The contact box is formed by epoxy resin with APG technology, it is used for insulation, isolation & connection transition in various kinds of handcart switchgear.
2.Ambient temperature at -30℃ to +40℃, the daily average temperature should not more than 30℃
3.The daily average of relative humidity is less than 95%, the average monthly is less than 90%.
4.Working environment should be without steam, gas, chemical corrosive deposition, salt fog, dust, dirt and other dangerous explosive media, which will severely impact on insulation and conductivity of products.
5.Working environment should not be regular vibration or serious bumps