{"product_id":"bender-gmbh-irdh275b-427-insulation-monitoring-device","title":"Bender GmbH IRDH275B-427 Insulation Monitoring Device","description":"\u003cdiv\u003e\u003cp\u003eThe Bender ISOMETER IRDH275B-427 is a DIN-rail mounted insulation monitoring device designed to continuously monitor the insulation resistance of unearthed IT power systems (AC and DC) that include galvanically connected rectifiers and converters. It measures insulation resistance over a range of 1 kΩ to 10 MΩ with adjustable alarm thresholds, and supports dual alarm levels (pre-alarm and main alarm) delivered through a pair of SPDT relays rated up to 5 A at 250 VAC. The unit features a BMS interface for data exchange with other Bender devices and supervisory systems, along with a memory and real‑time clock and an automatic self‑test to detect sensor disconnection or system fault. The IRDH275B-427 family is designed for insulation monitoring in high‑voltage IT installations, with insulation monitoring for AC systems up to 0–793 VAC and DC systems up to 0–650 V, while the device itself is typically supplied from a DC source in the range of 19.2–72 V. Mounting is on a 35 mm DIN rail with an IP20 protection rating, suitable for installation inside control cabinets. Common applications include medical IT power distribution, data centers, and industrial plants where early fault detection of insulation helps prevent equipment damage and safety hazards. \u003c\/p\u003e\u003c\/div\u003e","brand":"BENDER","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51676882862382,"sku":null,"price":725.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_6f597fb3-5858-407a-bf17-2a29c0f942e1.jpg?v=1769554745","url":"https:\/\/plgautomation.com\/products\/bender-gmbh-irdh275b-427-insulation-monitoring-device","provider":"PLG Automation ","version":"1.0","type":"link"}