Product Description Features: 1) Made up of mechanism and automatic controller 2) Mainly matches electromagnetic winding 3) Suitable for AC 50Hz, 400V rated working voltage and under dual power supply system 4) Conforms to IEC947-6(1998) 5) Auto connect switch over devise standard 6) With electric interlocking and mechanical interlocking double protections, it has over voltage, under voltage, lost phase protection function 7) Mainly used for hospitals, shopping centers, banks, and chemical industry, metallurgy, high buildings, military facilities
