摘要:
The invention relates to an overvoltage protection device for electrical terminal devices which, in addition to an at least single-phase low-voltage supply system connection, has at least one control signal connection, wherein a change in the operating state of the respective terminal device can be prespecified via the control signal connection. The overvoltage protection device comprises an arrangement of varistors which are each assigned a thermal disconnection apparatus and an optical function display, and also have at least one gas discharge tube which is connected between the supply system connection and a protective conductor. Furthermore, a first varistor is provided with a thermal disconnection apparatus between the supply system connection and a neutral conductor, and a second varistor is provided with a thermal disconnection apparatus between the control signal connection and the neutral conductor. Furthermore, the overvoltage protection device is arranged in the immediate vicinity of the electrical terminal device, in particular in a junction box.
摘要:
The invention relates to an adapter for mounting single- or multi-pin overvoltage protection devices that are designed as plug-in modules on a wiring carrier, wherein the adapter has a base and at least one chamber that is open upward and bounded by side walls, from the bottom side of which chamber a plurality of mounting protrusions extend, which each have a contour that is substantially complementary to corresponding openings in the wiring carrier. According to the invention, the mounting protrusions have a hook shape in order to engage under the wiring carrier as a result of sliding of the adapter in the plane of the wiring carrier, after the adapter has been inserted into the openings by means of the mounting protrusions, wherein through-holes are formed in the base, the dimensions of which through-holes allow plug-in connections of the plug-in modules to be fed through to the wiring carrier. Furthermore, metallized holes corresponding to the dimensions of the plug-in connections of the plug-in module are formed in the wiring carrier in such a way that the holes are located congruently with the through-holes in the base after the adapter has been inserted and slid, such that self-securing locking of the combination of the adapter, the plug-in module, and the wiring carrier is provided in addition to electrical contacting, after the plug-in module has been inserted.
摘要:
The invention relates to a compact, varistor-based overvoltage protection device which can be pre-assembled, comprising a thermal separating unit, consisting of a circuit board (1) laminated on two sides and having a through connection region (3), wherein the at least one varistor (16) or a similar protection device is connected, in particular soldered, to a first side of the laminated circuit board (1), and furthermore a separating slide (7) operatively connected to the through connection region (3) is provided on the second side of the laminated circuit board (1). According to the invention a first contact surface (4) contiguous with the through connection region (3) and a second contact surface (6) spaced therefrom by a separation distance (5) are formed on the second side of the laminated circuit board (1), the separating slide (7) bridging both contact surfaces and exposing the separation distance (5) in the event of overload. Moreover the separating slide (7) also consists of a laminated circuit board material, wherein the conductive region of the circuit board material of the separating slide (7) bridging the contact surfaces (4, 6) has a first (11) and a second (12) soldered section having a current constriction (13) located between them.