The 140G-H2C3-C50 circuit breaker is a series 140G, 3-pole molded case circuit breaker manufactured by Allen-Bradley. Its ratings are 690 Volts AC nominal operational voltage, 50 Amps of current at 40 degrees Celsius, 25 kA of interrupting/breaking capacity, 800 Volts (rms) insulation voltage, 8000 cycles electrical service life, and 25,000 cycles of mechanical service life. It has an H size frame, and its width, height, and depth measure 90 millimeters, 130 millimeters, and 82.5 millimeters, respectively. Arc-extinguishing technology is built into the 140G-H2C3-C50 molded case circuit breaker to reduce the effect of arcing when its contacts are opened. Its electronic circuits are protected from condensation and its metal components such as the terminals are treated for anti-corrosion protection. This circuit breaker can be mounted horizontally or vertically without reducing its performance.

The trip unit of the Allen-Bradley 140G-H2C3-C50 molded case circuit breaker is a fixed thermal and fixed magnetic trip unit. The thermal trip is rated at 50 Amps and the magnetic trip is rated at 500 Amps. This unit offers short circuit, overcurrent, and conductor protection. It is suitable for reverse feed use and it has electromagnetic compatibility for global standards. A wide array of operating mechanisms are compatible with the 140G-H2C3-C50 molded case circuit breaker to match different panel configurations. Its built-in operating device is a toggle type switch that also indicates whether it is ON, OFF, or TRIPPED. This unit supports remote operation via an Allen-Bradley motor operator device and it can also be used in combination with contactors, motor starters, and overload relays.