Starter protection device

摘要

A starter protection device which substantially operates with only a signal from a key switch, does not require wiring from an alternator or the like, and can be standardized and reduced in size can be obtained. The starter protection device for opening a starter auxiliary switch (5) under a certain condition to protect a starter (2) for starting an engine, by making the starter (2) inoperable. The starter protection device comprises a switch circuit (716) closed by turning on a key switch (6) for closing the starter auxiliary switch (5), a timer circuit (715) that starts operating at the same time the key switch (6) is turned on, and a timer circuit (710) that starts operating at the same time the key switch (6) is released, wherein the opening and closing of the switch circuit (716) is controlled based on outputs of the first and second timer circuits.