Allen Bradley
140U-H-RMX
This rotary operating mechanism operates with variable-depth control. It includes an extension shaft with a 1/4 inch square size, available in lengths of 12 or 21 inches. The handle material is finish
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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-H0C3-D12
As a member of the 140U MCB series, this circuit breaker features three poles and utilizes a fixed thermal and magnetic protection mechanism. It complies with several safety standards, including UL, C
From $3,898In Stock Ships Today - Allen Bradley
140U-H6C3-C70-D
This circuit breaker is mounted on DIN rails and features box lug connections. With an interrupt rating of 65 kA at 480 V, it is capable of managing significant fault currents. The thermal magnetic tr
From $928Available - Allen Bradley
140UE-H1C3-C40
This device features three poles and is built with fixed thermal and magnetic protection types. The breaker can handle breaking capacities ranging from 13 to 25 kA at 220 to 240 V AC and 9 to 18 kA at
From $429Available - Allen Bradley
140U-I6C3-C40-M
The 140U series circuit breaker is designed with a frame size classified as I-Frame, employing three poles for effective distribution in 3-phase systems. It boasts an interrupt rating of 65 kA at 480
From $234Available - Allen Bradley
140U-J-FCX06
This photoelectric sensor features a sensing style characterized as sharp-cutoff diffuse, with a detection range of 76 mm. The 140U-J-FCX06 operates in a light-on mode and has an output format compati
From $462Available - Allen Bradley
140UT-D7D2-B60
Featuring two poles, this circuit breaker is designed for DIN-rail mounting and operates at frequencies of 50/60 Hz. It utilizes a thermal-magnetic trip mechanism and provides a breaking capacity of 6
AvailableCall - Allen Bradley
140U-N6L3-E12
This 3-pole circuit breaker features a short-time protection type and boasts an interrupting capacity between 60 kA and 69 kA. It is suitable for storage conditions ranging from 0 °C to 40 °C and can
From $5,523Available - Allen Bradley
140U-H-FCX04
This operating mechanism is suitable for NEMA-style flange enclosures rated Type 1, 3, 4, 4X, and 12. It has an impressive IP66 rating, indicating dust and water resistance. Operating temperatures ran
AvailableCall - Allen Bradley
140U-J6D3-D10
This circuit breaker features a thermal-magnetic trip type and has an interrupting capacity of 65 kA. It is designed for a frequency range of 50 to 60 Hz and is housed in a J-frame size. The terminal
From $875In 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.