The Siemens 3RP1540-2BN31 is a SIRIUS time-delay relay with a 200-240 VAC/DC supply and an adjustable delay range of 0.05 to 600 seconds. It provides a relay output rated 1 A at 24 V, 0.2 A at 125 V, and 0.1 A at 250 V, with a thermal current rating of 5 A.
The adjustable delay from 0.05 to 600 seconds handles timing needs from short pulse delays to extended off-delays for pump sequencing or conveyor staging. The relay output switches 1 A at 24 VDC — enough for a small contactor coil or PLC input — but the 0.1 A at 250 VAC limit means it's not for direct motor loads; use it to pilot a contactor or signal a controller.
Width is 22.5 mm, so it occupies one slot in a typical terminal-block row. Clearance around the relay: 0 mm upwards, forwards, backwards, downwards, and at the side, meaning it can be packed tight against adjacent components without derating spacing.