{"id":3646,"date":"2026-08-15T01:00:00","date_gmt":"2026-08-15T01:00:00","guid":{"rendered":"https:\/\/chac-electric.com\/blog\/dc-contactor-load-polarity-rfq\/"},"modified":"2026-08-17T03:29:13","modified_gmt":"2026-08-17T03:29:13","slug":"%d8%b7%d9%84%d8%a8-%d8%b9%d8%b1%d9%88%d8%b6-%d8%a3%d8%b3%d8%b9%d8%a7%d8%b1-%d9%85%d9%88%d8%b5%d9%84-%d8%aa%d9%8a%d8%a7%d8%b1-%d9%85%d8%b3%d8%aa%d9%85%d8%b1-%d9%82%d8%b7%d8%a8%d9%8a%d8%a9-%d8%a7%d9%84","status":"publish","type":"post","link":"https:\/\/chac-electric.com\/ar\/blog\/dc-contactor-load-polarity-rfq\/","title":{"rendered":"\u0645\u0627\u0630\u0627 \u064a\u062c\u0628 \u0623\u0646 \u064a\u064f\u0638\u0647\u0631 \u0637\u0644\u0628 \u062a\u0642\u062f\u064a\u0645 \u0627\u0644\u0639\u0631\u0648\u0636 (RFQ) \u0627\u0644\u062e\u0627\u0635 \u0628\u0645\u0642\u0644\u0627\u0645 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631 (DC Contactor) \u0641\u064a\u0645\u0627 \u064a\u062a\u0639\u0644\u0642 \u0628\u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u062d\u0645\u0644\u061f"},"content":{"rendered":"<div class=\"b2b-article\">\n<p>\u064a\u0635\u0628\u062d \u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 (RFQ) \u0627\u0644\u062e\u0627\u0635 \u0628\u0645\u0648\u0635\u0644 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631 (DC contactor) \u0623\u0633\u0647\u0644 \u0641\u064a \u0627\u0644\u0645\u0631\u0627\u062c\u0639\u0629 \u0639\u0646\u062f\u0645\u0627 \u064a\u062d\u062f\u062f <strong>\u062a\u062d\u0645\u064a\u0644 \u0627\u0644\u0642\u0637\u0628\u064a\u0629<\/strong> \u0648 <strong>\u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u0645\u0644\u0641<\/strong> \u0628\u0634\u0643\u0644 \u0645\u0646\u0641\u0635\u0644. \u0623\u0636\u0641 \u062c\u0647\u062f \u0627\u0644\u062a\u0634\u063a\u064a\u0644\u060c \u0627\u0644\u062a\u064a\u0627\u0631\u060c \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u060c \u062f\u0648\u0631\u0629 \u0627\u0644\u062a\u0628\u062f\u064a\u0644\u060c \u0648\u0633\u062c\u0644 \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u062f\u0642\u064a\u0642 \u0628\u062c\u0627\u0646\u0628 \u062a\u0644\u0643 \u0627\u0644\u062d\u0642\u0648\u0644\u061b \u0648\u0625\u0644\u0627 \u0641\u0642\u062f \u062a\u0628\u062f\u0648 \u0627\u0644\u0625\u062c\u0627\u0628\u0629 \u0643\u0627\u0645\u0644\u0629 \u0628\u064a\u0646\u0645\u0627 \u062a\u0638\u0644 \u0645\u0633\u0623\u0644\u0629 \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u062f\u0648\u0646 \u0625\u062c\u0627\u0628\u0629.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-3685 aligncenter\" src=\"https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/08\/064ea729f66c47748013ec2f369c41c8-1024x683.webp\" alt=\"\u0645\u0627\u0630\u0627 \u064a\u062c\u0628 \u0623\u0646 \u064a\u064f\u0638\u0647\u0631 \u0637\u0644\u0628 \u062a\u0642\u062f\u064a\u0645 \u0627\u0644\u0639\u0631\u0648\u0636 (RFQ) \u0627\u0644\u062e\u0627\u0635 \u0628\u0645\u0642\u0644\u0627\u0645 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631 (DC Contactor) \u0641\u064a\u0645\u0627 \u064a\u062a\u0639\u0644\u0642 \u0628\u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u062d\u0645\u0644\u061f\" width=\"1024\" height=\"683\" srcset=\"https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/08\/064ea729f66c47748013ec2f369c41c8-1024x683.webp 1024w, https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/08\/064ea729f66c47748013ec2f369c41c8-300x200.webp 300w, https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/08\/064ea729f66c47748013ec2f369c41c8-768x512.webp 768w, https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/08\/064ea729f66c47748013ec2f369c41c8-1536x1024.webp 1536w, https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/08\/064ea729f66c47748013ec2f369c41c8-2048x1365.webp 2048w, https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/08\/064ea729f66c47748013ec2f369c41c8-18x12.webp 18w, https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/08\/064ea729f66c47748013ec2f369c41c8-600x400.webp 