| 摘要 |
1. A multipolar overvoltage protection device comprising a plurality of first external contacts (11) for the circuits to be protected and allowing the set of the said external contacts (11) to be subjected to the same voltage when an overvoltage occurs on one of them, each first external contact (11) being connected to two connectors (9, 14) each connected to one terminal of a voltage limiter element with two terminals (1, 5), one of the connectors (9, 14) connected to each first external contact (11) carrying at least one diode (10, 15) and allowing the current to pass in the terminal-contact direction, whilst the other connector carries at least one diode (10, 15) and allows the current to pass in the contact-terminal direction, characterised in that the set of external contacts (2) is connected to a reference potential, which set is connected to a single overvoltage limiter element (1a) with two terminals (1, 5), one (1) of these two terminals being connected to each external contact (2, 11) via a connector (13, 14) comprising at least one diode (15, 16) passing in the contact-terminal direction, whilst the other (5) of these two terminals is connected to each external contact (2, 11) via a connector (8, 9) comprising at least one diode (10, 12) passing in the terminal-contact direction. |
