Insulation grade: Class F (155℃) Temperature rise: 80℃ max for coil by the resistance method at 20℃ ambient, rated load condition Insulation resistance 500 VDC supplied, 100M ohms minimum between coil & frame. HI-pot test 2000VAC 50/60Hz for 1 second (leakage current 0.5mA) to frame Work temperature 0---55℃ Lift expectancy 10000 cycles (Duty cycle: 60S ON/60S OFF) TUVps Cert.