Quality first, customers first. Ji 宁浩博 mining equipment specializing in the production and sales of mining equipment protection switching products, adequate supply, complete model, low price, timely delivery, quality Three Guarantees, welcome to contact to discuss the industry, integrity is priceless, win-win cooperation . 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 on the introduction of this product here, if you have any questions or want to buy the company products, please contact me Tel: 15589715136 Tel: 0537-2782188 QQ: 877995102 Company Website: http: //www.wgangdai.com welcome you to inquire, we look forward to business cooperation with you to create a more beautiful tomorrow.