600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p><span style=\"color: #353535; font-size: 35px; font-weight: bold;\">\u0645\u062d\u062a\u0648\u064a\u0627\u062a<\/span><\/p>\n<nav class=\"b2b-toc\">\n<ul>\n<li><a href=\"#part-1-separate-the-two-polarity-questions-before-reviewing-a-contactor\">\u0627\u0644\u062c\u0632\u0621 1. \u0627\u0641\u0635\u0644 \u0628\u064a\u0646 \u0633\u0624\u0627\u0644\u064a \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0642\u0628\u0644 \u0645\u0631\u0627\u062c\u0639\u0629 \u0627\u0644\u0645\u0648\u0635\u0644<\/a><\/li>\n<li><a href=\"#part-2-read-the-product-record-without-inferring-terminal-behaviour\">\u0627\u0644\u062c\u0632\u0621 2. \u0642\u0631\u0627\u0621\u0629 \u0633\u062c\u0644 \u0627\u0644\u0645\u0646\u062a\u062c \u062f\u0648\u0646 \u0627\u0633\u062a\u0646\u062a\u064e\u0627\u062c \u0633\u0644\u0648\u0643 \u0627\u0644\u0645\u062d\u0637\u0629 \u0627\u0644\u0637\u0631\u0641\u064a\u0629<\/a><\/li>\n<li><a href=\"#part-3-build-the-circuit-context-around-the-polarity-field\">\u0627\u0644\u062c\u0632\u0621 3. \u0628\u0646\u0627\u0621 \u0633\u064a\u0627\u0642 \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u062d\u0648\u0644 \u062d\u0642\u0644 \u0627\u0644\u0642\u0637\u0628\u064a\u0629<\/a><\/li>\n<li><a href=\"#part-4-turn-polarity-into-a-reviewable-rfq-line\">\u0627\u0644\u062c\u0632\u0621 4. \u062a\u062d\u0648\u064a\u0644 \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0625\u0644\u0649 \u0628\u0646\u062f \u0637\u0644\u0628 \u0639\u0631\u0636 \u0633\u0639\u0631 (RFQ) \u0642\u0627\u0628\u0644 \u0644\u0644\u0645\u0631\u0627\u062c\u0639\u0629<\/a><\/li>\n<li><a href=\"#part-5-where-the-ste2-product-page-fits-the-record\">\u0627\u0644\u062c\u0632\u0621 5. \u0623\u064a\u0646 \u062a\u0642\u0639 \u0635\u0641\u062d\u0629 \u0645\u0646\u062a\u062c STE2 \u0641\u064a \u0627\u0644\u0633\u062c\u0644<\/a><\/li>\n<li><a href=\"#part-6-keep-the-selection-result-inside-its-evidence-boundary\">\u0627\u0644\u062c\u0632\u0621 6. \u062d\u0627\u0641\u0638 \u0639\u0644\u0649 \u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u062a\u062d\u062f\u064a\u062f \u062f\u0627\u062e\u0644 \u062d\u062f\u0648\u062f \u0627\u0644\u0623\u062f\u0644\u0629 \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0647\u0627<\/a><\/li>\n<\/ul>\n<\/nav>\n<h2 id=\"part-1-separate-the-two-polarity-questions-before-reviewing-a-contactor\">\u0627\u0644\u062c\u0632\u0621 1. \u0627\u0641\u0635\u0644 \u0628\u064a\u0646 \u0633\u0624\u0627\u0644\u064a \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0642\u0628\u0644 \u0645\u0631\u0627\u062c\u0639\u0629 \u0627\u0644\u0645\u0648\u0635\u0644<\/h2>\n<p>\u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u062d\u0645\u0644 \u062a\u0635\u0641 \u062c\u0627\u0646\u0628 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631 \u0627\u0644\u0630\u064a \u064a\u064f\u062a\u0648\u0642\u0639 \u0623\u0646 \u062a\u0642\u0648\u0645 \u0627\u0644\u0645\u0644\u0627\u0645\u0633\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u0628\u062a\u0628\u062f\u064a\u0644\u0647. \u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u0645\u0644\u0641 \u062a\u062a\u0639\u0644\u0642 \u0628\u062a\u0648\u0635\u064a\u0644 \u0645\u0644\u0641 \u062c\u0627\u0646\u0628 \u0627\u0644\u062a\u062d\u0643\u0645. \u0625\u0646\u0647\u0645\u0627 \u064a\u062c\u064a\u0628\u0627\u0646 \u0639\u0646 \u0633\u0624\u0627\u0644\u064a\u0646 \u0645\u062e\u062a\u0644\u0641\u064a\u0646\u060c \u0644\u0630\u0627 \u064a\u062c\u0628 \u0639\u062f\u0645 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0625\u062d\u062f\u0627\u0647\u0645\u0627 \u0643\u0628\u062f\u064a\u0644 \u0644\u0644\u0623\u062e\u0631\u0649 \u0641\u064a \u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 \u062a\u062d\u062a \u0623\u064a \u0638\u0631\u0641.