Thermistor Monitoring Relay Dimensions W x H x D: 35 x 85 x 58 mm Operating temperature: -20...+55 °C Monitoring: Motor temperature with PTC (&gt, 20 Ohm -3 kOhm), PTC short-circuit (20 Ohm), PTC wire break (&gt, 3 kOhm) Rated output: 250 VAC / 10 A Assembly type: DIN-Rail Output contact: 1 Make Contact (NO) Series: 71 Series Operating voltage: 230 VAC