Specification for control switches (switching devices, including contactor relays, for control and auxiliary circuits, for voltages up to and including 1000 V a.c. and 1200 V d.c.), General requirements— 28 стр.
Specification for low-voltage switchgear and controlgear. Control circuit devices and switching elements, Electromechanical control circuit devices— 74 стр.
Specification for low-voltage switchgear and controlgear. Control circuit devices and switching elements, Electromechanical control circuit devices— 74 стр.
