{"id":46623,"date":"2025-03-17T07:11:47","date_gmt":"2025-03-17T07:11:47","guid":{"rendered":"https:\/\/www.kdmsteel.com\/?p=46623"},"modified":"2025-03-17T12:53:38","modified_gmt":"2025-03-17T12:53:38","slug":"nema-3-vs-3r-enclosure","status":"publish","type":"post","link":"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/","title":{"rendered":"NEMA 3 \u4e0e 3R \u5916\u58f3 \u2013 \u60a8\u5e94\u8be5\u77e5\u9053\u7684\u5173\u952e\u533a\u522b"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">\u5728\u9009\u62e9\u7535\u6c14\u8bbe\u5907\u5916\u58f3\u65f6\uff0cNEMA 3 \u548c NEMA 3R \u5916\u58f3\u8bbe\u8ba1\u90fd\u5f88\u53d7\u6b22\u8fce\u3002\u7136\u800c\uff0c\u4e86\u89e3 NEMA \u5916\u58f3\u4e4b\u95f4\u7684\u533a\u522b\u81f3\u5173\u91cd\u8981\u3002\u672c\u6307\u5357\u5c06\u5e2e\u52a9\u60a8\u4e86\u89e3\u6bcf\u79cd NEMA \u5916\u58f3\u7684\u529f\u80fd\u3001\u7279\u6027\u3001\u9632\u62a4\u7b49\u7ea7\u4ee5\u53ca\u4f55\u65f6\u4f7f\u7528\u54ea\u79cd\u7c7b\u578b\u3002\u6700\u7ec8\uff0c\u60a8\u5c06\u4e86\u89e3\u54ea\u79cd\u5916\u58f3\u6700\u9002\u5408\u60a8\u7684\u9700\u6c42\u3002<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u5207\u6362\u76ee\u5f55\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u5207\u6362<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Understanding_NEMA_3_Enclosures_and_NEMA_3R_Enclosures\" >\u4e86\u89e3 NEMA 3 \u5916\u58f3\u548c NEMA 3R \u5916\u58f3<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#NEMA_3_Enclosures\" >NEMA 3 \u5916\u58f3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#NEMA_3R_Enclosures\" >NEMA 3R \u5916\u58f3<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Key_Differences_Between_NEMA_3_And_NEMA_3R\" >NEMA 3 \u548c NEMA 3R \u4e4b\u95f4\u7684\u4e3b\u8981\u533a\u522b<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Protection_Level\" >\u4fdd\u62a4\u7ea7\u522b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Construction_and_Durability\" >\u7ed3\u6784\u548c\u8010\u7528\u6027<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Cost_and_Maintenance\" >\u6210\u672c\u548c\u7ef4\u62a4<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Compliance_and_Standards\" >\u5408\u89c4\u6027\u548c\u6807\u51c6<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Applications_and_Use_Cases\" >\u5e94\u7528\u7a0b\u5e8f\u548c\u7528\u4f8b<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#NEMA_3_Enclosures-2\" >NEMA 3 \u5916\u58f3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#NEMA_3R_Enclosures-2\" >NEMA 3R \u5916\u58f3<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Environmental_Considerations\" >\u73af\u5883\u8003\u8651<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Weather_Conditions\" >\u5929\u6c14\u72b6\u51b5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Dust_and_Debris\" >\u7070\u5c18\u548c\u788e\u7247<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Temperature_and_Humidity\" >\u6e29\u5ea6\u548c\u6e7f\u5ea6<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Conclusion\" >\u7ed3\u8bba<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#FAQs\" >\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/#Are_NEMA_3R_enclosures_suitable_for_use_under_severe_weather_conditions\" >NEMA 