<\/p>\n<p>\u0627\u0644\u062a\u0645\u064a\u064a\u0632 \u0645\u0647\u0645 \u0644\u0623\u0646 \u0633\u062c\u0644 \u0627\u0644\u0645\u0646\u062a\u062c \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u062d\u062f\u062f \u0634\u0631\u0637\u0627\u064b \u0644\u0645\u0633\u0627\u0631 \u0627\u0644\u062d\u0645\u0644 \u0628\u064a\u0646\u0645\u0627 \u0644\u0627 \u064a\u0632\u0627\u0644 \u0644\u062f\u0649 \u0627\u0644\u0645\u0634\u062a\u0631\u064a \u0648\u0627\u062c\u0647\u0629 \u062a\u062d\u0643\u0645 \u0645\u0646\u0641\u0635\u0644\u0629 \u0644\u062a\u062d\u062f\u064a\u062f\u0647\u0627. \u0633\u0624\u0627\u0644 \u0627\u0644\u0628\u062d\u062b \u0627\u0644\u062d\u0642\u064a\u0642\u064a - \u0639\u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u062a\u062c\u0627\u0647 \u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u0645\u0648\u0635\u0644 \u0645\u0647\u0645\u064b\u0627 - \u064a\u0648\u0636\u062d \u0633\u0628\u0628 \u0627\u062d\u062a\u064a\u0627\u062c \u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 (RFQ) \u0625\u0644\u0649 \u0643\u0644\u0627 \u0627\u0644\u062d\u0642\u0644\u064a\u0646 \u0642\u0628\u0644 \u0623\u0646 \u064a\u0642\u0648\u0645 \u0623\u064a \u0634\u062e\u0635 \u0628\u062a\u0641\u0633\u064a\u0631 \u0631\u0633\u0645 \u062a\u062e\u0637\u064a\u0637\u064a \u0623\u0648 \u0628\u064a\u0627\u0646 \u0641\u064a \u0643\u062a\u0627\u0644\u0648\u062c.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u062d\u0642\u0644 \u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631<\/th>\n<th>\u0645\u0627 \u064a\u062d\u062f\u062f\u0647<\/th>\n<th>\u0645\u0627 \u0644\u0627 \u062a\u0642\u0631\u0631\u0647<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u062d\u0645\u0644<\/td>\n<td>\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0644\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0637\u0627\u0642\u0629<\/td>\n<td>\u062a\u063a\u0630\u064a\u0629 \u0627\u0644\u0645\u0644\u0641 \u0623\u0648 \u062a\u0648\u062c\u064a\u0647 \u0623\u0633\u0644\u0627\u0643 \u0627\u0644\u0645\u0634\u0631\u0648\u0639<\/td>\n<\/tr>\n<tr>\n<td>\u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u0645\u0644\u0641<\/td>\n<td>\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u062a\u0648\u0635\u064a\u0644 \u0645\u0644\u0641 \u062c\u0627\u0646\u0628 \u0627\u0644\u062a\u062d\u0643\u0645<\/td>\n<td>\u0642\u0637\u0628\u064a\u0629 \u062d\u0645\u0644 \u0627\u0644\u0645\u0644\u0627\u0645\u0633 \u0627\u0644\u0631\u0626\u064a\u0633\u064a<\/td>\n<\/tr>\n<tr>\n<td>\u062c\u0647\u062f \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0648\u0627\u0644\u062a\u0628\u0627\u0631<\/td>\n<td>\u0646\u0642\u0637\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0627\u0644\u0645\u0642\u0635\u0648\u062f\u0629<\/td>\n<td>\u062a\u0628\u062f\u064a\u0644 \u0627\u0644\u062e\u062f\u0645\u0629 \u0623\u0648 \u0627\u0644\u0645\u0648\u0627\u0641\u0642\u0629 \u0639\u0644\u0649 \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629<\/td>\n<\/tr>\n<tr>\n<td>\u0633\u062c\u0644 \u0627\u0644\u0645\u0646\u062a\u062c<\/td>\n<td>\u0627\u0644\u0645\u0633\u062a\u0646\u062f \u0642\u064a\u062f \u0627\u0644\u0645\u0631\u0627\u062c\u0639\u0629<\/td>\n<td>\u0628\u062f\u064a\u0644 \u0644\u0644\u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u0645\u062d\u062f\u062f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0631\u0624\u064a\u0629 \u0623\u0648\u0633\u0639 \u0644\u0644\u062a\u0637\u0628\u064a\u0642\u060c \u0641\u0625\u0646 (CHAC) <a href=\"https:\/\/chac-electric.com\/ar\/%d8%a7%d9%84%d8%a3%d8%ac%d9%87%d8%b2%d8%a9-%d8%a7%d9%84%d9%83%d9%87%d8%b1%d8%a8%d8%a7%d8%a6%d9%8a%d8%a9-%d9%84%d9%84%d8%aa%d8%ad%d9%83%d9%85-%d8%a7%d9%84%d8%b5%d9%86%d8%a7%d8%b9%d9%8a\/\">\u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0644\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0635\u0646\u0627\u0639\u064a<\/a> \u062a\u0639\u062a\u0628\u0631 \u0627\u0644\u0635\u0641\u062d\u0629 \u0646\u0642\u0637\u0629 \u0627\u0644\u0628\u062f\u0627\u064a\u0629 \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629 \u0644\u062e\u0637 \u0627\u0644\u0645\u0646\u062a\u062c\u0627\u062a. \u0623\u0645\u0627 \u0627\u0644\u0633\u0624\u0627\u0644 \u0627\u0644\u0623\u0636\u064a\u0642 \u0646\u0637\u0627\u0642\u0627\u064b \u0647\u0646\u0627 \u0641\u0647\u0648 \u0643\u064a\u0641 \u064a\u0645\u0643\u0646 \u062c\u0639\u0644 \u0637\u0644\u0628 \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0645\u0642\u0631\u0648\u0621\u0627\u064b \u0644\u0644\u0634\u062e\u0635 \u0627\u0644\u0630\u064a \u064a\u0642\u0631\u0623 \u0637\u0644\u0628 \u062a\u0642\u062f\u064a\u0645 \u0627\u0644\u0639\u0631\u0648\u0636.