Specification for low-voltage switchgear and controlgear. Control circuit devices and switching elements. Electromechanical control circuit devices— 94 стр.
Safety of machinery - Basic concepts, general principles for design - Part 2: Technical principles and specifications; German version EN 292-2:1991 + A1:1995— 47 стр.
Safety of machinery - Safety-related parts of control systems - Part 100: Guide on the use and application of EN 954-1:1996; German version CR 954-100:1999— 6 стр.