3R \u5916\u58f3\u9002\u5408\u5728\u6076\u52a3\u5929\u6c14\u6761\u4ef6\u4e0b\u4f7f\u7528\u5417\uff1f<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Understanding_NEMA_3_Enclosures_and_NEMA_3R_Enclosures\"><\/span><b>\u4e86\u89e3 NEMA 3 \u5916\u58f3\u548c NEMA 3R \u5916\u58f3<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-46628\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Understanding-NEMA-3-Enclosures-and-NEMA-3R-Enclosures.jpg\" alt=\"\u4e86\u89e3 NEMA 3 \u5916\u58f3\u548c NEMA 3R \u5916\u58f3\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Understanding-NEMA-3-Enclosures-and-NEMA-3R-Enclosures.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Understanding-NEMA-3-Enclosures-and-NEMA-3R-Enclosures-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Understanding-NEMA-3-Enclosures-and-NEMA-3R-Enclosures-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Understanding-NEMA-3-Enclosures-and-NEMA-3R-Enclosures-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"NEMA_3_Enclosures\"><\/span><b>NEMA 3 \u5916\u58f3<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u5f53\u9700\u8981\u4fdd\u62a4\u7535\u6c14\u8bbe\u5907\u514d\u53d7\u6076\u52a3\u73af\u5883\u56e0\u7d20\u7684\u5f71\u54cd\u65f6\uff0cNEMA 3 \u5916\u58f3\u662f\u5b8c\u7f8e\u7684\u9009\u62e9\u3002\u8fd9\u4e9b\u5916\u58f3\u53ef\u4ee5\u9632\u5c18\u3001\u9632\u96e8\u548c\u9632\u843d\u5c18\u3002\u5b83\u4eec\u8fd8\u80fd\u907f\u514d\u7070\u5c18\u9897\u7c92\u8fdb\u5165\u5916\u58f3\u7684\u4e0d\u826f\u60c5\u51b5\u3002\u8fd9\u4e9b\u5916\u58f3\u8fd8\u5177\u6709\u9632\u7ed3\u51b0\u6027\u80fd\uff0c\u975e\u5e38\u9002\u5408\u6237\u5916\u4f7f\u7528\uff0c\u5373\u4f7f\u5728\u5168\u7403\u6c14\u6e29\u8f83\u4f4e\u7684\u5730\u533a\u4e5f\u662f\u5982\u6b64\u3002<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"NEMA_3R_Enclosures\"><\/span><b>NEMA 3R \u5916\u58f3<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u867d\u7136\u8fd9\u4e9b\u5916\u58f3\u4e13\u4e3a\u6237\u5916\u4f7f\u7528\u800c\u8bbe\u8ba1\uff0c\u4f46\u5b83\u4eec\u53ea\u80fd\u627f\u53d7\u96e8\u6c34\u3001\u5f3a\u98ce\u548c\u96e8\u5939\u96ea\u3002NEMA 3R \u5916\u58f3\u8fd8\u53ef\u4ee5\u89e3\u51b3\u98ce\u5439\u7070\u5c18\u7684\u95ee\u9898\uff1b\u7136\u800c\uff0c\u4e0e NEMA 3 \u4e0d\u540c\u7684\u662f\uff0c\u8fd9\u4e9b\u5916\u58f3\u5e76\u975e\u9632\u5c18\uff0c\u56e0\u6b64\u7ec6\u5c0f\u7684\u7070\u5c18\u9897\u7c92\u4ecd\u7136\u80fd\u591f\u4fb5\u5165\u5916\u58f3\u3002\u00a0<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Key_Differences_Between_NEMA_3_And_NEMA_3R\"><\/span><b>NEMA 3 \u548c NEMA 3R \u4e4b\u95f4\u7684\u4e3b\u8981\u533a\u522b<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-46629\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Key-Differences-Between-NEMA-3-And-NEMA-3R.jpg\" alt=\"NEMA 3 \u548c NEMA 3R \u4e4b\u95f4\u7684\u4e3b\u8981\u533a\u522b\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Key-Differences-Between-NEMA-3-And-NEMA-3R.