D6D2-C20 features a dual-pole design, making it suitable for specific circuit configurations. It operates within temperatures of -25 to 60 degrees Celsius and can be stored at temperatures ra
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140U-JD3D3-D12
This circuit breaker operates with three poles and can handle frequencies from 50 Hz to 60 Hz. It is suitable for environments with operating temperatures ranging from -25°C to 60°C and can be stored
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140U-K0D3-D12
The 140U-K0D3-D12 circuit breaker is a K-frame circuit breaker that has been designed to protect any industrial process with electrical circuits and different kinds of connections among the equipment.
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140U-L3D3-D60
The device supports three poles and has a minimum interrupting rating of 30 kA, ideally maxing out at 39 kA. Its operational temperature range spans from -25°C to 60°C, while it can be stored in envir
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140U-LTD3-D50
This circuit breaker operates at a rated current of 500 A and is designed with three poles. The magnetic trip range is adjustable, accommodating currents between 2500 and 5000 A. The operational tempe
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140UE-N7H3-E12
The 140UE-N7H3-E12 circuit breaker is an N-Frame IEC molded case circuit breaker. The 140UE-N7H3-E12 circuit breaker is a three-pole circuit breaker rated for 1250 Amps and it comes with electronic LS
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140U-LTD3-D40
This circuit breaker has three poles and provides robust protection with a breaking capacity of 35 kA at 480V. It can operate within a frequency range of 50 Hz to 60 Hz. The 140U-LTD3-D40 is built to
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140UT-D7D3-B80
With a substantial breaking capacity of 65 kA, this circuit breaker operates at a rated current of 8 amps. It supports voltages up to 480Y/277 VAC and is suitable for both 50 and 60 Hz frequency appli
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140U-Q6D3-D35
Operating with a voltage rating of 400 or 480 V, this circuit breaker is rated for a maximum ambient temperature of 40°C and a minimum of 0°C for effective operation. The storage conditions allow for
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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.