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 . ? PIR400J magnetic starter intelligent integrated protection device for mine intelligent magnetic switch covers 380V, 660V, 1140V, 3300V (no) voltage levels, 5 ~ 400A rated current, all-digital tuning. With undervoltage | overvoltage | overload | short circuit | Unbalanced | break with | Wind | Gas and other protection; with fault memory and inquiries; with test functions via the menu. Can replace JDB, ABD8 and other analog protection, an economic-type products. Note: For side shell or shell of mine measurement technology park with a magnetic switch 1 ,? parameters Rated current: 5 ~ 400A 2 ,? Rated voltage: 10VAC 3 ,? Rated frequency: 50Hz 4 ,? content measurement: U, I, R 5 ,? Accuracy: ± 5% 6 ,? switch input methods: optical isolation ,? power level measurement 7: 6 ‰ precision environment an altitude of no more than 2000m, the air pressure is 80kPa ~ 110kPa 2, ambient temperature of - 5 ℃ ~ + 55 ℃ 3, ambient air relative humidity less than 95% (+ 25 ℃ when) 4, no obvious damage to the insulation of 5 atmospheres, to prevent dripping local standard Host a power supply a current transformer is a set of three connectors on the introduction of this product here, if you have any questions or want to purchase our 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.