140U-K0D3-D20
The 140U-K0D3-D20 circuit breaker is a thermal-magnetic circuit breaker that has been designed and distributed by Allen-Bradley/Rockwell Automation. This breaker has all the necessary components to pr
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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.
140U-I6C3-C20-M
The Allen-Bradley 140U-I6C3-C20-M Circuit Breaker is a UL listed circuit breaker with a fixed thermal/fixed magnetic trip unit. It has a 65 kA interrupting rating at 480 Volts AC and a continuous curr
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140U-JD3D3-D15
This circuit breaker features a J Frame size and is structured with three poles. Its interrupting capacity is rated at 35 kA at 480V AC. This model utilizes a thermal magnetic trip type, with a magnet
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140U-JD3D3-D22
This molded case circuit breaker is designed to handle continuous currents of 225 A. Featuring three poles and a JD-frame size, it offers a rated voltage of 400/480 VAC and has an interrupting capacit
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140U-K0D3-D40
The Allen-Bradley 140U-K0D3-D40 Circuit Breaker is a UL listed 489 listed Molded Circuit Breaker with a K-Frame rating. It has a 100 kilo-Amps (KA) Interrupting Rating at 480 Volts AC and a continuous
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140U-KTD3-D40
This molded case circuit breaker from the 140U series has three poles and is built on a K Frame design. The fixed thermal trip mechanism is complemented by an adjustable magnetic trip, providing flexi
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4.8
140U-JDTD3-D20-M
The 140U-JDTD3-D20-M molded circuit breaker is a Bulletin 140U component designed by Allen-Bradley. The unit features a JD frame and a continuous current rating of 200 Amps. The interrupting rating/br
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140U-K6D3-D40-A
The Allen-Bradley 140U-K6D3-D40-A Circuit Breaker is 140G Molded Case Circuit Breaker. It a K-Frame circuit breaker with a rated current of 400 Amps and a 3-pole configuration.
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140U-H6C3-C50-B
The Allen-Bradley 140U-H6C3-C50-B molded case circuit breaker is designed with Frame H and it has a current rating of 125 Amps. The interrupting rating of the circuit breaker is 60 to 69 kiloAmps and
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140U-H6C3-C80-A-MT
The Allen-Bradley 140U-H6C3-C80-A-MT Circuit Breaker is a Molded Case Circuit Breaker (MCCB) under the 140U series. It has an H Frame with a frequency rating of 50 to 60 Hertz and a current rating of
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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.