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Key-Differences-Between-NEMA-3-And-NEMA-3R-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Key-Differences-Between-NEMA-3-And-NEMA-3R-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Key-Differences-Between-NEMA-3-And-NEMA-3R-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">\u51b3\u5b9a\u662f\u5426\u9009\u62e9 NEMA 3 \u800c\u4e0d\u662f NEMA 3R \u5b8c\u5168\u53d6\u51b3\u4e8e\u60a8\u7684\u9700\u6c42\u3002\u5b83\u4eec\u6709\u4e0d\u540c\u7684\u7279\u6027\uff0c\u5305\u62ec\u8010\u73af\u5883\u6027\u3001\u6210\u672c\u3001\u6750\u6599\u548c\u9632\u62a4\u7b49\u7ea7\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6982\u8ff0\uff1a<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Protection_Level\"><\/span><b>\u4fdd\u62a4\u7ea7\u522b<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u4e0e NEMA 3R \u5916\u58f3\u76f8\u6bd4\uff0cNEMA 3 \u5916\u58f3\u63d0\u4f9b\u66f4\u9ad8\u7ea7\u522b\u7684\u9632\u62a4\uff0c\u5e76\u4e14\u5b8c\u5168\u9632\u5c18\uff0c\u56e0\u6b64\u975e\u5e38\u9002\u5408\u7528\u4e8e\u5efa\u7b51\u5de5\u5730\u548c\u5de5\u5382\u3002NEMA 3R \u5916\u58f3\u80fd\u591f\u62b5\u5fa1\u96e8\u6c34\u548c\u51b0\u96ea\uff0c\u4f46\u5728\u8f83\u4e3a\u6e29\u548c\u7684\u73af\u5883\u4e0b\u6548\u679c\u66f4\u4f73\u3002<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Construction_and_Durability\"><\/span><b>\u7ed3\u6784\u548c\u8010\u7528\u6027<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">NEMA 3 \u5916\u58f3\u91c7\u7528\u4e0d\u9508\u94a2\u6216 <\/span><a href=\"https:\/\/www.kdmsteel.com\/zh\/\u9540\u950c\u94a2\u7bb1\/\"><span style=\"font-weight: 400;\">\u9540\u950c\u94a2\u3002<\/span><\/a><span style=\"font-weight: 400;\"> \u8fd9\u4e9b\u6750\u6599\u975e\u5e38\u575a\u56fa\u4e14\u8010\u8150\u8680\u3002\u6b64\u5916\uff0c\u8fd9\u4e9b\u673a\u67dc\u7684\u95e8\u53ef\u4ee5\u6253\u5f00\u548c\u5173\u95ed\uff0c\u63a5\u7f1d\u4e5f\u975e\u5e38\u7262\u56fa\uff0c\u9632\u5c18\u9632\u6c34\u3002\u6709\u4e9b\u673a\u67dc\u751a\u81f3\u8fd8\u8bbe\u6709\u901a\u98ce\u53e3\uff0c\u7528\u4e8e\u63a7\u5236\u6e29\u5ea6\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">NEMA 3R \u5916\u58f3\u7531\u94dd\u6216\u4f4e\u78b3\u94a2\u5236\u6210\uff0c\u8fd9\u4e9b\u6750\u6599\u66f4\u8f7b\u3002\u5b83\u4eec\u5f3a\u5ea6\u7565\u4f4e\uff0c\u4f46\u4ef7\u683c\u4e5f\u66f4\u4f4e\u3002\u8fd9\u4e9b\u5916\u58f3\u53ef\u80fd\u4e0d\u5177\u5907 NEMA 3 \u7684\u5148\u8fdb\u5bc6\u5c01\u6216\u529f\u80fd\uff0c\u56e0\u6b64\u5728\u6076\u52a3\u6761\u4ef6\u4e0b\u7684\u4f7f\u7528\u6027\u80fd\u8f83\u5dee\u3002<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cost_and_Maintenance\"><\/span><b>\u6210\u672c\u548c\u7ef4\u62a4<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">NEMA 