The 140U-JDTD3-D20-M circuit breaker is an MCBB T/M circuit breaker designed and manufactured by Allen-Bradley/Rockwell Automation. The unit is part of the 140U product series that features inverse time circuit breakers that can be combined with other components such as a starter or soft starter and variable frequency AC drive units. These thermal-magnetic circuit breakers are available with non-adjustable and adjustable magnetic trip protection and they are offered with different frame sizes. The availability of different models makes it easy for the users to find the right circuit breaker for almost every industrial application. The molded case circuit breakers apply an inverse time delay to industrial components like control panels and they are packaged in insulated housings with small dimensions.

The 140U-JDTD3-D20-M molded case circuit breaker comes with a JD frame and thermal-magnetic protection with an adjustable magnetic trip. The magnetic trip range of the unit is 1250 to 2500 Amps. The 140U-JDTD3-D20-M circuit breaker has a continuous current rating of 200 Amps and interrupting rating/breaking capacity of 30 to 39 kiloAmps. This circuit breaker unit has 3 poles and a current rating of 100 rr0 Amps. The device includes many factory-installed functions that are crucial for proper protection from overcurrent, short-circuit, and other unwanted events that may damage the equipment. The 140U-JDTD3-D20-M circuit breaker has an IP2X protection rating when it is wired and it can be used within a temperature range of -25 to 60 degrees Celsius (-13 to 140 degrees Fahrenheit). The CE marked unit is certified by the UL/CSA standards and it has a specified storage temperature range of -40 to 80 degrees Celsius (-40 to 176 degrees Fahrenheit).