<\/p>\n<h2 id=\"part-2-read-the-product-record-without-inferring-terminal-behaviour\">\u0627\u0644\u062c\u0632\u0621 2. \u0642\u0631\u0627\u0621\u0629 \u0633\u062c\u0644 \u0627\u0644\u0645\u0646\u062a\u062c \u062f\u0648\u0646 \u0627\u0633\u062a\u0646\u062a\u064e\u0627\u062c \u0633\u0644\u0648\u0643 \u0627\u0644\u0645\u062d\u0637\u0629 \u0627\u0644\u0637\u0631\u0641\u064a\u0629<\/h2>\n<p>\u0628\u062e\u0644\u0627\u0641 \u062a\u0633\u0645\u064a\u0629 \u201c\u0645\u0648\u0635\u0644 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631\u201d \u0627\u0644\u0639\u0627\u0645\u0629\u060c \u064a\u0645\u0643\u0646 \u0644\u0633\u062c\u0644 \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u0645\u0646\u0634\u0648\u0631 \u0623\u0646 \u064a\u0635\u0641 \u0645\u064a\u0632\u0629 \u0645\u0639\u064a\u0646\u0629 \u0644\u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u062d\u0645\u0644 \u0623\u0648 \u064a\u062d\u062f\u062f \u062d\u0627\u0644\u0627\u062a \u062a\u0646\u062a\u0645\u064a \u0641\u0642\u0637 \u0625\u0644\u0649 \u0625\u062f\u062e\u0627\u0644\u0627\u062a \u0645\u062d\u062f\u062f\u0629. \u064a\u062c\u0628 \u0646\u0633\u062e \u062a\u0644\u0643 \u0627\u0644\u0635\u064a\u0627\u063a\u0629 \u0641\u064a \u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 \u0643\u0645\u0631\u062c\u0639 \u0645\u0633\u062a\u0646\u062f\u064a\u060c \u0648\u0644\u064a\u0633 \u0625\u0639\u0627\u062f\u0629 \u0635\u064a\u0627\u063a\u062a\u0647\u0627 \u0643\u062a\u0639\u0644\u064a\u0645\u0627\u062a \u0639\u0627\u0645\u0629 \u062d\u0648\u0644 \u0627\u062a\u062c\u0627\u0647 \u0627\u0644\u0623\u0637\u0631\u0627\u0641.<\/p>\n<p>\u0627\u0637\u0644\u0628 \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u0627\u0644\u062f\u0642\u064a\u0642\u0629 \u0648\u0627\u0644\u062a\u0643\u0648\u064a\u0646 \u0648\u0627\u0644\u0645\u0631\u0627\u062c\u0639\u0629 \u0627\u0644\u062a\u064a \u064a\u0631\u064a\u062f \u0627\u0644\u0645\u0634\u062a\u0631\u064a \u0645\u0631\u0627\u062c\u0639\u062a\u0647\u0627. \u0644\u0627 \u064a\u0635\u0628\u062d \u0628\u064a\u0627\u0646 \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0630\u0648 \u0645\u0639\u0646\u0649 \u0625\u0644\u0627 \u0639\u0646\u062f\u0645\u0627 \u064a\u0628\u0642\u0649 \u0627\u0644\u0645\u0633\u062a\u0646\u062f\u060c \u0648\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u062d\u0645\u0644\u060c \u0648\u062e\u064a\u0627\u0631 \u0627\u0644\u0645\u0648\u0635\u0644 \u0627\u0644\u0645\u062d\u062f\u062f \u0645\u0639\u064b\u0627.<\/p>\n<blockquote><p><strong>\u0645\u0647\u0645:<\/strong> \u0635\u0641\u062d\u0629 \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0644\u0627 \u062a\u0639\u062f \u0645\u0648\u0627\u0641\u0642\u0629 \u0639\u0644\u0649 \u0627\u0644\u062f\u0627\u0626\u0631\u0629. <a href=\"https:\/\/schaltbau.com\/en\/industry-insights\/5-criteria-to-consider-when-selecting-a-dc-contactor\/\" rel=\"nofollow noopener\" target=\"_blank\">\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0648\u0635\u0644\u0627\u062a \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631 \u0645\u0646 \u0634\u0627\u0644\u062a \u0628\u0627\u0648<\/a> \u0627\u0644\u0634\u062f\u062f \u0639\u0644\u0649 \u0636\u0631\u0648\u0631\u0629 \u0645\u0631\u0627\u0639\u0627\u0629 \u0638\u0631\u0648\u0641 \u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0627\u0644\u0641\u0639\u0644\u064a\u0629 \u0639\u0646\u062f \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0642\u0644\u0627\u0645 (\u0623\u0648: \u0627\u0644\u0645\u0644\u0627\u0645\u0633 \/ \u0627\u0644\u0643\u0648\u0646\u062a\u0627\u0643\u062a\u0648\u0631).