3 \u5916\u58f3\u7531\u4e8e\u91c7\u7528\u66f4\u9ad8\u8d28\u91cf\u7684\u6750\u6599\u800c\u4ef7\u683c\u66f4\u9ad8\u3002\u8fd9\u4e9b\u5916\u58f3\u7ef4\u62a4\u6210\u672c\u66f4\u4f4e\uff0c\u5e76\u4e14\u5728\u4e25\u82db\u73af\u5883\u4e0b\u4f7f\u7528\u5bff\u547d\u66f4\u957f\uff0c\u56e0\u6b64\u4ef7\u683c\u901a\u5e38\u5408\u7406\u3002\u56e0\u6b64\uff0c\u5bf9\u4e8e\u4f9d\u8d56\u8bbe\u5907\u529f\u80fd\u7684\u884c\u4e1a\uff08\u4f8b\u5982\u77f3\u6cb9\u548c\u5929\u7136\u6c14\u884c\u4e1a\uff09\uff0c\u60a8\u53ef\u4ee5\u9009\u62e9\u5b83\u4eec\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">NEMA 3R \u673a\u67dc\u4ef7\u683c\u4f4e\u5ec9\uff0c\u662f\u9884\u7b97\u6709\u9650\u65f6\u7684\u7406\u60f3\u9009\u62e9\u3002\u7136\u800c\uff0c\u7531\u4e8e\u8bbe\u8ba1\u8f83\u4e3a\u7b80\u5355\uff0c\u8fd9\u7c7b\u673a\u67dc\u5728\u591a\u5c18\u6216\u6f6e\u6e7f\u7684\u73af\u5883\u4e0b\u53ef\u80fd\u9700\u8981\u66f4\u591a\u7ef4\u62a4\u3002\u5373\u4fbf\u5982\u6b64\uff0cNEMA 3R \u5728\u6e29\u548c\u6c14\u5019\u6761\u4ef6\u4e0b\u4ecd\u7136\u5177\u6709\u6210\u672c\u6548\u76ca\u3002<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Compliance_and_Standards\"><\/span><b>\u5408\u89c4\u6027\u548c\u6807\u51c6<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">NEMA 3 \u5916\u58f3\u7684\u6784\u9020\u7b26\u5408 NEMA \u4e25\u683c\u7684\u9632\u5c18\u9632\u96e8\u4fdd\u62a4\u8981\u6c42\u3002\u6b64\u7c7b\u5916\u58f3\u8fd8\u62e5\u6709\u989d\u5916\u7684\u8ba4\u8bc1\uff0c\u5305\u62ec UL \u5371\u9669\u573a\u6240\u8ba4\u8bc1\u3002\u8fd9\u4f7f\u5f97\u5b83\u4eec\u53ef\u4ee5\u5728\u5b58\u5728\u6613\u71c3\u84b8\u6c7d\u6216\u6c14\u4f53\u7684\u533a\u57df\u4f7f\u7528\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">NEMA 3R \u5916\u58f3\u4e0d\u7b26\u5408 NEMA \u7684\u57fa\u672c\u9632\u96e8\u96ea\u6807\u51c6\uff0c\u56e0\u6b64\u4e0d\u6ee1\u8db3\u5371\u9669\u573a\u6240\u7684\u8ba4\u8bc1\u8981\u6c42\u3002\u56e0\u6b64\uff0c\u60a8\u53ea\u80fd\u5728\u975e\u5371\u9669\u533a\u57df\u4f7f\u7528\u5b83\u4eec\u3002<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Applications_and_Use_Cases\"><\/span><b>\u5e94\u7528\u7a0b\u5e8f\u548c\u7528\u4f8b<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-46630\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Applications-and-Use-Cases.jpg\" alt=\"\u5e94\u7528\u7a0b\u5e8f\u548c\u7528\u4f8b\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Applications-and-Use-Cases.