1SVR550207R4100 The CT-YDE is a single-function electronic time relay from the CT-E timer range. It provides a star-delta function with a time range from 0.3 s to 30 s. This time relay operates with a rated control supply voltage of 24 V AC / DC / 220 - 240 V AC and has a 1 c/o (SPDT) output rated at 250 V / 4 A.