Patent ID: 6625280
Filing Date: 2003-09-23
Classification: H01H,H04M

Abstract:
A balanced heat coil protector for protecting telecommunications equipment from excessive sneak currents through a telecommunications circuit having a ring conductor and a tip conductor, comprising:a dielectric base; a dielectric housing adapted to be fixed to the base; an electrically conductive grounding pin supported within and extending through the base, the grounding pin providing a path to ground potential; a first electrically conductive line pin and a first electrically conductive central office pin supported in the base and extending therethrough, the first line pin and first central office pin electrically connected to each other by a first conductive wire to provide a normal circuit current path from the first line pin to the first central office pin; a second electrically conductive line pin and a second electrically conductive central office pin supported in the base and extending therethrough, the second line pin and second central office pin electrically connected to each other by a second conductive wire to provide a normal circuit current path from the second line pin to the second central office pin; and a sleeve having electrically conductive flanged end portions supported in an initial position within the housing on the grounding pin by a fusible material and disposed above at least one of the first line and central office pins and at least one of the second line and central office pins, the first and second conductive wires being wound about an outer surface of the sleeve; wherein the fusible material melts in response to an excessive sneak current in either the ring or tip conductors causing the sleeve to move from the initial position to a grounding position in contact with at least one of the first line and central office pins and at least one of the second line and central office pins to simultaneously ground the ring and tip conductors.