product name AC filament conversion relay: JZSJC2 product usage JZSJC2 AC Filament Conversion Relay is suitable for railway signal lighting circuit. When the main filament of the 12V, 25w dual-filament signal bulb is broken, the auxiliary filament will be lit through a set of movable break contacts to realize the conversion of the main and auxiliary filaments. , And alarm through another set of contacts. Applicable environment a) Temperature: -40~+60; b) Air pressure: not less than 70kPa (equivalent to 3000m above sea level); c) Relative humidity: not more than 90% (temperature -25C); d) Vibration: frequency 5H2~2H2, displacement amplitude not greater than 1mm, frequency 22H2-50H2, acceleration amplitude not greater than 20m/s2; e) There should be no harmful gas causing explosion hazard around, and dust-proof measures should be taken. Mechanical properties Contact gap: not less than 0.8mm; Dynamic contact pressure: not less than 150mN; Dynamic breaking contact pressure: not less than 150mN; Contact uniformity error: not more than 0.1mm; The joints are formed together: not less than 0.1mm. Electrical characteristics Rated current: 2.1AAC; Working value: not more than 1.5AAC; Release value: not less than 0.5AAC; Contact resistance: no more than 0.052 Insulation resistance The temperature of the relay and socket is 15C~35, the relative humidity is 45%~80%, and the insulation resistance should not be less than 100M.