STAS SR EN 60947-5-1-1991 Low voltage switchgear and controlgear Part 5: Control circuit devices and switching elements. Section one: Electromechanical control circuit devices
1991STAS SR EN 60947-5-1-1991 Low voltage switchgear and controlgear Part 5: Control circuit devices and switching elements. Section one: Electromechanical control circuit devices