Franciscan Ninghao Bo quality is the eternal theme. Market is the sea, the quality of the ship, the brand is a fan. The quality of today's and tomorrow's market. Build quality of the Great Wall, China Xing economy. You PIR-400S dual-speed switch intelligent integrated protection device for the first generation of our company for mine two-speed magnetic starter intelligent integrated protection device, covering 380V, 660V, 1140V voltage rating, 5 ~ 500A rated current, full Digital tuning and calibration. With undervoltage | overvoltage | overload | short circuit | Equilibrium | leakage lockout protection; with four remote RS485 communication function; with calendar clock; with fault memory and inquiries; with test functions via the menu. Allow a single two-speed or two-speed dual speed up the double-speed dual-loop. Functional, well-targeted, long-term stable and reliable operation. By EMC testing and proof testing center. ? Measurement of technical parameters 1, Rated current: 5 ~ 500A 2, Rated voltage: 4VAC 3, Rated frequency: 50Hz 4, measuring content: U, I, R 5, Accuracy: ± 3% 6, the switch input methods: optical an isolated environment, altitude not exceeding 2000m, pressure is 80kPa ~ 110kPa 2, the ambient temperature is -5 ℃ ~ + 55 ℃ 3, ambient air relative humidity less than 95% (+ 25 ℃ when) 4, no significant damage 5 gas insulated environment, local standards to prevent dripping configure host a current transformer 3 power companies to provide a multi-faceted services.