<\/p><\/blockquote>\n<p>\u0647\u0630\u0627 \u0627\u0644\u062d\u062f \u064a\u0641\u0635\u0644 \u0623\u064a\u0636\u0627\u064b \u0647\u0630\u0627 \u0627\u0644\u0645\u0648\u0636\u0648\u0639 \u0639\u0646 <a href=\"https:\/\/chac-electric.com\/ar\/blog\/high-voltage-dc-contactor-ev-charging-selection\/\">\u0637\u0644\u0628 \u0639\u0631\u0648\u0636 \u0623\u0633\u0639\u0627\u0631 \u0644\u0645\u0642\u0627\u0648\u0644\u0627\u062a \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631 \u0644\u0634\u062d\u0646 \u0627\u0644\u0633\u064a\u0627\u0631\u0627\u062a \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629<\/a>, \u060c \u0648\u0627\u0644\u062a\u064a \u062a\u062a\u0646\u0627\u0648\u0644 \u0645\u062c\u0645\u0648\u0639\u0629 \u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0623\u0648\u0633\u0639. \u062d\u0642\u0644 \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0647\u0648 \u0623\u062d\u062f \u0645\u062f\u062e\u0644\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0645\u0633\u062a\u0646\u062f\u0627\u062a\u060c \u0648\u0644\u064a\u0633 \u0646\u062a\u064a\u062c\u0629 \u0627\u062e\u062a\u064a\u0627\u0631 \u0643\u0627\u0645\u0644\u0629.<\/p>\n<h2 id=\"part-3-build-the-circuit-context-around-the-polarity-field\">\u0627\u0644\u062c\u0632\u0621 3. \u0628\u0646\u0627\u0621 \u0633\u064a\u0627\u0642 \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u062d\u0648\u0644 \u062d\u0642\u0644 \u0627\u0644\u0642\u0637\u0628\u064a\u0629<\/h2>\n<p>\u0642\u0628\u0644 \u0645\u0631\u0627\u062c\u0639\u0629 \u0625\u062f\u062e\u0627\u0644 \u0627\u0644\u0642\u0637\u0628\u064a\u0629\u060c \u0635\u0641 \u0645\u0627 \u064a\u064f\u062a\u0648\u0642\u0639 \u0645\u0646 \u0627\u0644\u0645\u0644\u0627\u0645\u0633 (\u0627\u0644\u0643\u0648\u0646\u062a\u0627\u0643\u062a\u0648\u0631) \u0627\u0644\u0642\u064a\u0627\u0645 \u0628\u0647 \u0641\u064a \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629. \u064a\u0636\u0639 \u0625\u0631\u0634\u0627\u062f \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0631\u0627\u0631\u0627\u064b \u0648\u062a\u0643\u0631\u0627\u0631\u0627\u064b \u062c\u0647\u062f \u0627\u0644\u062a\u0634\u063a\u064a\u0644\u060c \u0648\u0627\u0644\u062a\u064a\u0627\u0631\u060c \u0648\u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0628\u062c\u0627\u0646\u0628 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0643\u0648\u0646 \u0644\u0623\u0646 \u062a\u0644\u0643 \u0627\u0644\u0645\u062f\u062e\u0644\u0627\u062a \u062a\u063a\u064a\u0631 \u0645\u0639\u0646\u0649 \u0627\u0644\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u0627\u0633\u0645\u064a.<\/p>\n<p>\u0627\u0633\u062a\u062e\u062f\u0645 \u0643\u062a\u0644\u0629 \u0633\u064a\u0627\u0642 \u0645\u062f\u0645\u062c\u0629 \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0633\u0631\u062f \u0637\u0648\u064a\u0644:<\/p>\n<ul>\n<li>\u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0648\u0638\u064a\u0641\u0629 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631 \u0627\u0644\u0645\u064f\u0628\u062f\u0651\u064e\u0644\u061b;<\/li>\n<li>\u062c\u0647\u062f \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0648\u0627\u0644\u062a\u062d\u064a\u0627\u0631 \u0639\u0646\u062f \u0646\u0642\u0637\u0629 \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0645\u0642\u0635\u0648\u062f\u0629\u061b;<\/li>\n<li>\u0628\u064a\u0627\u0646 \u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u062d\u0645\u0644 \u0648\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u0645\u0644\u0641 \u0627\u0644\u0645\u0646\u0641\u0635\u0644\u061b;<\/li>\n<li>\u0639\u062f\u062f \u0627\u0644\u0623\u0642\u0637\u0627\u0628\u060c \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0648\u062b\u064a\u0642\u0629 \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u062a\u062a\u0637\u0644\u0628 \u0630\u0644\u0643\u061b;<\/li>\n<li>\u062a\u0628\u062f\u064a\u0644 \u0627\u0644\u0648\u0627\u062c\u0628 \u0623\u0648 \u0648\u0635\u0641 \u0627\u0644\u0648\u0627\u062c\u0628\u061b \u0648<\/li>\n<li>\u0631\u0633\u0645\u060c \u0623\u0648 \u0633\u062c\u0644 \u0623\u0633\u0644\u0627\u0643\u060c \u0623\u0648 \u0645\u0631\u062c\u0639 \u0648\u062b\u064a\u0642\u0629 \u0645\u0646\u062a\u062c \u0645\u0633\u062a\u062e\u062f\u0645 \u0644\u0644\u0645\u0631\u0627\u062c\u0639\u0629.