... Customize YCF1-12/Z Vacuum Auxiliary Switch1.Rated Current: 5A2.Rated Voltage:DC 48V 110V 220V AC 110V 220V3.Mechanical lifetime: ... 20,000 time Nowadays, F series auxiliary switch often adopts mechanical friction contacting mode, with universal disadvantages of stiff work, poor ... problem, we choose vacuum reed switch to instead of mechanical contact, which are adopted in series ZKF vacuum auxiliary ...