The CT-MFD.21 is a multifunction electronic time relay from the CT-D timer range. It provides 7 timing functions with 7 time ranges from 0.05 s to 100 h. This time relay operates with a rated control supply voltage of 12-240 VAC/DC and has a 2 c/o (SPDT) output with contacts rated at 250 V/5 A. A control input works with voltage-related (non-floating) triggering.