<\/li>\n<\/ul>\n<p>\u0645\u0627\u062f\u0629 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629 \u0645\u0646 <a href=\"https:\/\/www.hotsoninternational.com\/5-tips-to-choose-suitable-dc-contactor\/\" rel=\"nofollow noopener\" target=\"_blank\">\u0647\u0648\u062a\u0633\u0648\u0646<\/a> \u0648\u0628\u0627\u0644\u0645\u062b\u0644\u060c \u0641\u0647\u0648 \u064a\u062c\u0645\u0639 \u0645\u062f\u062e\u0644\u0627\u062a \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u060c \u0648\u0627\u0644\u062c\u0647\u062f\u060c \u0648\u0627\u0644\u062a\u064a\u0627\u0631 \u0645\u0639\u0627\u064b. \u0648\u0647\u0648 \u0644\u0627 \u064a\u062d\u0648\u0644 \u0642\u0627\u0639\u062f\u0629 \u0639\u0627\u0645\u0629 \u0625\u0644\u0649 \u062a\u0639\u0644\u064a\u0645\u0627\u062a \u062a\u0648\u0635\u064a\u0644\u060c \u0648\u0647\u0648 \u0645\u0627 \u064a\u062d\u0627\u0641\u0638 \u0639\u0644\u064a\u0647 \u0647\u0630\u0627 \u0627\u0644\u062a\u0646\u0633\u064a\u0642 \u0644\u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 (RFQ).<\/p>\n<h2 id=\"part-4-turn-polarity-into-a-reviewable-rfq-line\">\u0627\u0644\u062c\u0632\u0621 4. \u062a\u062d\u0648\u064a\u0644 \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0625\u0644\u0649 \u0628\u0646\u062f \u0637\u0644\u0628 \u0639\u0631\u0636 \u0633\u0639\u0631 (RFQ) \u0642\u0627\u0628\u0644 \u0644\u0644\u0645\u0631\u0627\u062c\u0639\u0629<\/h2>\n<p>\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0641\u0631\u0642 \u0627\u0644\u0645\u0634\u062a\u0631\u064a\u0627\u062a\u060c \u0644\u0627 \u064a\u062a\u0645\u062b\u0644 \u0627\u0644\u062a\u062d\u0633\u064a\u0646 \u0627\u0644\u0639\u0645\u0644\u064a \u0641\u064a \u0625\u0631\u0633\u0627\u0644 \u0628\u0631\u064a\u062f \u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a \u0623\u0637\u0648\u0644\u060c \u0628\u0644 \u0641\u064a \u0637\u0644\u0628 \u0628\u0646\u062f \u0628\u0646\u062f \u064a\u0645\u0643\u0646 \u062a\u062a\u0628\u0639 \u0643\u0644 \u062d\u0642\u0644 \u0641\u064a\u0647 \u0648\u0635\u0648\u0644\u0627\u064b \u0625\u0644\u0649 \u0627\u0644\u062f\u0627\u0631\u0629 \u0648\u0633\u062c\u0644 \u0627\u0644\u0645\u0646\u062a\u062c.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0623\u0631\u0633\u0644 \u0645\u0639 \u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631<\/th>\n<th>\u0644\u0645\u0627\u0630\u0627 \u064a\u062d\u062a\u0627\u062c \u0625\u0644\u064a\u0647 \u0627\u0644\u0645\u0631\u0627\u062c\u0639<\/th>\n<th>Example of a bounded entry<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0642\u0637\u0628\u064a\u0629 \u0627\u0644\u062d\u0645\u0644<\/td>\n<td>Identifies the requested load-side condition<\/td>\n<td>&#8220;Load-polarity requirement: confirm against named product record&#8221;<\/td>\n<\/tr>\n<tr>\n<td>Coil polarity and coil supply<\/td>\n<td>Keeps control information separate<\/td>\n<td>&#8220;Coil requirement: state separately from load field&#8221;<\/td>\n<\/tr>\n<tr>\n<td>Working voltage \/ current<\/td>\n<td>Establishes the intended operating point<\/td>\n<td>&#8220;State values from the circuit documentation&#8221;<\/td>\n<\/tr>\n<tr>\n<td>Application and duty<\/td>\n<td>Gives the contactor-use context<\/td>\n<td>&#8220;Describe the switching function and duty&#8221;<\/td>\n<\/tr>\n<tr>\n<td>Product record and configuration<\/td>\n<td>Prevents a series-level assumption<\/td>\n<td>&#8220;Attach selected product page or data record&#8221;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The phrase &#8220;confirm against named product record&#8221; deliberately avoids a promise about connection direction. It makes the vendor response auditable: a reviewer can see which information was supplied and which document must answer the configuration question.