140U-H0C3-C40
This molded case circuit breaker is rated for a frame capacity of 125 A with a thermal and magnetic protection mechanism. It has three poles and is capable of interrupting current in the range of 30 t
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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-I0C3-C15
This circuit breaker has a three-pole configuration and is classified under the I-frame size. Interrupting ratings include 65 kA at 480 volts and 100 kA at 240 volts. The unit utilizes a thermal-magne
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140U-K6G3-D40
The Allen-Bradley 140U-K6G3-D40 Molded Case is a 140G Molded Case Circuit Breaker. It is a K-Frame circuit breaker with a rated current of 400 Amps and 3-pole configuration. It provides Electronic LSG
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140U-K3D3-D20
The Allen-Bradley 140U-K3D3-D20 Circuit Breaker is a UL listed and 489 listed Molded Case Circuit Breaker with a K-Frame rating. It has a 35 kilo-Amps (KA) Interrupting Rating at 480 Volts AC and a Co
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140U-JDTD3-D25-M
The 140U-JDTD3-D25-M circuit breaker is a thermal-magnetic circuit breaker that has been designed to operate with motors and different industrial equipment that requires branch circuit, overload, and
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4.8
140U-JTD3-D12
The 140U-JTD3-D12 circuit breaker is a molded-case circuit breaker that has been designed and distributed by the Allen-Bradley company. This breaker protects machines against the current anomalies tha
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4.4
140U-K6D3-D17
The Allen-Bradley 140U-K6D3-D17 Circuit Breaker is a 140G Molded Case Circuit Breaker (MCCB). It is a K-Frame circuit breaker with a rated current of 175 Amps and a 3-pole configuration.
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140U-LTD3-D30
This molded case circuit breaker supports 3 poles and offers a thermal trip rating set at 300 A. The magnetic trip range is adjustable between 1500 to 3000 A. Designed to operate effectively in enviro
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140U-M6D3-D70
The Allen-Bradley 140U-M6D3-D70 Molded Case Circuit Breaker comes with a Size M frame, 3 poles, and 800 Amps of frame current. It has 690 or 600 Volts AC of rated operational voltage, 800 Amps of curr
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140U-J6D3-D22
Designed to accommodate a frame rating of 250 amperes, this circuit breaker supports a rated operational current of 225 A. It maintains a breaking capacity of 70 kA at 400 volts and 65 kA at 480 volts
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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.