{"id":1467,"date":"2026-10-16T01:00:00","date_gmt":"2026-10-16T01:00:00","guid":{"rendered":"https:\/\/mordio.com\/?p=1467"},"modified":"2026-07-17T09:22:20","modified_gmt":"2026-07-17T09:22:20","slug":"switch-current-ratings-derating-curves-ambient-temperature","status":"publish","type":"post","link":"https:\/\/mordio.com\/ar\/switch-current-ratings-derating-curves-ambient-temperature\/","title":{"rendered":"\u062a\u0635\u0646\u064a\u0641\u0627\u062a \u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0641\u0627\u062a\u064a\u062d 10 \u0623\u0645\u0628\u064a\u0631 \u0645\u0642\u0627\u0628\u0644 16 \u0623\u0645\u0628\u064a\u0631 \u0645\u0642\u0627\u0628\u0644 20 \u0623\u0645\u0628\u064a\u0631: \u0645\u0646\u062d\u0646\u064a\u0627\u062a \u0627\u0644\u062a\u062e\u0641\u064a\u0636 \u0644\u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u062d\u064a\u0637\u0629 \u0648\u0627\u0644\u062a\u0631\u0643\u064a\u0628\u0627\u062a \u0627\u0644\u0645\u063a\u0644\u0642\u0629"},"content":{"rendered":"<h2>\u0641\u0647\u0645 \u062a\u0635\u0646\u064a\u0641\u0627\u062a \u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0641\u0627\u062a\u064a\u062d \u0648\u0627\u0644\u062a\u062e\u0641\u064a\u0636<\/h2>\n<p>\u0639\u0646\u062f \u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0641\u0627\u062a\u064a\u062d \u0627\u0644\u062d\u0627\u0626\u0637 \u0644\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629 \u0623\u0648 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629\u060c \u0641\u0625\u0646 \u0627\u0644\u062a\u0635\u0646\u064a\u0641 \u0627\u0644\u0627\u0633\u0645\u064a \u0644\u0644\u062a\u064a\u0627\u0631 - 10 \u0623\u0645\u0628\u064a\u0631 \u0623\u0648 16 \u0623\u0645\u0628\u064a\u0631 \u0623\u0648 20 \u0623\u0645\u0628\u064a\u0631 - \u0647\u0648 \u062c\u0632\u0621 \u0641\u0642\u0637 \u0645\u0646 \u0627\u0644\u0642\u0635\u0629. \u062a\u0639\u062a\u0645\u062f \u0627\u0644\u0633\u0639\u0629 \u0627\u0644\u0641\u0639\u0644\u064a\u0629 \u0644\u062a\u062d\u0645\u0644 \u0627\u0644\u062a\u064a\u0627\u0631 \u0644\u0644\u0645\u0641\u062a\u0627\u062d \u0639\u0644\u0649 \u0638\u0631\u0648\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644\u060c \u062e\u0627\u0635\u0629 \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u062d\u064a\u0637\u0629 \u0648\u0643\u064a\u0641\u064a\u0629 \u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u0645\u0641\u062a\u0627\u062d. \u062a\u0648\u0641\u0631 \u0645\u0646\u062d\u0646\u064a\u0627\u062a \u0627\u0644\u062a\u062e\u0641\u064a\u0636\u060c \u0627\u0644\u0645\u062d\u062f\u062f\u0629 \u0641\u064a \u0645\u0639\u0627\u064a\u064a\u0631 \u0645\u062b\u0644 IEC 60669-1 \u0648BS 1363\u060c \u0627\u0644\u0623\u0633\u0627\u0633 \u0627\u0644\u0647\u0646\u062f\u0633\u064a \u0644\u0636\u0628\u0637 \u0627\u0644\u062a\u0635\u0646\u064a\u0641\u0627\u062a \u0644\u0636\u0645\u0627\u0646 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0622\u0645\u0646. \u062a\u0634\u0631\u062d \u0647\u0630\u0647 \u0627\u0644\u0645\u0642\u0627\u0644\u0629 \u0645\u0628\u0627\u062f\u0626 \u0627\u0644\u062a\u062e\u0641\u064a\u0636 \u0644\u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u062d\u064a\u0637\u0629 \u0648\u0627\u0644\u062a\u0631\u0643\u064a\u0628\u0627\u062a \u0627\u0644\u0645\u063a\u0644\u0642\u0629\u060c \u0645\u0645\u0627 \u064a\u0633\u0627\u0639\u062f\u0643 \u0639\u0644\u0649 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0627\u0644\u0645\u0646\u0627\u0633\u0628 \u0644\u0645\u0634\u0631\u0648\u0639\u0643.