SIS SS EN 50 047-1989 工业用低压成套开关设备和控制设备．控制开关．座席开关30x55 —尺寸和特点

标准号：SIS SS EN 50 047-1989
中文标准名称：工业用低压成套开关设备和控制设备．控制开关．座席开关30x55 —尺寸和特点
英文标准名称：Low-voltage switchgear and controlgear for industrial use —Control switches —Position switches 30x55 —Dimensions and characteristics
发布日期：1989/9/13 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This standard applies to certain position switches with automatic return actuator for industrial use, the standardized dimensions of which and the charac-teristics necessary for their application are given below.A larger size (42,5 x 80) is standardized in EN 50 041.Electrical characteristics shall conform to those of IEC Publication 337 - Control switches.This standard includes the four following types:roller lever (form A), rounded plunger (form B), plunger with roller (form C), roller lever arm (form E).The devices are fitted with either snap action designated(1) in clause 3, or slow make and break, designated (2) in clause 3, mechanisms.