Timing Relay with OFF-Delay — SIRIUS 3RT1926-2DH21
The Siemens SIRIUS 3RT1926-2DH21 is a timing relay designed with OFF-delay, meaning the output remains energized for a set period after the control signal is removed — useful for sequenced shutdowns, post-lubrication runs, or delayed vent cycles. The adjustable time range spans 0.5 to 10 seconds, and the recovery time between cycles is 150 ms, so it can re-trigger quickly in a repeating sequence. Control supply accepts 90...240 V AC at 50/60 Hz or DC, covering common industrial control voltages without needing a separate transformer.
Mounting and Integration
Clip-on fastening to standard DIN rail — snaps onto the rail without tools, and the 45 mm width occupies one standard modular device space. Mounting position is any, so it fits in tight enclosures or horizontal rail runs without derating. Operating temperature range -25 to +60 °C suits most indoor panel environments; storage range -40 to +85 °C covers transport and warehouse conditions.