<\/p>\n<h2>\u0627\u0644\u062a\u0635\u0646\u064a\u0641\u0627\u062a \u0627\u0644\u0627\u0633\u0645\u064a\u0629 \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u0648\u0627\u0642\u0639\u064a\u0629<\/h2>\n<p>\u064a\u0645\u0643\u0646 \u0644\u0644\u0645\u0641\u062a\u0627\u062d \u0627\u0644\u0645\u0635\u0646\u0641 10 \u0623\u0645\u0628\u064a\u0631 \u0639\u0646\u062f \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0645\u062d\u064a\u0637\u0629 25 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0623\u0646 \u064a\u062d\u0645\u0644 10 \u0623\u0645\u0628\u064a\u0631 \u0628\u0634\u0643\u0644 \u0645\u0633\u062a\u0645\u0631 \u0641\u0642\u0637 \u062a\u062d\u062a \u062a\u0644\u0643 \u0627\u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u0645\u062b\u0627\u0644\u064a\u0629. \u0645\u0639 \u0627\u0631\u062a\u0641\u0627\u0639 \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629\u060c \u062a\u0632\u062f\u0627\u062f \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 \u0644\u0644\u0645\u0644\u0627\u0645\u0633\u0627\u062a \u0648\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u0629. \u0625\u0630\u0627 \u062a\u0645 \u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u0645\u0641\u062a\u0627\u062d \u0641\u064a \u0635\u0646\u062f\u0648\u0642 \u0645\u062a\u0639\u062f\u062f \u0627\u0644\u0641\u062a\u062d\u0627\u062a \u0623\u0648 \u0635\u0646\u062f\u0648\u0642 \u062e\u0644\u0641\u064a \u0636\u0639\u064a\u0641 \u0627\u0644\u062a\u0647\u0648\u064a\u0629\u060c \u064a\u0642\u0644 \u062a\u0628\u062f\u064a\u062f \u0627\u0644\u062d\u0631\u0627\u0631\u0629\u060c \u0645\u0645\u0627 \u064a\u0631\u0641\u0639 \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u0629 \u0623\u0643\u062b\u0631. \u062a\u0638\u0647\u0631 \u0645\u0646\u062d\u0646\u064a\u0627\u062a \u0627\u0644\u062a\u062e\u0641\u064a\u0636 \u0627\u0644\u0645\u0646\u0634\u0648\u0631\u0629 \u0645\u0646 \u0642\u0628\u0644 \u0627\u0644\u0634\u0631\u0643\u0627\u062a \u0627\u0644\u0645\u0635\u0646\u0639\u0629 (\u0623\u0648 \u0627\u0644\u0645\u0633\u062a\u0645\u062f\u0629 \u0645\u0646 \u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629) \u0623\u0642\u0635\u0649 \u062a\u064a\u0627\u0631 \u0645\u0633\u0645\u0648\u062d \u0628\u0647 \u0643\u062f\u0627\u0644\u0629 \u0644\u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u062d\u064a\u0637\u0629. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0642\u062f \u064a\u062a\u0645 \u062a\u062e\u0641\u064a\u0636 \u0645\u0641\u062a\u0627\u062d 16 \u0623\u0645\u0628\u064a\u0631 \u0625\u0644\u0649 14 \u0623\u0645\u0628\u064a\u0631 \u0639\u0646\u062f \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0645\u062d\u064a\u0637\u0629 40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629\u060c \u0648\u0625\u0644\u0649 12 \u0623\u0645\u0628\u064a\u0631 \u0639\u0646\u062f 50 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629. \u0647\u0630\u0647 \u0627\u0644\u0645\u0646\u062d\u0646\u064a\u0627\u062a \u0636\u0631\u0648\u0631\u064a\u0629 \u0644\u0644\u0645\u0647\u0646\u062f\u0633\u064a\u0646 \u0627\u0644\u0630\u064a\u0646 \u064a\u0635\u0645\u0645\u0648\u0646 \u062f\u0648\u0627\u0626\u0631 \u064a\u062c\u0628 \u0623\u0646 \u062a\u0639\u0645\u0644 \u0628\u0634\u0643\u0644 \u0645\u0648\u062b\u0648\u0642 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u062f\u0627\u0641\u0626\u0629.