The Siemens 3RT1926-2DH31 is a SIRIUS timing relay designed specifically for OFF-delay applications — meaning the output stays energized for a set period after the control signal drops. Adjustable from 5 to 100 seconds, it accepts control supply voltages of 90...240 V AC (50/60 Hz) or DC, so it works across common global line voltages without needing a separate power supply module.
Panel Integration
Dimensions are 45 mm wide, 26 mm tall, 50 mm deep, so it occupies a single 45 mm module width on the rail. The any-position mounting means it can be installed horizontally, vertically, or flat without derating the timing accuracy.