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Applications-and-Use-Cases-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Applications-and-Use-Cases-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Applications-and-Use-Cases-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">NEMA 3 \u548c NEMA 3R \u5916\u58f3\u4e4b\u95f4\u7684\u533a\u522b\u53d6\u51b3\u4e8e\u5b83\u4eec\u7684\u9884\u671f\u7528\u9014\u3002\u00a0<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"NEMA_3_Enclosures-2\"><\/span><b>NEMA 3 \u5916\u58f3<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u5236\u9020\u5de5\u5382\uff1a\u4fdd\u62a4\u63a7\u5236\u9762\u677f\u514d\u53d7\u7070\u5c18\u3001\u6e7f\u6c14\u548c\u5267\u70c8\u7684\u7269\u7406\u6d3b\u52a8\u7684\u5f71\u54cd\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u5316\u5b66\u5904\u7406\u8bbe\u65bd\uff1a\u4fdd\u62a4\u7535\u6c14\u8bbe\u5907\u514d\u53d7\u523a\u6fc0\u6027\u5316\u5b66\u7269\u8d28\u548c\u84b8\u6c7d\u7684\u4fb5\u5bb3\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u70bc\u6cb9\u5382\u548c\u5929\u7136\u6c14\u5382\uff1a\u5305\u542b\u6613\u53d7\u7070\u5c18\u3001\u6781\u7aef\u5929\u6c14\u3001\u6613\u71c3\u6c14\u4f53\u548c\u5927\u91cf\u6e7f\u5ea6\u5f71\u54cd\u7684\u91cd\u8981\u57fa\u7840\u8bbe\u65bd\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u5e9f\u6c34\u5904\u7406\u5382\uff1a\u6db5\u76d6\u6c34\u3001\u6e7f\u6c14\u548c\u8150\u8680\u6027\u6c14\u4f53\u7684\u7535\u6c14\u57fa\u7840\u8bbe\u65bd\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u98df\u54c1\u52a0\u5de5\u8bbe\u65bd\uff1a\u4fdd\u62a4\u8bbe\u5907\u514d\u53d7\u536b\u751f\u6e05\u6d01\u5316\u5b66\u54c1\u548c\u98df\u54c1\u9897\u7c92\u7684\u4fb5\u5bb3\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u5efa\u7b51\u5de5\u5730\uff1a\u4fdd\u62a4\u4e34\u65f6\u7535\u6c14\u5de5\u7a0b\u514d\u53d7\u96e8\u6c34\u3001\u7070\u5c18\u548c\u7269\u7406\u635f\u574f\u7684\u5f71\u54cd\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u91c7\u77ff\u4f5c\u4e1a\uff1a\u5728\u9ad8\u6e7f\u5ea6\u548c\u9ad8\u7070\u5c18\u7684\u6076\u52a3\u6761\u4ef6\u4e0b\u4fdd\u62a4\u7535\u6c14\u8bbe\u5907\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u519c\u4e1a\u8bbe\u65bd\uff1a\u4fdd\u62a4\u8c37\u4ed3\u3001\u6e29\u5ba4\u548c\u52a0\u5de5\u5355\u4f4d\u4e2d\u7684\u8bbe\u5907\u514d\u53d7\u6e7f\u6c14\u3001\u5316\u5b66\u7269\u8d28\u548c\u7070\u5c18\u7684\u5f71\u54cd\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u51b7\u5b89\u88c5\uff1a\u4fdd\u8bc1\u5728\u5927\u96ea\u6216\u7ed3\u51b0\u5730\u533a\u4e5f\u80fd\u6b63\u5e38\u8fd0\u4f5c\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u6d17\u8f66\u670d\u52a1\uff1a\u627f\u53d7\u81ea\u52a8\u6d17\u8f66\u7cfb\u7edf\u4e2d\u7684\u5316\u5b66\u7269\u8d28\u548c\u6c34\u6cc4\u6f0f\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u6d77\u6d0b\u573a\u6240\uff1a\u9632\u6b62\u8bbe\u5907\u56e0\u6d77\u6c34\u548c\u6e7f\u6c14\u800c\u53d7\u635f\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u5bb6\u7528\u8bbe\u65bd\u5b89\u88c5\uff1a\u5305\u62ec\u6613\u53d7\u96e8\u6c34\u3001\u7070\u5c18\u548c\u98ce\u5f71\u54cd\u7684\u53d8\u538b\u5668\u3001\u5f00\u5173\u8bbe\u5907\u548c\u901a\u4fe1\u7cfb\u7edf\u3002<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"NEMA_3R_Enclosures-2\"><\/span><b>NEMA 3R \u5916\u58f3<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u4fee\u590d\u7684\u6237\u5916\u7535\u6c14\u9762\u677f\uff1a\u5728\u6e29\u548c\u6c14\u5019\u6761\u4ef6\u4e0b\u4fdd\u62a4\u5bb6\u5ead\u7535\u6c14\u7cfb\u7edf\u514d\u53d7\u96e8\u6c34\u548c\u96e8\u5939\u96ea\u7684\u4fb5\u88ad\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u5de5\u5177\u4eea\u8868\uff1a\u4fdd\u62a4\u8f7b\u578b\u4f4f\u5b85\u548c\u5546\u4e1a\u573a\u6240\u4e2d\u7684\u4eea\u8868\u514d\u53d7\u5929\u6c14\u5f71\u54cd\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u95ea\u7535\u63a7\u5236\uff1a\u5305\u542b\u8fb9\u754c\u7167\u660e\u5b9a\u65f6\u5668\u548c\u82b1\u56ed\u548c\u505c\u8f66\u573a\u7684\u63a7\u5236\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">HVAC \u7cfb\u7edf\u63a7\u5236\uff1a\u9632\u6b62\u96e8\u6c34\u548c\u6e7f\u6c14\u635f\u574f\u4f4f\u5b85\u533a\u7684\u4f9b\u6696\u548c\u5236\u51b7\u7ec4\u4ef6\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u5c0f\u578b\u4f01\u4e1a\uff1a\u4fdd\u62a4\u96f6\u552e\u5546\u5e97\u3001\u529e\u516c\u5ba4\u6216\u5496\u5561\u9986\u7684\u914d\u7535\u76d8\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u96f6\u552e\u5e97\uff1a\u4fdd\u62a4\u6237\u5916\u6807\u724c\u63a7\u5236\u548c\u7535\u6c14\u7cfb\u7edf\u514d\u53d7\u5c0f\u96e8\u548c\u7070\u5c18\u7684\u4fb5\u88ad\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u529e\u516c\u697c\uff1a\u5305\u542b\u5907\u7528\u53d1\u7535\u673a\u6216\u516c\u5171\u7535\u529b\u5206\u914d\u7cfb\u7edf\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u4e2d\u7b49\u6c14\u5019\u8bbe\u65bd\uff1a\u9002\u5408\u5c0f\u96e8\u4e14\u975e\u6781\u7aef\u6e29\u5ea6\u7684\u5730\u533a\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u7ecf\u6d4e\u9879\u76ee\uff1a\u4e3a\u9884\u7b97\u76f8\u5f53\u4f4e\u7684\u8bbe\u65bd\u751a\u81f3\u4e34\u65f6\u8bbe\u65bd\u63d0\u4f9b\u7ecf\u6d4e\u5b9e\u60e0\u7684\u4fdd\u62a4\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u77ed\u671f\u5b89\u88c5\uff1a\u9002\u7528\u4e8e\u9700\u8981\u77ed\u671f\u8bbe\u7f6e\u7684\u6237\u5916\u8282\u65e5\u548c\u5176\u4ed6\u6d3b\u52a8\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u6237\u5916\u7167\u660e\uff1a\u8857\u9053\u3001\u505c\u8f66\u573a\u548c\u5c0f\u8def\u7684\u706f\u5747\u53d7\u5230\u9632\u96e8\u548c\u96e8\u5939\u96ea\u7684\u4fdd\u62a4\u3002<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u4f4f\u5b85 HVAC \u88c5\u7f6e\uff1a\u5ba4\u5916\u7a7a\u8c03\u88c5\u7f6e\u53ef\u62b5\u5fa1\u6e29\u548c\u5929\u6c14\u3002<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Environmental_Considerations\"><\/span><b>\u73af\u5883\u8003\u8651<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-46634\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Environmental-Considerations.jpg\" alt=\"\u73af\u5883\u8003\u8651\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Environmental-Considerations.