The HPM Electresafe Power Centre features a built-in RCD safety switch to help protect against electrocution, cutting power in 30 milliseconds, and a built-in MCB for localised overload protection. Built-in RCD safety switch - electromechanical RCD will trip within 30 thousandths of a second if the supply neutral is lost Type A RCD protects the supply against AC earth fault currents and pulsating DC fault currents Built-in MCB (Minature Circuit Breaker) to provide localised protection 2x HPM Excel double pole power points with safety shutters for extra protection Lead can be wound onto the unit for easy transportation and storage when not in use *Accessories shown in the picture are not included.