Compact solution in cabinet compared to separate timersTEF4 electronic timers are front-mounted and locked on AF contactors or NF contactor relays.A mechanical indicator allows to show the state of the contactor.
Safe and cost-reduced wiringTEF4 electronic timers are supplied by a direct plug-in parallel connection to the coil terminals A1 - A2 ofthe contactor or contactor relay. A varistor is integrated on the timer to offer a built-in protection againstsurges in the contactor coil.
Available for a wide control voltage range 24...240 V AC/DCTEF4-ON or TEF4-OFF allow time-delayed functions up to 100 s in 3 distinct time ranges, independentlyof the control system. The time delay ranges are selected by a switch and the time delay can be adjustedby means of a rotary switch. The timing function is activated by closing or opening the device on which thetimer is mounted. The OFF-delay version operates without additional control supply.
Time delay range (selectable via dip switch)0.1...1 s1...10 s10...100 s
Note: Rated control circuit voltage Uc 24...240 V 50/60 Hz or DC.