? 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. For your business to provide multi-faceted services. Intelligent integrated protection device PIR-400SII two-speed switch intelligent integrated protection device for my company's second-generation for mining two-speed magnetic starter, covering 380V, 660V, 1140V voltage level, 10 ~ 500A rated current, all-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 parameters 1, Rated current: 10 ~ 500A 2, Rated voltage: 4VAC or 10VAC 3, Rated frequency: 50Hz 4, measuring content: U, I, R, temperature 5, measurement accuracy: ± 3% 6, switch input way: 1 optically 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 to the insulation of 5 atmospheres, to prevent dripping place standard Host a current transformer 3 power a set of connectors