... children were filling products, and type two kinds, composite switch used for cutting threephase electricity containers, have the train. ... low malfunction, service, etc. In stead of touch, thyristor switch, common compound switch, widely used in low voltage reactive power claims. ... use life 100,000 times.2. Switch 2000V switch power voltage: acuities than 2W3. Switch pressure resistance than 0.1V: 20S, ...