WAGO Corporation (Germantown, WI) offers the 859 Series DIN-rail timer relay module. According to the company, the product features n-/Off-Delay timer modes and multiple time ranges for diverse applications such as switch and package “de-bounce” sensors. Unlike traditional designs, the 6mm 859 Series carries a top-mounted potentiometer for fine-tuning delay time without removing unit from DIN-rail. On-Delay mode can prevent simultaneous excess inrush currents by delaying machine startup. Off-Delay mode can enable auxiliary components, e.g., fans, to continue operation after machine shutdown.
Visit http://www.wago.us/timerrelay.htm to learn more.