<\/p>\n<h2>\u0627\u0644\u062a\u062e\u0641\u064a\u0636 \u0644\u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u062d\u064a\u0637\u0629: \u0627\u0644\u0623\u0633\u0627\u0633 \u0627\u0644\u0647\u0646\u062f\u0633\u064a<\/h2>\n<p>The fundamental limit is the maximum allowable temperature of switch contacts and insulating materials. For switches complying with IEC 60669-1, the temperature rise at rated current should not exceed 45 K above ambient for terminals and 55 K for other parts. When ambient is higher than the reference (typically 25\u00b0C or 35\u00b0C), the allowable temperature rise decreases, so the current must be reduced. The derating factor is often given as a percentage per degree above reference. For instance, a common derating factor for 10A switches is 0.5% per \u00b0C above 35\u00b0C. That means at 45\u00b0C, the switch can carry only 95% of its rated current (9.5A). At 55\u00b0C, it drops to 90% (9A). Always consult the manufacturer&#8217;s data\u2014MORDIO provides derating information for each switch model in its technical datasheets.<\/p>\n<h2>\u0627\u0644\u062a\u0631\u0643\u064a\u0628\u0627\u062a \u0627\u0644\u0645\u063a\u0644\u0642\u0629: \u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0645\u0633\u0627\u062d\u0627\u062a \u0627\u0644\u0645\u062d\u0635\u0648\u0631\u0629<\/h2>\n<p>When a switch is installed in an enclosed backbox or a multi-gang plate, heat cannot escape easily. The switch&#8217;s own power dissipation (I\u00b2R losses) raises the internal temperature above ambient. Standards like BS 1363-2 require that switches be tested in a simulated enclosure to determine the actual current-carrying capacity. For example, a 20A switch mounted in a single-gang metal box may still carry 20A, but the same switch in a plastic multi-gang enclosure might be limited to 16A. Derating curves for enclosed installations show how many switches can be ganged together without exceeding temperature limits. As a rule of thumb, derate by 10% for each additional switch in the same faceplate, but always verify with the manufacturer&#8217;s data.<\/p>\n<h2>\u0645\u0642\u0627\u0631\u0646\u0629 \u0645\u0641\u0627\u062a\u064a\u062d 10 \u0623\u0645\u0628\u064a\u0631 \u064816 \u0623\u0645\u0628\u064a\u0631 \u064820 \u0623\u0645\u0628\u064a\u0631 \u062a\u062d\u062a \u0627\u0644\u062a\u062e\u0641\u064a\u0636<\/h2>\n<p>Let&#8217;s compare typical derating scenarios for MORDIO switches (always refer to actual datasheets):<\/p>\n<ul>\n<li>\u0645\u0641\u062a\u0627\u062d 10 \u0623\u0645\u0628\u064a\u0631 \u0639\u0646\u062f \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0645\u062d\u064a\u0637\u0629 25 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629\u060c \u0641\u062a\u062d\u0629 \u0648\u0627\u062d\u062f\u0629: 10 \u0623\u0645\u0628\u064a\u0631 \u0643\u0627\u0645\u0644\u0629. \u0639\u0646\u062f \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0645\u062d\u064a\u0637\u0629 50 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629: \u062d\u0648\u0627\u0644\u064a 8.5 \u0623\u0645\u0628\u064a\u0631 (\u062a\u062e\u0641\u064a\u0636 15%). \u0641\u064a \u063a\u0644\u0627\u0641 4 \u0641\u062a\u062d\u0627\u062a \u0639\u0646\u062f 35 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629: 8 \u0623\u0645\u0628\u064a\u0631 (\u062a\u062e\u0641\u064a\u0636 20%).