<\/p>\n<p>Buyers working with a pre-charge path should keep its separate operating question in view; the related <a href=\"https:\/\/chac-electric.com\/ar\/blog\/ev-high-voltage-dc-contactor-precharge-rfq\/\">pre-charge RFQ article<\/a> is useful for that context. It should not be used to fill in missing polarity information for a different circuit.<\/p>\n<h2 id=\"part-5-where-the-ste2-product-page-fits-the-record\">\u0627\u0644\u062c\u0632\u0621 5. \u0623\u064a\u0646 \u062a\u0642\u0639 \u0635\u0641\u062d\u0629 \u0645\u0646\u062a\u062c STE2 \u0641\u064a \u0627\u0644\u0633\u062c\u0644<\/h2>\n<p>CHAC&#8217;s <a href=\"https:\/\/chac-electric.com\/ar\/product\/ste2-series-high-voltage-dc-contactor-round-epoxy-sealing\/\">STE2 high-voltage DC contactor product record<\/a> is useful when the buyer needs a named series page to attach to a review. The page lists a 12\u20131500 VDC range and a 50\u2013800 A range; it also presents non-polarized load support for specified entries.<\/p>\n<figure style=\"margin: 26px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 640px; width: 100%; height: auto; display: block; margin: 0 auto; border-radius: 8px;\" src=\"https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/08\/STE2-Series-High-voltage-DC-contactor-1.webp\" alt=\"STE2 DC contactor product record for a scoped RFQ review\" \/><\/figure>\n<p>That is a documentation benefit, not a project selection claim. The buyer should still identify the requested configuration, circuit data, and application before asking whether the published statement applies to the intended use.<\/p>\n<p>If an OEM needs product adaptation discussions after that document review, the <a href=\"https:\/\/chac-electric.com\/ar\/%d8%aa%d8%ae%d8%b5%d9%8a%d8%b5-%d8%a7%d9%84%d8%aa%d8%ad%d9%83%d9%85-%d8%a7%d9%84%d8%b5%d9%86%d8%a7%d8%b9%d9%8a\/\">\u0645\u0633\u0627\u0631 \u062a\u062e\u0635\u064a\u0635 \u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0635\u0646\u0627\u0639\u064a<\/a> provides the relevant route. A quote request is more useful when it carries the actual circuit and product-record inputs rather than a single polarity word.<\/p>\n<blockquote>\n<h5>\u062a\u0648\u0635\u064a\u0629 \u0628\u0627\u0644\u0645\u0646\u062a\u062c<\/h5>\n<h5><a href=\"https:\/\/chac-electric.com\/ar\/product\/ste2-series-high-voltage-dc-contactor-round-epoxy-sealing\/\">STE2 Series High-voltage DC contactor (Round Epoxy Sealing) &#8211; CHAC Electric<\/a><\/h5>\n<p><img decoding=\"async\" src=\"https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/08\/STE2-Series-High-voltage-DC-contactor.1-600x600.webp\" alt=\"\u0645\u0648\u0644\u0627\u0645\u064a\u0644 \u062a\u064a\u0627\u0631 \u0645\u0633\u062a\u0645\u0631 \u0639\u0627\u0644\u064a \u0627\u0644\u062c\u0647\u062f \u0645\u0646 \u0633\u0644\u0633\u0644\u0629 STE2 (\u062e\u062a\u0645 \u0625\u064a\u0628\u0648\u0643\u0633\u064a \u062f\u0627\u0626\u0631\u064a)\" \/><\/p><\/blockquote>\n<h2 id=\"part-6-keep-the-selection-result-inside-its-evidence-boundary\">\u0627\u0644\u062c\u0632\u0621 6. \u062d\u0627\u0641\u0638 \u0639\u0644\u0649 \u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u062a\u062d\u062f\u064a\u062f \u062f\u0627\u062e\u0644 \u062d\u062f\u0648\u062f \u0627\u0644\u0623\u062f\u0644\u0629 \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0647\u0627<\/h2>\n<p>For the final review, keep polarity as a field to be defined and checked rather than a shortcut to an installation decision. A buyer can request a response against the selected product document, but the resulting reply should not be read as an approval of a terminal arrangement, switching performance, or project design.<\/p>\n<p>When the record is complete, send the scope to CHAC through the <a href=\"https:\/\/chac-electric.com\/ar\/%d8%a7%d8%aa%d8%b5%d9%84-%d8%a8%d9%86%d8%a7\/\">contact page<\/a> with the product reference and circuit information. When it is incomplete, ask for the missing record first; guessing from a photograph, a series name, or a generic polarity discussion adds ambiguity rather than removing it.