ВЫДВИЖНОЙ ПРИБОРНЫЙ БЛОК ДЛЯ РАСПРЕДЕЛИТЕЛЬНОГО УСТРОЙСТВА С ВСПОМОГАТЕЛЬНЫМИ РАЗЪЕМНЫМИ КОНТАКТАМИ

摘要

The invention relates to a withdrawable unit (1) for a switch device comprising an actuating device (16) for auxiliary disconnector contacts (8). A slider (15) provided with a contact unit (14) can be displaced by means of a linking arrangement (31), which comprises a linking body (32) with a spiral thread (40), wherein a control pin (36) of a shaft (34) engages. A section (40) of the spiral thread (33) is embodied with a minor pitch and enables the closure of the auxiliary disconnector contacts (8) whilst expending a minimal amount of energy when actuating the shaft (34).