<\/li>\n<li>\u0645\u0641\u062a\u0627\u062d 16 \u0623\u0645\u0628\u064a\u0631 \u0639\u0646\u062f 25 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629\u060c \u0641\u062a\u062d\u0629 \u0648\u0627\u062d\u062f\u0629: 16 \u0623\u0645\u0628\u064a\u0631. \u0639\u0646\u062f 50 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629: 13.6 \u0623\u0645\u0628\u064a\u0631 (\u062a\u062e\u0641\u064a\u0636 15%). \u0641\u064a \u063a\u0644\u0627\u0641 4 \u0641\u062a\u062d\u0627\u062a \u0639\u0646\u062f 35 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629: 12.8 \u0623\u0645\u0628\u064a\u0631 (\u062a\u062e\u0641\u064a\u0636 20%).<\/li>\n<li>\u0645\u0641\u062a\u0627\u062d 20 \u0623\u0645\u0628\u064a\u0631 \u0639\u0646\u062f 25 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629\u060c \u0641\u062a\u062d\u0629 \u0648\u0627\u062d\u062f\u0629: 20 \u0623\u0645\u0628\u064a\u0631. \u0639\u0646\u062f 50 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629: 17 \u0623\u0645\u0628\u064a\u0631 (\u062a\u062e\u0641\u064a\u0636 15%). \u0641\u064a \u063a\u0644\u0627\u0641 4 \u0641\u062a\u062d\u0627\u062a \u0639\u0646\u062f 35 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629: 16 \u0623\u0645\u0628\u064a\u0631 (\u062a\u062e\u0641\u064a\u0636 20%).<\/li>\n<\/ul>\n<p>\u062a\u0648\u0636\u062d \u0647\u0630\u0647 \u0627\u0644\u0623\u0645\u062b\u0644\u0629 \u0623\u0646 \u0627\u0644\u062a\u062e\u0641\u064a\u0636 \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0642\u0644\u0644 \u0628\u0634\u0643\u0644 \u0643\u0628\u064a\u0631 \u0645\u0646 \u0627\u0644\u0633\u0639\u0629 \u0627\u0644\u0641\u0639\u0627\u0644\u0629. \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u062f\u0648\u0627\u0626\u0631 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062d\u0645\u0644 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u062f\u0627\u0641\u0626\u0629 \u0623\u0648 \u0627\u0644\u0645\u0632\u062f\u062d\u0645\u0629\u060c \u0642\u062f \u064a\u0643\u0648\u0646 \u0627\u0644\u062a\u0635\u0646\u064a\u0641 \u0627\u0644\u0627\u0633\u0645\u064a \u0627\u0644\u0623\u0639\u0644\u0649 \u0636\u0631\u0648\u0631\u064a\u064b\u0627 \u0644\u062a\u0644\u0628\u064a\u0629 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0641\u0639\u0644\u064a\u0629 \u0628\u0639\u062f \u0627\u0644\u062a\u062e\u0641\u064a\u0636.<\/p>\n<h2>\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0648\u0627\u0644\u0627\u0645\u062a\u062b\u0627\u0644: BS 1363 \u0648IEC \u0648\u0627\u0644\u0645\u0632\u064a\u062f<\/h2>\n<p>\u062a\u0648\u0631\u062f MORDIO \u0627\u0644\u0645\u0641\u0627\u062a\u064a\u062d \u0648\u0627\u0644\u0645\u0642\u0627\u0628\u0633 \u0627\u0644\u062d\u0627\u0626\u0637\u064a\u0629 \u0644\u0623\u0633\u0648\u0627\u0642 \u0627\u0644\u0646\u0645\u0637 \u0627\u0644\u0628\u0631\u064a\u0637\u0627\u0646\u064a \u0648\u0627\u0644\u0623\u0648\u0631\u0648\u0628\u064a \u0648\u0627\u0644\u0623\u0645\u0631\u064a\u0643\u064a \u0648\u062a\u062f\u0639\u0645 \u0645\u0646\u0627\u0642\u0634\u0627\u062a \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0623\u0635\u0644\u064a \u0648\u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u062d\u0633\u0628 \u0627\u0644\u062a\u0635\u0645\u064a\u0645. \u064a\u062c\u0628 \u0639\u0644\u0649 \u0627\u0644\u0645\u0634\u062a\u0631\u064a\u0646 \u062a\u0623\u0643\u064a\u062f \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u062f\u0642\u064a\u0642\u0629 \u0648\u0627\u0644\u0634\u0647\u0627\u062f\u0627\u062a \u0627\u0644\u0645\u0637\u0628\u0642\u0629 \u0648\u0648\u062b\u0627\u0626\u0642 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0648\u0643\u0645\u064a\u0629 \u0627\u0644\u0637\u0644\u0628 \u0627\u0644\u062f\u0646\u064a\u0627 \u0648\u0645\u062f\u0629 \u0627\u0644\u062a\u0633\u0644\u064a\u0645 \u0644\u0643\u0644 \u0645\u0634\u0631\u0648\u0639 \u0645\u0639 \u0641\u0631\u064a\u0642 MORDIO \u0642\u0628\u0644 \u0627\u0644\u0637\u0644\u0628.