T221737 Ziehl MSF220VU, PTC-relay for dry transformers, AC/DC24-230V

PTC-Resistor-Relay (Thermistor Relay) for the protection of transformers for PTC-thermistors  60…180 °C, acc. to DIN 44081/44082 3 PTC-circuits (operation fan, alarm and trip) intelligent control of fan Test-button Relays 2 change-over contacts, 1 normally open contact Relay for trip in operating current mode, no tripping signal when switching on supply display of operating status with LEDs housing width 70 mm, mounting height 55 mm snap-on mounting on DIN-rail or with screws (option) Supply voltage AC/DC 24-240 V