Electromechanical all-or-nothing relays - Part 54: Blank detail specification; Electromechanical all-or-nothing telecom relays of assessed quality; Two change-over contacts, 15 mm x 7,5 mm base (IEC 61811-54:2002); German version EN 61811-54:2002— 31 стр.
Electromechanical all-or-nothing relays - Part 51: Blank detail specification; Electromechanical all-or-nothing telecom relays of assessed quality; Non-standardized types and construction (IEC 61811-51:2002); German version EN 61811-51:2002— 27 стр.
Electromechanical all-or-nothing relays - Part 53: Blank detail specification; Electromechanical all-or-nothing telecom relays of assessed quality; Two change-over contacts, 14 mm x 9 mm base (IEC 61811-53:2002); German version EN 61811-53:2002— 31 стр.
Electromechanical all-or-nothing relays - Part 52: Blank detail specification; Electromechanical all-or-nothing telecom relays of assessed quality; Two change-over contacts, 20 mm x 10 mm base (IEC 61811-52:2002); German version EN 61811-52:2002— 27 стр.
Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices (IEC 60947-5-1:2003 + A1:2009) (english version)