<\/p>\n<h2>\u0625\u0631\u0634\u0627\u062f\u0627\u062a \u0639\u0645\u0644\u064a\u0629 \u0644\u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0641\u0627\u062a\u064a\u062d<\/h2>\n<p>\u0639\u0646\u062f \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0641\u0627\u062a\u064a\u062d \u0644\u0645\u0634\u0631\u0648\u0639 \u0645\u0627\u060c \u0627\u062a\u0628\u0639 \u0647\u0630\u0647 \u0627\u0644\u062e\u0637\u0648\u0627\u062a:<\/p>\n<ul>\n<li>\u062d\u062f\u062f \u0623\u0642\u0635\u0649 \u062a\u064a\u0627\u0631 \u062d\u0645\u0644 \u0645\u0633\u062a\u0645\u0631.<\/li>\n<li>\u0642\u062f\u0631 \u0623\u0633\u0648\u0623 \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0645\u062d\u064a\u0637\u0629 \u0641\u064a \u0628\u064a\u0626\u0629 \u0627\u0644\u062a\u0631\u0643\u064a\u0628 (\u0645\u062b\u0644 \u0628\u0627\u0644\u0642\u0631\u0628 \u0645\u0646 \u063a\u0644\u0627\u064a\u0629\u060c \u0641\u064a \u0645\u0648\u0642\u0639 \u0645\u0634\u0645\u0633).<\/li>\n<li>\u062d\u062f\u062f \u0646\u0648\u0639 \u0627\u0644\u063a\u0644\u0627\u0641: \u0641\u062a\u062d\u0629 \u0648\u0627\u062d\u062f\u0629\u060c \u0645\u062a\u0639\u062f\u062f \u0627\u0644\u0641\u062a\u062d\u0627\u062a\u060c \u0645\u0639\u062f\u0646\u064a\u060c \u0623\u0648 \u0628\u0644\u0627\u0633\u062a\u064a\u0643\u064a. \u0644\u0627\u062d\u0638 \u0639\u062f\u062f \u0627\u0644\u0645\u0641\u0627\u062a\u064a\u062d \u0627\u0644\u062a\u064a \u062a\u0634\u0627\u0631\u0643 \u0646\u0641\u0633 \u0627\u0644\u0644\u0648\u062d\u0629 \u0627\u0644\u0623\u0645\u0627\u0645\u064a\u0629.<\/li>\n<li>Apply the derating factors from the manufacturer&#8217;s data. If no data is available, use a 20% derating for multi-gang enclosures and a 15% derating for ambient temperatures above 35\u00b0C.<\/li>\n<li>\u0627\u062e\u062a\u0631 \u0645\u0641\u062a\u0627\u062d\u064b\u0627 \u062a\u062a\u062c\u0627\u0648\u0632 \u0633\u0639\u062a\u0647 \u0627\u0644\u0645\u062e\u0641\u0636\u0629 \u062a\u064a\u0627\u0631 \u0627\u0644\u062d\u0645\u0644. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u062d\u0645\u0644 14 \u0623\u0645\u0628\u064a\u0631 \u0648\u0627\u0644\u0633\u0639\u0629 \u0627\u0644\u0645\u062e\u0641\u0636\u0629 \u0644\u0645\u0641\u062a\u0627\u062d 16 \u0623\u0645\u0628\u064a\u0631 \u0647\u064a 12.8 \u0623\u0645\u0628\u064a\u0631\u060c \u0641\u0627\u062e\u062a\u0631 \u0645\u0641\u062a\u0627\u062d 20 \u0623\u0645\u0628\u064a\u0631 \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0630\u0644\u0643.<\/li>\n<\/ul>\n<p>\u0627\u062a\u0628\u0639 \u062f\u0627\u0626\u0645\u064b\u0627 \u0627\u0644\u0642\u0648\u0627\u0646\u064a\u0646 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0627\u0644\u0645\u062d\u0644\u064a\u0629 \u0648\u0627\u0633\u062a\u0634\u0631 \u0643\u0647\u0631\u0628\u0627\u0626\u064a\u064b\u0627 \u0645\u0624\u0647\u0644\u064b\u0627 \u0644\u0644\u062a\u0631\u0643\u064a\u0628. \u062a\u0642\u062f\u0645 MORDIO \u0645\u062c\u0645\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0645\u0641\u0627\u062a\u064a\u062d \u0645\u0646 10 \u0623\u0645\u0628\u064a\u0631 \u0625\u0644\u0649 20 \u0623\u0645\u0628\u064a\u0631\u060c \u0645\u0639 \u0628\u064a\u0627\u0646\u0627\u062a \u0641\u0646\u064a\u0629 \u0645\u0641\u0635\u0644\u0629 \u0645\u062a\u0627\u062d\u0629 \u0639\u0644\u0649 \u0635\u0641\u062d\u0627\u062a \u0645\u0646\u062a\u062c\u0627\u062a\u0646\u0627. \u0644\u0645\u0632\u064a\u062f \u0645\u0646 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a\u060c \u0642\u0645 \u0628\u0632\u064a\u0627\u0631\u0629 \u0645\u062c\u0645\u0648\u0639\u0629 \u0645\u0641\u0627\u062a\u064a\u062d \u0648\u0645\u0642\u0627\u0628\u0633 \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0628\u0631\u064a\u0637\u0627\u0646\u064a\u0629 \u0644\u062f\u064a\u0646\u0627 \u0623\u0648 \u0639\u0631\u0636 \u0634\u0647\u0627\u062f\u0627\u062a\u0646\u0627.<\/p>\n<h2>\u0627\u0644\u062e\u0644\u0627\u0635\u0629: \u0627\u0644\u062a\u062e\u0641\u064a\u0636 \u064a\u0636\u0645\u0646 \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0648\u0627\u0644\u0645\u0648\u062b\u0648\u0642\u064a\u0629<\/h2>\n<p>\u0644\u0645\u0632\u064a\u062f \u0645\u0646 \u0627\u0644\u0642\u0631\u0627\u0621\u0629\u060c \u0627\u0633\u062a\u0643\u0634\u0641 \u0645\u062c\u0645\u0648\u0639\u0629 \u0645\u0646\u062a\u062c\u0627\u062a\u0646\u0627 \u0648\u062a\u0639\u0631\u0641 \u0639\u0644\u0649 \u0627\u0644\u0645\u0632\u064a\u062f \u062d\u0648\u0644 \u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0644\u062f\u064a\u0646\u0627.<\/p>\n<p>\u0642\u0628\u0644 \u0627\u0644\u0645\u0648\u0627\u0641\u0642\u0629 \u0639\u0644\u0649 \u0627\u0644\u0637\u0644\u0628\u060c \u0642\u0645 \u0628\u062a\u062d\u0648\u064a\u0644 \u0627\u0644\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0645\u062a \u0645\u0646\u0627\u0642\u0634\u062a\u0647\u0627 \u0623\u0639\u0644\u0627\u0647 \u0625\u0644\u0649 \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0634\u0631\u0627\u0621 \u0645\u0643\u062a\u0648\u0628\u0629. \u0633\u062c\u0644 \u0627\u0644\u0633\u0648\u0642 \u0627\u0644\u0645\u0633\u062a\u0647\u062f\u0641\u060c \u0627\u0644\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u0645\u0637\u0628\u0642\u060c \u0627\u0644\u062c\u0647\u062f \u0648\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0642\u0646\u0646\u064a\u0646\u060c \u0627\u0644\u0645\u0648\u0627\u062f\u060c \u0627\u0644\u0623\u0628\u0639\u0627\u062f\u060c \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0623\u0637\u0631\u0627\u0641\u060c \u0627\u0644\u062a\u063a\u0644\u064a\u0641\u060c \u0648\u0636\u0639 \u0627\u0644\u0639\u0644\u0627\u0645\u0627\u062a\u060c \u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u0645\u0648\u0627\u0641\u0642\u0629 \u0639\u0644\u0649 \u0627\u0644\u0639\u064a\u0646\u0629\u060c \u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0641\u062d\u0635\u060c \u0648\u0627\u0644\u0645\u0633\u062a\u0646\u062f\u0627\u062a \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 \u0642\u0628\u0644 \u0627\u0644\u0634\u062d\u0646. \u0627\u0637\u0644\u0628 \u0645\u0646 \u0627\u0644\u0645\u0648\u0631\u062f \u062a\u062d\u062f\u064a\u062f \u0623\u064a \u0627\u0641\u062a\u0631\u0627\u0636\u0627\u062a \u0623\u0648 \u0627\u0633\u062a\u062b\u0646\u0627\u0621\u0627\u062a \u0643\u062a\u0627\u0628\u064a\u064b\u0627. \u0627\u062d\u062a\u0641\u0638 \u0628\u0639\u064a\u0646\u0629 \u0645\u0639\u062a\u0645\u062f\u0629 \u0648\u0631\u0633\u0645 \u0645\u0631\u0627\u062c\u0639\u0629 \u0648\u0645\u0636\u0628\u0648\u0637\u0629 \u0643\u0645\u0631\u062c\u0639 \u0644\u0644\u0625\u0646\u062a\u0627\u062c \u0648\u0627\u0644\u0641\u062d\u0635 \u0627\u0644\u0646\u0647\u0627\u0626\u064a. \u0644\u0627 \u062a\u062d\u0644 \u0647\u0630\u0647 \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0645\u062d\u0644 \u0627\u0644\u0634\u0647\u0627\u062f\u0629 \u0623\u0648 \u0627\u0644\u0645\u0631\u0627\u062c\u0639\u0629 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0627\u0644\u0645\u062d\u0644\u064a\u0629\u060c \u0648\u0644\u0643\u0646\u0647\u0627 \u062a\u0645\u0646\u062d \u0627\u0644\u0645\u0634\u062a\u0631\u064a\u0646 \u0648\u0627\u0644\u0645\u0648\u0631\u062f\u064a\u0646 \u0642\u0627\u0626\u0645\u0629 \u0645\u0631\u062c\u0639\u064a\u0629 \u0645\u0634\u062a\u0631\u0643\u0629 \u0648\u062a\u0642\u0644\u0644 \u0645\u0646 \u0633\u0648\u0621 \u0627\u0644\u0641\u0647\u0645 \u0627\u0644\u0630\u064a \u064a\u0645\u0643\u0646 \u062a\u062c\u0646\u0628\u0647 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0633\u0639\u064a\u0631\u060c \u0648\u0623\u062e\u0630 \u0627\u0644\u0639\u064a\u0646\u0627\u062a\u060c \u0648\u0627\u0644\u0625\u0646\u062a\u0627\u062c\u060c \u0648\u0627\u0644\u062a\u0633\u0644\u064a\u0645.<\/p>\n<p>Explore <a href=\"https:\/\/mordio.com\/ar\/\">MORDIO wall switch and socket solutions<\/a>, \u0623\u0648 <a href=\"https:\/\/mordio.com\/ar\/contact\/\">contact the team<\/a> to discuss specifications, samples, documentation, MOQ, and lead times for your market.<\/p>","protected":false},"excerpt":{"rendered":"<p>Understanding Switch Current Ratings and Derating When selecting wall switches for commercial or industrial applications, the nominal current rating\u201410A, 16A, or 20A\u2014is only part of the story. The actual current-carrying capacity of a switch depends on operating conditions, particularly ambient temperature and how the switch is installed. Derating curves, defined in standards such as IEC [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1116,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[1312,1453,1454,1452],"class_list":["post-1467","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-ambient-temperature","tag-derating-curves","tag-enclosed-installation","tag-switch-ratings"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Switch Current Ratings: 10A vs 16A vs 20A Derating Curves<\/title>\n<meta name=\"description\" content=\"Learn how ambient temperature and enclosed installations affect switch current ratings. Understand derating curves for 10A, 16A, and 20A switches.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mordio.com\/ar\/switch-current-ratings-derating-curves-ambient-temperature\/\" \/>\n<meta property=\"og:locale\" content=\"ar_AR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Switch Current Ratings: 10A vs 16A vs 20A Derating Curves\" \/>\n<meta property=\"og:description\" content=\"Learn how ambient temperature and enclosed installations affect switch current ratings. 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href=\"https:\/\/mordio.com\/ar\/category\/news\/\" rel=\"category tag\">News<\/a>","rttpg_excerpt":"Understanding Switch Current Ratings and Derating When selecting wall switches for commercial or industrial applications, the nominal current rating\u201410A, 16A, or 20A\u2014is only part of the story. 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