140U-K0X3
The Allen Bradley 140U-K0X3 Circuit Breaker is a UL489 listed Molded Case Circuit Breaker Frame with a K-Frame rating. It has an interrupting rating of 100 kilo-Amps (KA) and a voltage rating of 480 V
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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-H3C3-D12
This molded case circuit breaker includes 3 poles and operates at a frequency range of 50 Hz to 60 Hz. It provides exceptional breaking capacities of 85 kA at 220-240 V, 40 kA at 380-415 V, and 25 kA
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4.6
140U-K-FCX06
This flex cable mechanism is crafted for compatibility with K Frame circuit breakers. It operates effectively in conditions with a temperature range of 0°C to 40°C and supports relative humidity level
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4.9
140U-Q6X3
This molded case circuit breaker supports a rated current of 600 A and is configured for three poles, allowing it to serve in critical applications. Its breaking capacities include 100 kA at 220-240 V
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140UE-JTF3-D20
This molded case circuit breaker features a 200 A current rating and operates with three poles. It has a thermal-magnetic trip unit, making it capable of functioning under a maximum operational voltag
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140UE-M5X3
Featuring a strong M-Frame design, this circuit breaker is rated for operational voltages up to 690V AC and an insulation voltage of 1000 VAC. It boasts impressive interrupting capacities: up to 65 kA
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140U-D6D3-B20
This circuit breaker features a size-D frame and incorporates thermal magnetic protection with fixed options for both thermal and magnetic trips. With an interrupt rating of 100 kA, this unit can hand
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4.6
140U-L-PAD4
This plug-in adapter facilitates a four-pole configuration and is UL approved for reliable performance in switchboards and power distribution systems. It features a black color finish and supports ver
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5.0
140UE-JTF3-D25
This molded case circuit breaker is designed for 250 A rated current and operates with three poles. It features thermal magnetic trip technology and is intended for use as a primary means of disconnec
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140U-K-EA2
This auxiliary contact is designed for K-400 Series circuit breakers and is versatile in its mounting options, suitable for installation on either side. It features a current rating of 400 A and suppo
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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.