The Siemens SIRIUS 3RT2916-2BL01 is an OFF-delay device — a timing relay that keeps the contactor coil energized for a set period after the control signal drops, then releases it. It's designed specifically for the 3RT2 contactor and 3RH2 auxiliary contactor range, in sizes S00 and S0, with AC/DC control voltage across 200-240 V at 50/60 Hz.
What the ratings mean for fit
The 200-240 V AC/DC control voltage covers both 208 V and 240 V control circuits common in North American and European panels — no separate AC and DC variants needed. The 50/60 Hz rating means it works on either line frequency without derating, so it's a single SKU for global machine builds. It mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 50022, and the mounting position is any orientation — no derating for horizontal or vertical panel placement. The finger-safe touch protection (IP20 on the front) means it meets standard panel safety requirements without needing additional shrouds. Screw-type terminals on the control circuit accept field wiring directly — no special crimp tools needed. The operating temperature range of -20 to +60 °C covers most indoor industrial environments, including unventilated enclosures near process equipment.