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.
Browse available units in our catalog of 140U MCB.
The 140U-JDTD3-D22-M circuit breaker is a circuit breaker that has been designed and manufactured by Allen Bradley. This breaker belongs to the 140U series of circuit breakers. Circuit breakers are wi
This circuit breaker is configured with three poles and maintains a maximum operational voltage of 690 V AC. It has a fixed thermal trip setting at 500 A, ensuring accurate and reliable performance. T
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
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
The Allen Bradley 140U-I6C3-C90 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 curren
This 3-pole circuit breaker features a thermal-magnetic protection system. It includes a fixed thermal trip element and an adjustable magnetic trip for precise control. Interruption ratings are 35 kA
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.
The 140U-H6C3-D12-A-MT circuit breaker is a thermal-magnetic circuit breaker with a double protection mechanism that consists of a fixed-thermal and fixed-magnetic mechanism. These two mechanisms empl
This circuit breaker features a 3-pole configuration and a current rating of 250 A. Its interrupting capacities are rated at 200 kA for 240 VAC, 100 kA for 480 VAC, 35 kA for 600 VAC, and 22 kA for 25
The 140U-JD6D3-C70 is a 3-pole molded case circuit breaker with a 70 Amp continuous current rating. It can handle up to 600V AC (UL rating) and 690V AC (IEC rating). With interrupting ratings of 100 k
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.