Industrial Automation Co. is NOT an Authorized Rockwell Distributor - we have our own unique inventory and sourcing relationships. Review our Reseller notice, here.

The Allen-Bradley/Rockwell Automation 140G-J3F3-D15 is a robust 3-phase circuit breaker designed to handle 150 Amps with a maximum voltage capacity of 600 Volts AC. It features a breaking capacity of 35 kiloAmps at 480 Volts AC, employing an adjustable thermal/magnetic trip unit that ensures protection during short circuits and extended overloads. Its performance remains effective in systems operating at 50 or 60 Hertz frequencies, although higher frequencies may require derating for recalibration. The circuit breaker, encased in a durable molded housing, operates optimally in ambient temperatures up to 40 degrees Celsius, with adjustments necessary in higher temperatures to prevent nuisance tripping.