The Allen-Bradley 140U-J6D3-D15 circuit breaker is a circuit breaker device with an interrupt rating of 70/65 Amps. It is a J Frame circuit breaker with a current rating of 150 Amps. The voltage rating of the circuit breaker is 400 to 480 Volts AC. It can be used with both single-phase and three-phase power supplies. The main function of the circuit breaker is to protect the circuit against overload and short circuit conditions. The breaker comes with factory-installed accessories and it supports flexible cable operating mechanisms. The 140U-J6D3-D15 circuit breaker comes with a rotary variable depth operating mechanism. The breaker supports high interruption ratings. It comes in a compact size which makes it easily portable and that also makes the setup process easy. The breaker measures 3 inches in length, 4 inches in width, and 7 inches in height. The 140U-J6D3-D15 circuit breaker has been certified with the UL, CSA, KEMA, CE, and other industrial standards.

The breaker comes with line and load lug terminals in the front panel. A push-to-trip button is present in the breaker which makes it easy to test the breaker's functionality. The button easily trips the breaker when it is pressed. The 140U-J6D3-D15 circuit breaker is a molded case circuit breaker and it has a conformal coating on the outside. The breaker comes with a fixed thermal and magnetic trip mechanism. It can be mounted by using a bolt-on mounting base. It can provide protection to three circuits at a time by using its three poles. The breaker has a non-interchangeable trip and it comes with a long time and instantaneous trip function.