7TU9915-4EA1/BB

C OVER/UNDERVOLTAGE RELAY OVER/UNDERVOLTAGE FUNCTION + TIMER 7TT9901 3 ELEMENT WITH 3V HYSTERESIS AUXILLARY SUPPLY VOLTAGE 220V- 2 PLUG-IN MODULES IN AN EXT. 7XP20 CASE AC VOLTAGE SETTING RANGE 5 TO 133V