Thermistor Motor Protection Relay Dimensions W x H x D: 22.5 x 92 x 91 mm Operating temperature: -25...+60 °C Operating value of PTC thermistor: 3.4...3.8 kOhm Rated output: AC-15: 3 A @ 240 VAC, DC-13: 2 A @ 24 VDC Reset value of PTC thermistor: 1.5...1.65 kOhm Assembly type: DIN-Rail Output contact: 1 Break Contact (NC) Protection rating: IP20 Cold resistance max.: 1.5 kOhm Operating voltage: 24 VAC/DC