The 140G-G2C3-D11 circuit breaker is a circuit breaker that is used as a feeder breaker or as a branch protective device in a control application. This unit has been developed by Allen-Bradley/Rockwell Automation and it has been included in one of its standard series of circuit breakers that is known as the 140G series. Different volumes of electric current can cause appliance damage, electrical shock, or even a fire and preventing these problems is the main reason why circuit breakers are used.  This breaker detects short-circuit currents and it immediately performs a tripping action that stops this current flow. The difference between the Allen-Bradley 140G-G2C3-D11 circuit breaker and fuses are their lifespan. Fuses can only be used once and circuit breakers provide ongoing operations. Once the fault has been cleared, the breaker can be re-started. The breaker is also more sensitive than a fuse and it has lower replacement costs.

The Allen-Bradley 140G-G2C3-D11 protective circuit breaker comes made of materials that can resist humid environments. All its parts are manufactured in anti-corrosive and anti-condensation materials, although its performance might be affected by extreme temperatures. Altitudes above 2000 meters cause difficulties in performing detections. It is recommended to analyze the environment and the type of application that the breaker is going to be used in to choose the best breaker. Specifications such as the short-current, current rating, and voltage ratings of the breaker and application must be studied and compared. The Allen-Bradley 140G-G2C3-D11 protective circuit breaker can be mounted in any position. The position will not affect the interrupting mechanism. This breaker comes with 3 poles.