The Uni-Com Circuit Breakerwill instantly cut power to prevent electric shocks. It monitors the flow of electricity and will cut the power when electricity 'leaking' to earth is detected at a harmful level. Recommended for use with power tools, electric lawnmowers, hedge trimmers etc. Helping to provide electrical safety at work, the home and in the garden.Specifications:Trip Current: 15-30mA.Cut Off/Trip Time: 30ms.Max. Load: 13A.