Ziehl MSF220VU PTC-Resistor Relay T221737

The MSF 220 V is particularly suitable for the temperature monitoring at dry transformers. 3 PTC-circuits with different nominal response temperatures (NRT) can be connected to this unit, one for controlling a fan (forced cooling) and two for alarms. Each PTC-circuit is monitored for break and short circuit. This reduces the probability of false alarms. Technical data Rated supply voltage Us.......AC 220 - 240 V ± 10 %, 50/60 Hz ≤ 3 VA AC/DC 24 V, ± 15 %, lt; 3 VA Connectable PTC resistors.......3 x 1...6 PTC according to DIN VDE V 0898-1-401 (formerly DIN 44081/82) Switching point....... lt; 4000 Ω Output relay.......2 x 1 change-over-contact (co), 1 normally-open contact (no) Test conditions.......see general technical information Rated ambient temperature.......-20...+55 °C Dimensions h x w x d.......Design V4: 90 x 70 x 58 [mm] Protection Housing/Terminals.......IP30/IP20 Weight.......approx. 320 g READY STOCK 4PCS