140U-D6D2-C25
This molded case circuit breaker consists of 2 poles and incorporates fixed thermal and adjustable magnetic protection. The device is effective within a temperature range of -25 to 60°C and can be sto
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4.6
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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-L0D3-D40
This circuit breaker features three poles and provides fixed thermal and adjustable magnetic protection types. It operates effectively between temperatures of -25°C and 60°C and can be stored at tempe
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5.0
140U-D6D3-A50
This circuit breaker operates with a magnetic trip setting between 15 and 20 times the rated current. It delivers an ultimate breaking capacity of 100 kA at voltages between 400 and 415 VAC, and 65 kA
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4.8
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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5.0
140UT-D7D3-C30
The Allen Bradley 140UT-D7D3-C30 circuit breaker features three poles and is designed for branch circuit protection. This thermal-magnetic unit has a fixed adjustment method and a C-curve trip charact
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5.0
140UT-D7D3-B60
This circuit breaker operates efficiently in both 50 Hz and 60 Hz environments. It is designed with three poles and rated for a current of 6 Amps, making it suitable for different electrical configura
Available
5.0
140UT-D7D3-C12
The 140UT-D7D3-C12 features a fixed magnetic trip and is rated for 12 Amps with a breaking capacity of 65 kA. This 3-pole circuit breaker is designed for panel mounting and offers current limiting cap
Available
5.0
140U-G2C3-C15
The molded case circuit breaker features a 3-pole configuration and utilizes a thermal-magnetic trip type. It has an interrupting rating of 22 kA and is rated for a maximum voltage of 600 V, making it
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5.0
140UT-D7D3-B20
This 3-pole circuit breaker operates within a frequency range of 50 to 60 Hz and utilizes a standard UL/IEC curve for trip characteristics. It features current-limiting trip type functionality with a
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5.0
140U-H6C3-C25-B
This 3-pole circuit breaker features a high breaking capacity with an interrupt rating of 65 kA at 480 volts. It employs a thermal magnetic trip unit and is designed for panel mount or din rail instal
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5.0
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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.