National New Year folks Hello everyone, I 宁浩博 mining company Ji Machinery Co., Ltd. with its strong technology, excellent product quality, satisfactory service, in the market enjoy a high reputation. Intelligent integrated protection with excellent quality, trusted by the user. First-class products, good service is our consistent aim! The company is willing to friends and the community work together for common development! The staff warmly welcome the global community of companies and individuals to negotiate business for a better future! You have any questions about the company and products need advice, you can call the telephone company and we look forward to your sincere cooperation. Let me take you to understand this product: PIR-4008Z combination switch intelligent integrated protection device can be used to mine 2-8 loop combination magnetic starter switch covers 3.3kV, 1140V, 660V, 380V voltage rating, 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. Have joint control | control methods such as single | sequencer | Two-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: 127VAC 3, Rated frequency: 50Hz ?? 4, measuring content: U, I, R 5, Accuracy: ± 3% 6, switch input : optical isolation environment requires an altitude of no more than 2000m, the air pressure is 80kPa ~ 110kPa 2, the ambient temperature is -5 ℃ ~ + 55 ℃ 3, ambient air relative humidity less than 95% (+ 25 ℃ when) 4, in the absence of significant damage to the insulation of 5 atmospheres, to prevent dripping local standard configuration host a display a current transformer 3 / per one data line drive circuit board 1/2 loop power per set of more than one connector is the introduction of this product, if you have any questions please contact us, you can also visit to the company site.