[Zhejiang Koretoyo Explosion-proof Electric Co., Ltd. Tianjin Office] switch acceptance requirements: 1, shell no distortion, no open welding, no rust, no serious deformation of the bracket 2, the operating handle in the correct position, pulling the flexible, connected with the operating shaft solid, no imaginary Action 3 explosion-proof switch, vacuum contactor contact good contact, no oxidation discoloration interrupter interior parts, the vacuum compliance, no serious signs of discharge 4, good contact, the insertion depth of not less than 2/3 of the width of the knife the contact area of ??not less than 75 [%] 5 toolholder, moving knife opening and closing position, direction and handle strictly coordinated action. explosion-proof switch switch model, by definition, can be used in harsh environments more dangerous explosion . For example: the coal industry, paint or ink manufacturers, timber processing plants, cement proof switch cheap manufacturers, shipping and sewage treatment. Need to use explosion-proof switch. Currently, the market-proof switch brands and many different types, but in the true sense, with excellent explosion-proof performance, safety and reliability of the quality of proof switch, the market is still relatively small. Among them, the British brand Bulgin better. Bulgin's proof switch, hazardous professional proof switch-based design, comply with ROHS certification by the special test, for a variety of harsh environments. A, good contact, the insertion depth of not less than 2/3 of the width of the knife-proof switch price, the contact area of ??not less than 75 [%] of the holder of the B, moving knife opening and closing position, direction of motion of the handle in strict coherence .C shell no distortion, no open welding, no rust, no serious distortion bracket D, operating handle in the correct position, pulling the flexible shaft is firmly connected with the operation, no virtual action E, vacuum contactor contact good contact interrupter Part no oxidation discoloration, the vacuum compliance, no serious proof switch cheap traces of discharge of professional manufacturers _ _ known manufacturers Koretoyo explosion proof switch from east Zhejiang Koretoyo explosion-proof electrical Co., Ltd. Tianjin offices. Zhejiang Koretoyo explosion-proof electrical Ltd. Tianjin Office (www.tjfangbao.com) is Tianjin, explosion-proof lighting leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Koretoyo explosion in leadership with the staff warmly welcome all inquiries to discuss, but to create a better future abundance of proof.