J402-610美国UE高压压力开关液压油压力控制器西安秦控UE***代理成工电话/微信15388626179029-89390083***：1826994033UE***：http://402-610J402-612J402-16014J402-616美国UE压力开关303不锈钢活塞，带有丁晴橡胶O型圈，303不锈钢压力接口1/4NPT不适用于气体介质。美国UE开关的防护标准NEMA防护等级是美国电气制造商协会工业控制装置和系统中的外壳防护标准。NEMA的防护标准除了防尘、防水之外，还包括防爆(IP代码只包括防尘和防水)。NEMA4X：（水封、尘封、防腐蚀、室内或室外用外壳）：计划用于室内或室外，主要为了提供一定程度的保护，以防止腐蚀、飞扬粉尘和雨水、溅水、软管引出水、以及由于外部结冰引起的***。NEMA4X相当于IP66二者有什么区别？NEMA7X、NENA9X（J120系列，针对于防爆开关）J400系列压力，差压开关J400-164J400-270J400-274J400-16014J403-144J403-146J403-156J403-164J400-440J400-441J400-442J400-443J403-126J403-134J403-137J400-S144BJ400-448J400-449J400-450J400-S126BJ403-358J403-376J403-610J403-614J400-451J400-452J400-453J400-454J403-571J403-572J403-361J400-S137BJ400-550J400-551J400-552J400-S134BJ400-553J400-554J400-555J403-570J400K-457J400K-599J402K-127J400K-127J400K-544J402K-S146BJ402K-S144BJ402K-137J400K-S146BJ400K-S156BJ402K-545J402K-546J402K-547J402K-548J402K-134J402K-144J400K-456J402K-543J402K-544J402K-S157BJ402K-S156BJ402K-146J402K-156J400K-S157BJ402K-S127BJ402K-540J402K-541J402K-542J402K-157J402K-455J402K-456J402K-457J402K-599J402K-S134BJ402K-S137BJ402-572J402-358J402-361J402-376J403-551J403-552J403-553J400-S164BJ402-610J402-614J402-126J402-S126BJ403-452J403-453J403-454J403-550J402-134J402-137J402-144J402-146J403-449J403-450J403-451J400-S156BJ402-156J402-164J402-270J402-S137BJ403-441J403-442J403-443J403-448J402-574J402-440J402-441J402-442J402-454J402-550J402-551J402-S146BJ402-443J402-448J402-449J402-S144BJ402-450J402-451J402-452J402-453J403-S164BJ400K-S127BJ400K-S134BJ403-554J402-554J400K-134J400K-157J403-555J403-S126BJ403-S134BJ403-S137BJ400K-137J400K-144J400K-146J400K-156J400K-455J400K-S137BJ400K-S144BJ403-S144BJ403-S146BJ403-S156BJ402-552J402-553J402-612J402-555J402-535J402-570J402-571J402-16014)