The 140U-JD6D3-C70 circuit breaker is an Allen-Bradley 140U series circuit breaker in a JD-frame enclosure. It has a current rating of 150 Amps and a voltage rating of 480 Volts AC. The interrupt rating is 65 kiloamps. The 140U-JD6D3-C70 circuit breaker is a 3-pole molded case circuit breaker. An integrated fixed thermal-magnetic trip unit is available on the breaker. The trip current range is 750 to 1500 Amps. The mechanical specifications for the 140U-JD6D3-C70 circuit breaker include dimensions of 10 x 4.56 x 4.12 inches. The Horsepower ratings for the 140U-JD6D3-C70 circuit breaker are as follows: 30 Horsepower at 220 Volts AC, 40 Horsepower at 230 Volts AC, 60 to 75 Horsepower at 480 to 415 Volts AC, and 75 Horsepower at 460 Volts AC.

Allen-Bradley Bulletin 140U series breakers are available for 15 to 1200 Amps current ratings. Both thermal-magnetic and electronic trip units are available. Different versions of the electronic trip modules are available to suit different requirements, such as LS (long time / short time), LSI (long time / short time / high instantaneous), LSG (long time / short time / ground fault), and LSIG (long time / short time / high instantaneous / ground fault). Breakers with thermal-magnetic trip units are rated for a 15 to 800 Amps current range and breakers with electronic trip units are available with the 70 to 1200 Amps range. The 140U series circuit breakers support both factory installable and field-installable accessories. The 140U-JD6D3-C70 circuit breakers should only be installed by trained technicians. Guidelines and safety precautions according to the relevant electrical and local codes should be followed during the installation process.