{"product_id":"tsuruga-electric-t-531-detect-relay-2421d-1-29-h0-t0-a","title":"Tsuruga Electric t-531 Detect Relay 2421d-1-29-h0-t0-a","description":"\u003ch3 data-section-id=\"17lc1ru\" data-start=\"0\" data-end=\"16\"\u003eDescription:\u003c\/h3\u003e\n\u003cp data-start=\"17\" data-end=\"513\"\u003eThe Tsuruga Electric T-531 2421D-1-29-H0-T0-A \u003ca href=\"https:\/\/plgautomation.com\/collections\/safety-components\"\u003eDetect Relay\u003c\/a\u003e is used in industrial monitoring and alarm control systems for detecting abnormal process conditions. Commonly installed in automation panels, control systems, and electrical monitoring equipment requiring high\/low limit detection from analog signals. Maintenance teams and system integrators use this relay for repair, replacement, retrofit, and maintaining reliable alarm and protection functions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5ms9th\" data-start=\"515\" data-end=\"532\"\u003eApplications:\u003c\/h3\u003e\n\u003cp data-start=\"533\" data-end=\"1013\"\u003eThe Tsuruga Electric 2421D-1-29-H0-T0-A detect relay monitors a 4–20 mA DC input signal and provides relay outputs when preset high or low limits are reached. It is commonly used in industrial process control, instrumentation, motor protection, and automation systems where operators need alarm detection from analog transmitters and sensors. The 2421 series supports two alarm settings with relay contact outputs for monitoring applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"5hg6bl\" data-start=\"1015\" data-end=\"1044\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"1045\" data-end=\"1969\"\u003e• Manufacturer: Tsuruga Electric Corporation\u003cbr data-start=\"1089\" data-end=\"1092\"\u003e• Manufacturer Part Number (MPN): 2421D-1-29-H0-T0-A\u003cbr data-start=\"1144\" data-end=\"1147\"\u003e• Model Series: T-531 \/ 2400 Series Detect Relay\u003cbr data-start=\"1195\" data-end=\"1198\"\u003e• Product Type: Analog detect relay \/ alarm relay\u003cbr data-start=\"1247\" data-end=\"1250\"\u003e• Input Signal: DC 4–20 mA\u003cbr data-start=\"1276\" data-end=\"1279\"\u003e• Output Type: Relay contact output\u003cbr data-start=\"1314\" data-end=\"1317\"\u003e• Alarm Configuration: High (H) and Low (L) limit detection\u003cbr data-start=\"1376\" data-end=\"1379\"\u003e• Setting Method: Digital switch setting\u003cbr data-start=\"1419\" data-end=\"1422\" data-is-only-node=\"\"\u003e• Hysteresis: H0 standard, less than 0.5%\u003cbr data-start=\"1463\" data-end=\"1466\"\u003e• Action Delay: T0, no delay\u003cbr data-start=\"1494\" data-end=\"1497\"\u003e• Power Supply: AC 85–264V, 50\/60Hz\u003cbr data-start=\"1532\" data-end=\"1535\"\u003e• Contact Rating: 250 VAC 0.5A \/ 30 VDC 2A (resistive load)\u003cbr data-start=\"1594\" data-end=\"1597\"\u003e• Mounting Type: Panel mount with socket base\u003cbr data-start=\"1642\" data-end=\"1645\"\u003e• Dimensions: Approx. 28.5 × 72 × 115 mm\u003cbr data-start=\"1685\" data-end=\"1688\"\u003e• Function: Analog signal monitoring and alarm switching\u003cbr data-start=\"1744\" data-end=\"1747\"\u003e• Application: Industrial automation, process control, instrumentation, and electrical monitoring systems\u003cbr data-start=\"1852\" data-end=\"1855\"\u003e• Use: Replacement detect relay for existing Tsuruga control installations\u003cbr data-start=\"1929\" data-end=\"1932\"\u003e\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cz0398\" data-start=\"1971\" data-end=\"1995\"\u003eCommon Replacements:\u003c\/h3\u003e\n\u003cp data-start=\"1996\" data-end=\"2124\"\u003e• Tsuruga \u003ca href=\"https:\/\/plgautomation.com\/products\/tsuruga-electric-t-531-detect-relay-2421d-1-29-h0-t0-a?_pos=1\u0026amp;_sid=971a99427\u0026amp;_ss=r\"\u003e2421D-1-29-H0-T0-A \u003c\/a\u003eDetect Relay\u003cbr data-start=\"2037\" data-end=\"2040\"\u003e• Tsuruga 2421 Series 4–20 mA Alarm Relay\u003cbr data-start=\"2081\" data-end=\"2084\"\u003e• Tsuruga T-531 Analog Detection Relay\u003c\/p\u003e","brand":"Tsuruga","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51714235236654,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_7b92cb53-4285-449e-94b4-4ce0c26a4cc0.jpg?v=1770420124","url":"https:\/\/plgautomation.com\/products\/tsuruga-electric-t-531-detect-relay-2421d-1-29-h0-t0-a","provider":"PLG Automation ","version":"1.0","type":"link"}