The 140U-H2C3-C60 Circuit Breaker from Allen-Bradley/Rockwell Automation is a Frame H unit with an operating current rating of 125 Amps. It is a three-pole thermal-magnetic tripping circuit breaker with a breaking capacity or interrupting rating of 20 to 29 kiloamps at 480 Volts AC. The 140U MCB series circuit breakers are compatible with both electronic trip modules as well as thermal-magnetic trip modules. The current rating of the electronic trip breakers ranges between 70 and 1200 Amps, while the current rating of the thermal-magnetic trip breakers ranging between 15 and 800 Amps. Some notable features of the circuit breakers in the 140U MCB series, including the 140U-H2C3-C60 Circuit Breaker, are rotary variable-depth operating mechanisms, high interrupt ratings in the compact dimensions field, factory installable accessories, and flexible cable operating mechanisms. The 140U-H2C3-C60 Circuit Breaker has a current range of 600 Amps with an approximate weight of 3 pounds as well as enclosure dimensions of 5.5 x 3 x 3 inches.

The Allen-Bradley 140U-H2C3-C60 Circuit Breaker comes with various interrupting ratings at 60 Hertz which include 18, 25, and 25 kiloamps ratings at 600, 480, and 240 Volts AC, respectively. It also features 35, 25, 17, and 3 kiloamps of service short-circuit breaking ratings at 220, 380, 525, and 690 Volts AC respectively. This circuit breaker dissipates 25 Watts of heat while operating in normal load conditions. Additionally, it has a main circuit breaker pole voltage rating of 750 Volts AC insulation voltage. The 140U-H2C3-C60 Circuit Breaker works best in environments with a temperature range of 16 to 140 degrees Fahrenheit. This three-pole fixed thermal circuit breaker and fixed magnetic circuit breaker is globally accepted, rated, and approved for applications worldwide.