{"id":2690,"date":"2026-03-25T07:20:41","date_gmt":"2026-03-25T07:20:41","guid":{"rendered":"https:\/\/niunielec.com\/?post_type=product&#038;p=2690"},"modified":"2026-03-31T07:42:00","modified_gmt":"2026-03-31T07:42:00","slug":"4000a-silver-plated-sulfur-treated-contact-arm-for-vacuum-circuit-breakers","status":"publish","type":"product","link":"https:\/\/niunielec.com\/pt\/product\/4000a-silver-plated-sulfur-treated-contact-arm-for-vacuum-circuit-breakers\/","title":{"rendered":"4000A Silver-Plated Sulfur-Treated Contact Arm for Vacuum Circuit Breaker"},"content":{"rendered":"<h2 id=\"h2-1\"><span style=\"font-size: 75%;\"><strong>4000A Silver-Plated Sulfur-Treated Contact Arm for Vacuum Circuit Breaker<\/strong><\/span><\/h2>\n<div>\n<p><strong>Detalhes do produto<\/strong><\/p>\n<p>Our 4000A contact arm is an ultra-high-capacity conductive component engineered for 10kV\/12kV indoor vacuum circuit breakers and medium voltage switchgear. As a professional China contact arm manufacturer, we deliver robust solutions for heavy-duty power transmission and industrial electrical projects.<\/p>\n<\/div>\n<ul>\n<li><strong>Material &amp; Surface Treatment:<\/strong> Crafted from high-conductivity red copper (pure copper), with precision silver plating combined with sulfurization treatment to maximize conductivity, corrosion resistance, and service life under extreme 4000A high-current loads.<\/li>\n<li><strong>Conce\u00e7\u00e3o estrutural:<\/strong> Precision CNC machined with a multi-hole top structure for stable installation, ensuring a tight, secure fit with tulip contacts and circuit breaker mechanisms, guaranteeing consistent current flow and minimal contact resistance.<\/li>\n<li><strong>Cen\u00e1rios de aplica\u00e7\u00e3o:<\/strong> Fully compatible with 4000A rated vacuum circuit breakers and switchgear, ideal for large-scale power transmission, heavy industrial power distribution, and power station applications. Custom dimensions are available to match major global circuit breaker brands.<\/li>\n<li><strong>Qualidade e fornecimento:<\/strong> Manufactured in China with rigorous electrical performance and mechanical life testing. We provide efficient bulk supply and delivery services to Asia, Europe, the Middle East, and other regions, adhering to international IEC and GB standards.<\/li>\n<\/ul>\n<h3><strong><span style=\"font-size: 75%;\">4000A Silver Plated Sulfur Treated Contact Arm for Vacuum Circuit Breaker<\/span><\/strong><\/h3>\n<p><strong>Desenho<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2699\" src=\"https:\/\/niunielec.com\/wp-content\/uploads\/2026\/03\/4000a-silver-plated-sulfur-treated-contact-arm-for-vacuum-circuit-breakers-drawing-768x469.webp\" alt=\"4000a silver plated sulfur treated contact arm for vacuum circuit breakers\" width=\"768\" height=\"469\" srcset=\"https:\/\/niunielec.com\/wp-content\/uploads\/2026\/03\/4000a-silver-plated-sulfur-treated-contact-arm-for-vacuum-circuit-breakers-drawing-768x469.webp 768w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/03\/4000a-silver-plated-sulfur-treated-contact-arm-for-vacuum-circuit-breakers-drawing-440x269.webp 440w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/03\/4000a-silver-plated-sulfur-treated-contact-arm-for-vacuum-circuit-breakers-drawing-18x12.webp 18w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/03\/4000a-silver-plated-sulfur-treated-contact-arm-for-vacuum-circuit-breakers-drawing-600x367.webp 600w, https:\/\/niunielec.com\/wp-content\/uploads\/2026\/03\/4000a-silver-plated-sulfur-treated-contact-arm-for-vacuum-circuit-breakers-drawing.webp 885w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>4000A silver-plated sulfur-treated contact arm for vacuum circuit breakers. As a trusted China contact arm manufacturer, we offer high-conductivity pure copper components for reliable ultra-high-current power distribution.<\/p>","protected":false},"featured_media":2697,"comment_status":"open","ping_status":"closed","template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"4000A Silver Plated Sulfur Treated Contact Arm for Vacuum Circuit Breaker","_seopress_titles_desc":"4000A silver-plated sulfur-treated contact arm for vacuum circuit breaker. Pure copper, ultra-high current reliability. China contact arm manufacturer supplies custom solutions for global power distribution.","_seopress_robots_index":""},"product_brand":[],"product_cat":[24,38],"product_tag":[171,103,173],"class_list":{"0":"post-2690","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-vacuum-circuit-breaker-accessories","7":"product_cat-contact-arm","8":"product_tag-contact-arm","9":"product_tag-high-voltage","10":"product_tag-vacuum-circuit-breaker-contact-arm","12":"first","13":"instock","14":"shipping-taxable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/niunielec.com\/pt\/wp-json\/wp\/v2\/product\/2690","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/niunielec.com\/pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/niunielec.com\/pt\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/niunielec.com\/pt\/wp-json\/wp\/v2\/comments?post=2690"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/niunielec.com\/pt\/wp-json\/wp\/v2\/media\/2697"}],"wp:attachment":[{"href":"https:\/\/niunielec.com\/pt\/wp-json\/wp\/v2\/media?parent=2690"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/niunielec.com\/pt\/wp-json\/wp\/v2\/product_brand?post=2690"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/niunielec.com\/pt\/wp-json\/wp\/v2\/product_cat?post=2690"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/niunielec.com\/pt\/wp-json\/wp\/v2\/product_tag?post=2690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}