The 140G-K6F4-D40 circuit breaker is a molded case circuit breaker in the 140G family of Eaton Cutler-Hammer circuit breakers. It operates on a voltage rating of 600 Volts AC, with a K-frame molded case and a current rating of 400 Amps. This unit features the bolt-on connection type and thermal-magnetic trip protection. It also comes with 3 phases, 4 poles, and an AIC rating of 65 kA at 480 Volts AC. The 140G molded case circuit breaker series offers a variety of features, including but not limited to magnetic, thermal, and electronic protection capabilities, higher interruption and breaking abilities and a variety of field and factory-installed fixtures. The 140G-K6F4-D40 circuit breaker and the whole 140G series circuit breakers are perfect for line protection on control panels.

Also, the 140G-K6F4-D40 molded case circuit breaker comes with unique operating temperature specifications, including a current rating of 10 to 3000 Amps, space-saving dimensions, and standard end-cap and bolt-on terminals. This circuit breaker is approved for worldwide use by the CSA, UL, CCC, and IEC standards. It has a variety of mounting options for both field and factory-installed components. The 140G Circuit Breakers come with different operating temperature ranges. Generally, all the standard circuit breakers like the 140G-K6F4-D40 circuit breaker are rated for up to 40 degrees Celsius of ambient temperature. However, for applications at ambient temperatures above or significantly below 40 degrees Celsius, rerating a specific circuit breaker might be necessary and the manufacturer of the circuit breaker contacted may be contacted for more information about any possible re-rating.