<\/p>\n<h2 id=\"frequently-asked-questions-dc-contactor-polarity\">Frequently Asked Questions: DC Contactor Polarity<\/h2>\n<h3>Does DC contactor load polarity matter?<\/h3>\n<p>It can matter to the selected product and circuit, so the RFQ should state the load-polarity requirement rather than assume it from a general DC label. The named product record is the place to review how that requirement is described.<\/p>\n<h3>Is load polarity the same as coil polarity?<\/h3>\n<p>No. Load polarity refers to the main switched path, while coil polarity concerns the control-side coil connection. Keep them in separate RFQ fields so the reviewer does not need to infer one from the other.<\/p>\n<h3>Which details belong beside a polarity request?<\/h3>\n<p>Provide the intended application, working voltage, working current, duty description, requested product configuration, and the circuit or product document used for review. Those details make a polarity request actionable.<\/p>\n<h3>Does a non-polarized load statement apply to every contactor?<\/h3>\n<p>No. Treat that wording as a scoped product-record statement. Confirm the selected series entry and configuration instead of extending it to every contactor or every project.<\/p>\n<h3>Can a product page replace a circuit drawing review?<\/h3>\n<p>No. A product page can identify published features and ranges, but it does not show the buyer&#8217;s circuit conditions or approve a connection arrangement. Keep the relevant circuit record with the RFQ.<\/p>\n<h3>What information should be sent for a quote review?<\/h3>\n<p>Send the requested load-polarity and coil-polarity fields, the working voltage and current, application and duty description, product reference, configuration, and available circuit documentation. That gives the reviewer a bounded set of inputs to assess.<\/p>\n<h2 id=\"references\">\u0627\u0644\u0645\u0631\u0627\u062c\u0639<\/h2>\n<ul>\n<li><a href=\"https:\/\/schaltbau.com\/en\/industry-insights\/5-criteria-to-consider-when-selecting-a-dc-contactor\/\" rel=\"nofollow noopener\" target=\"_blank\">Schaltbau: Five criteria to consider when selecting a DC contactor<\/a><\/li>\n<li><a href=\"https:\/\/viox.com\/how-to-choose-a-dc-contactor\/\" rel=\"nofollow noopener\" target=\"_blank\">VIOX: How to choose a DC contactor<\/a><\/li>\n<li><a href=\"https:\/\/www.hotsoninternational.com\/5-tips-to-choose-suitable-dc-contactor\/\" rel=\"nofollow noopener\" target=\"_blank\">HOTSON: Five tips to choose a suitable DC contactor<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>A DC contactor RFQ becomes easier to review when it names load polarity and coil polarity separately. Add the working voltage, current, application, switching duty, and the exact product record alongside those fields; otherwise a reply can look complete while still leaving the circuit question unanswered. Contents Part 1. Separate the two polarity questions before [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":3685,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3646","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":7}},"acf":[],"_links":{"self":[{"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/posts\/3646","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/comments?post=3646"}],"version-history":[{"count":2,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/posts\/3646\/revisions"}],"predecessor-version":[{"id":3686,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/posts\/3646\/revisions\/3686"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/media\/3685"}],"wp:attachment":[{"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/media?parent=3646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/categories?post=3646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/tags?post=3646"}],"curies":[{"name":"\u0644\u0639\u0628 \u062c\u064a\u062f\u0629","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}