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Environmental-Considerations-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Environmental-Considerations-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Environmental-Considerations-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">\u5f53\u60a8\u8003\u8651 NEMA 3 \u548c NEMA 3R \u5916\u58f3\u65f6\uff0c\u6709\u4e00\u4e9b\u7406\u7531\u9700\u8981\u8003\u8651\u8fd9\u4e9b\u4e0e\u73af\u5883\u76f8\u5173\u7684\u9009\u9879\u3002\u8bf7\u8003\u8651\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Weather_Conditions\"><\/span><b>\u5929\u6c14\u72b6\u51b5<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u5982\u679c\u60a8\u7684\u8bbe\u5907\u9700\u8981\u627f\u53d7\u66b4\u96e8\u3001\u66b4\u96ea\u548c\u51b0\u96ea\u7684\u4fb5\u88ad\uff0c\u5219\u5e94\u9009\u62e9 NEMA 3 \u9632\u62a4\u7b49\u7ea7\u3002\u8fd9\u7c7b\u9632\u62a4\u7f69\u5bc6\u5c01\u6027\u66f4\u4f73\uff0c\u66f4\u9002\u5408\u5e94\u5bf9\u6781\u7aef\u5929\u6c14\u3002NEMA 3R \u9632\u62a4\u7f69\u5728\u5c0f\u96e8\u6216\u96e8\u5939\u96ea\u5929\u6c14\u4e0b\u4ecd\u80fd\u6b63\u5e38\u5de5\u4f5c\uff0c\u4f46\u65e0\u6cd5\u627f\u53d7\u66f4\u6076\u52a3\u7684\u73af\u5883\u3002<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dust_and_Debris\"><\/span><b>\u7070\u5c18\u548c\u788e\u7247<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u5982\u679c\u60a8\u7684\u5de5\u4f5c\u533a\u57df\u7070\u5c18\u8f83\u591a\uff0c\u4f8b\u5982\u5efa\u7b51\u5de5\u5730\u6216\u5de5\u5382\uff0c\u5219\u9700\u8981 NEMA 3\uff0c\u56e0\u4e3a\u5b83\u5177\u6709\u9632\u5c18\u529f\u80fd\u3002NEMA 3R \u9002\u7528\u4e8e\u7070\u5c18\u8f83\u5c11\u7684\u73af\u5883\u3002<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Temperature_and_Humidity\"><\/span><b>\u6e29\u5ea6\u548c\u6e7f\u5ea6<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u4e24\u79cd\u5916\u58f3\u5747\u53ef\u627f\u53d7\u4e0d\u540c\u7684\u6e29\u5ea6\uff0c\u4f46\u5728\u6781\u7aef\u60c5\u51b5\u4e0b\uff0cNEMA 3 \u662f\u66f4\u597d\u7684\u9009\u62e9\u3002\u5728\u6e7f\u5ea6\u53d8\u5316\u8f83\u5927\u6216\u6e7f\u5ea6\u8f83\u9ad8\u7684\u573a\u6240\uff0c\u6700\u597d\u9009\u62e9 NEMA 3\uff0c\u56e0\u4e3a\u5b83\u80fd\u4e3a\u8bbe\u5907\u63d0\u4f9b\u66f4\u591a\u4fdd\u62a4\u3002NEMA 3R \u66f4\u9002\u5408\u6761\u4ef6\u4e0d\u90a3\u4e48\u6076\u52a3\u7684\u6e29\u548c\u6c14\u5019\u3002<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><b>\u7ed3\u8bba<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-46631\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Conclusion-4-4.jpg\" alt=\"\u7ed3\u8bba\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Conclusion-4-4.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Conclusion-4-4-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Conclusion-4-4-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/Conclusion-4-4-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">\u5728 NEMA 3 \u548c NEMA 3R \u5916\u58f3\u4e4b\u95f4\u8fdb\u884c\u9009\u62e9\u65f6\uff0c\u8bc4\u4f30\u60a8\u7684\u73af\u5883\u548c\u9884\u671f\u7528\u9014\u81f3\u5173\u91cd\u8981\u3002\u5982\u679c\u60a8\u5728\u6781\u5176\u6076\u52a3\u7684\u6761\u4ef6\u4e0b\u5de5\u4f5c\uff0cNEMA 