Allen Bradley
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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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.
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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-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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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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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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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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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
From $416In Stock Ships Today - Allen Bradley
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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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
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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
From $234In Stock Ships Today
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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.