140U-I6C3-C50
The Allen-Bradley 140U-I6C3-C50 Circuit Breaker is a UL listed circuit breaker with a fixed thermal and fixed magnetic trip unit. It has a 65 kA interrupting rating at 480 Volts AC and a continuous cu
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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-D6D3-B40
The 140U-D6D3-B40 operates with a 15-20 A Magnetic Trip and a 50/60 Hz Rated Frequency.
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4.8
140U-D6D3-B60
This molded case circuit breaker, part number 140U-D6D3-B60, supports a supply voltage of 480 VAC and offers an interrupt rating of 100 KA. Operating at a rated current of 6.0 A with three poles, it u
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4.9
140U-D6D3-B30
Designed with a D frame size, this circuit breaker has an interrupt capacity of 100 kA, ensuring dependable performance under fault conditions. The unit features fixed thermal and magnetic protection,
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4.9
140U-JD6D3-D22
The Allen-Bradley 140U-JD6D3-D22 circuit breaker has three poles and it comes with Frame JD. The unit is part of the Bulletin 140U series and it operates in combination with a NEMA starter size of 5.
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4.8
140U-H2C3-C60
This three-pole circuit breaker has a rated current of 60 A along with fixed thermal and fixed magnetic trip units. It can handle a magnetic trip rating of 600 A and can operate effectively within a t
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4.7
140U-K6X3
This molded case circuit breaker operates at a maximum rated voltage of 690 VAC. It employs a thermal-magnetic protection type and a rotary mechanism for operation. The device is designed for fixed mo
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140U-D6D2-B80
This circuit breaker has an interrupting rating of 65 kA at 480 VAC, providing significant protection against electrical faults. It uses a thermal-magnetic protection type with a fixed magnetic trip c
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4.7
140U-D6D3-C15
The 140U-D6D3-C15 operates with a 15-20 A Magnetic Trip and a 50/60 Hz Rated Frequency.
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4.3
140U-I6C3-D10
This molded case circuit breaker is designed with an I-frame and provides a continuous rated current of 100 A. With a short circuit interrupting capacity of 65 kA at 480 VAC, it ensures reliable prote
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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.