Siemens 7PU6020-7NJ20 Time Relay

Siemens 7PU6020-7NJ20 is a star-delta time relay used to sequence motor starting by delaying the transition from star to delta. It provides a 2 to 20 second adjustable delay, enabling controlled inrush reduction in small to medium motors. Operates on 100–127 V AC supply with 50/60 Hz compatibility, making it suitable for mixed-voltage control panels. The 7PU6020-7NJ20 is a member of Siemens’ 7PU60 family of timing relays, with the 7NJ20 variant denoting this exact timing range and voltage configuration. Common applications include star-delta motor starting in conveyors, pumps, and fans, as well as general timing functions within control circuits where a precise, repeatable delay is required.