{"product_id":"schneider-lrn357n-37-50a","title":"Schneider Electric LRN357N Easy TeSys Protect Thermal Overload Relay, 37...50 A, Class 10A","description":"\u003cp\u003eThe Schneider Electric LRN357N is a high-performance differential thermal overload relay from the Easy TeSys Protect range, specifically engineered for reliable motor protection. This unit provides essential phase failure sensitivity and thermal protection for AC networks, designed for direct mounting under LC1N40 to LC1N95 contactors to ensure operational safety in industrial environments.\u003c\/p\u003e\n\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n  \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n    \u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct ID (MPN)\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eLRN357N\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003c!-- Section: Main Parameters --\u003e\n  \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n    \u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eThermal Protection Adjustment Range\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e37...50 A\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n    \u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eThermal Overload Class\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eClass 10A conforming to IEC 60947-4-1\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n    \u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Operational Voltage [Ue]\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e\u0026lt;= 690 V AC\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n    \u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003ePhase Failure Sensitivity\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eTripping current I 30 % of Ir on one phase, others at Ir\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n    \u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eAuxiliary Contact Composition\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e1 NO + 1 NC\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003c!-- Section: Installation \u0026 Mechanical --\u003e\n  \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n    \u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct Compatibility\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eLC1N40...95\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n    \u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eNetwork Frequency\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e50...60 Hz\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n    \u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Insulation Voltage [Ui]\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e690 V conforming to IEC 60947-4-1\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n    \u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eIP Degree of Protection\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eIP20 conforming to IEC 60529\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n    \u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eDimensions (H x W x D)\u003c\/td\u003e\n    \u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e54 mm x 70 mm x 113 mm\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Schneider","offers":[{"title":"1 pcs","offer_id":52537859277079,"sku":null,"price":45.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":52537859309847,"sku":null,"price":120.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":52537859342615,"sku":null,"price":235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/Snipaste_2026-03-23_10-53-07.png?v=1774234409","url":"https:\/\/www.apexonsupply.com\/products\/schneider-lrn357n-37-50a","provider":"Apexon Solutions LLC","version":"1.0","type":"link"}