3 \u5c06\u662f\u6700\u4f73\u9009\u62e9\u3002\u6216\u8005\uff0cNEMA 3R \u66f4\u9002\u5408\u8f83\u4e3a\u6e29\u548c\u7684\u73af\u5883\uff0c\u5e76\u4e14\u6700\u5177\u6210\u672c\u6548\u76ca\u3002\u8bf7\u8bb0\u4f4f\uff0c\u6ee1\u8db3\u8bbe\u5907\u7684\u8981\u6c42\u662f\u6700\u7ec8\u51b3\u5b9a\u7684\u5173\u952e\u3002<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQs\"><\/span><b>\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-46632\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/FAQs-3-2.jpg\" alt=\"\u5e38\u89c1\u95ee\u9898\u89e3\u7b54\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/FAQs-3-2.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/FAQs-3-2-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/FAQs-3-2-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2025\/03\/FAQs-3-2-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Are_NEMA_3R_enclosures_suitable_for_use_under_severe_weather_conditions\"><\/span><b>NEMA 3R \u5916\u58f3\u9002\u5408\u5728\u6076\u52a3\u5929\u6c14\u6761\u4ef6\u4e0b\u4f7f\u7528\u5417\uff1f<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u867d\u7136\u96e8\u96ea\u5929\u6c14\u5bf9 NEMA 3R \u5916\u58f3\u6765\u8bf4\u4e0d\u6210\u95ee\u9898\uff0c\u4f46\u5b83\u4eec\u65e0\u6cd5\u62b5\u5fa1\u6076\u52a3\u5929\u6c14\u3002\u76f8\u53cd\uff0c\u7070\u5c18\u3001\u79ef\u6c34\u6216\u51b0\u96ea\u8f83\u591a\u7684\u533a\u57df\u5219\u9700\u8981 NEMA 3 \u5916\u58f3\u3002<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>When it comes to selecting an enclosure for electrical equipment, both NEMA 3 and NEMA 3R enclosure designs are popular. However, it\u2019s essential to know the differences between NEMA enclosures. This guide will help you understand what each NEMA enclosure provides, their features, protection levels, and when you can use which type. By the end, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":46627,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"disabled","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-46623","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>NEMA 3 vs 3R Enclosure \u2013 Key Differences You Should Know - KDM Steel<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kdmsteel.com\/zh\/nema-3-\u4e0e-3r-\u5916\u58f3-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NEMA 3 vs 3R Enclosure \u2013 Key Differences You Should Know - KDM Steel\" \/>\n<meta property=\"og:description\" content=\"When it comes to selecting an enclosure for electrical equipment, both NEMA 3 and NEMA 3R enclosure designs are popular. 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However, it\u2019s essential to know the differences between NEMA enclosures. This guide will help you understand what each NEMA enclosure provides, their features, protection levels, and when you can use which type. 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