The 140U-K-EA2 contact is an auxiliary contact that is manufactured by Allen-Bradley/Rockwell Automation as part of the bulletin 140U product line. It has a K Frame size with a current rating of 400 Amps. This module comes with an auxiliary contact (AX) that electrically indicates the "on" and "off" status of breakers. It also has left and right side mounting locations. The 140U-K-EA2 contact has the 2A/2B configuration type and it is suitable for use with the 140U K-frame molded case circuit breakers. The Bulletin 140U molded case circuit breakers have a thermal-magnetic current range of 15 to 800 Amps, an electronic current range of 70 to 1200 Amps, and a molded case switches current rate of 125 to 1200 Amps. Other features of these modules include field or factory-installed accessories, flex cable operating mechanisms, rotary variable-depth operating mechanisms, and high interrupting ratings in compact dimensions.

The Allen-Bradley 140U-K-EA2 auxiliary contact is rated and listed for the UL 489, CSA 22.2, and IEC 60947-2 standards. The product line is approved for universal applications around the world. Other specifications include interrupting ratings of 65 kiloamps at 380 to 415 Volts, 65 kiloamps at 480 Volts, 35 kiloamps at 600 Volts, and 13 kiloamps at 690 Volts. Circuit breakers with the K Frame size, including the 140U-K-EA2 contact, have field-installable internal control modules, rotary operators, flex cable operators, and molded case switches. There are different options for the electronic ratings, including a long time or short time settings, long time or short time or high instantaneous settings, long time or short time or ground fault settings, and a long time or short time or high instantaneous or ground fault setting.