Supco TD-69 On Delay Timer

Supco TD69 is a compact delay‑on‑make timer (single‑function encapsulated timing relay) used to delay power to HVAC and refrigeration loads after a control signal is applied, helping prevent compressor short‑cycling. It provides an on‑delay timing range of 6 seconds to 8 minutes (0.1–8 minutes) and accepts a pilot voltage of 19 to 250 VAC or DC at 50/60 Hz, making it compatible with common control circuits. The unit is designed for surface‑mount installations and uses two 1/4‑inch male terminals for wiring. On power restoration, the timer initiates again and resets if power is interrupted, ensuring a controlled restart sequence. The TD69 model is part of Supco’s TD series of time‑delay relays and is commonly employed in anti‑short‑cycle applications in compressors and related HVAC equipment.