Relay timer 0,05... 600 s off delay siemens sirius 3rp1540-2ab31 | eBay
Amazon.com: Siemens 7PV1518-1AW30 Timing Relay, On Delay Function, 0.05s-100h Time Setting Range, 12-240VAC/DC Control Voltage : Industrial & Scientific
On Delay Timer and Off Delay Timer | Timer, Ladder logic, Plc programming
32.7.1.1 Explanation of the ON Delay Timer (TON) and OFF Delay Timer (TOF) Instructions