Patent ID: 6831546
Filing Date: 2004-12-14
Classification: H01H

Abstract:
An impact signaling system (9) for a high-voltage protective device (1) having a housing (13),having a spring (16) which is arranged in the housing (13) and has a moveable end, having an actuator (17) which can be passed out of the housing (13) and interacts with the moveable end, having a high-resistance resistor wire (12) which is connected in parallel with a fusion wire (4) of the protective device (1), and having a holder which absorbs the prestress of the spring (16) and can be raised with the aid of an activator (20) above a limit temperature with the load on the spring (16) at the same time being relieved, characterized in that the holder contains a section of the high-resistance resistor wire (12) which is in the form of a winding (18) and is passed at least once around the moveable end of the spring (16) in order to form the prestress, and which is at least partially in thermally conductive contact with the material of the activator (20).