Surge protection device for single or multi-core signal circuit, has base part fastened to mounting rail, and two plugging parts, each comprising two connecting terminals for respective electrical conductors

摘要

The device (1) has a base part (3) fastened to a mounting rail (2), and a plugging part (4) inserted into the base part. A protection circuit has a conductor, and the plugging part has two connecting terminals (6, 7) for an electrical conductor. Another plugging part is inserted into the former plugging part and has two connecting terminals for another electrical conductor. A switching unit is provided for electrically connecting a connecting terminal (5) for a ground potential conductor with the rail, and a status module (16) has an optical condition display (18) that is formed by two LEDs.