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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4.3
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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.
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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4.9
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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4.6
140UE-M7D3-D40
This circuit breaker is designed to handle a current rating of 800 A with an interrupting capacity between 70 to 79 kA. Its protection scheme includes both fixed thermal and adjustable magnetic respon
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4.5
140U-I3C3-C35
The Allen-Bradley 140U-I3C3-C35 Circuit Breaker is a 140U Molded Case Circuit Breaker (MCCB). It has a current rating of 35 Amps, a voltage rating of 480 Volts, and an interrupt rating of 35 kA.
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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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4.9
140U-KTH3-D40
This circuit breaker features electronic protection with LSI characteristics for long, short, and high instant trip settings. The thermal trip can be adjusted between 200 and 400 Amps, while the magne
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5.0
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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4.6
140U-MTD3-D45
With a rated current of 450 A, the 140U-MTD3-D45 includes three poles. Thermal trip settings can be adjusted at 450 A, while the magnetic trip can be set between 2250 and 4500 A. This device can funct
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140U-M6S3-D80
The 140U-M6S3-D80 switch is an M-frame molded case switch (isolator). The 140U-M6S3-D80 switch is a Bulletin 140U device which has three poles with 8000 Amps of magnetic trip current and 800 Amps of 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.