{"product_id":"selectron-lyss-gm-u-31-0-3-phase-voltage-monitoring-relay-110-240-vac","title":"Selectron Lyss – GM-U 31-0 – 3-Phase Voltage Monitoring Relay, 110–240 VAC","description":"\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eGM‑U 31‑0\u003c\/b\u003e\u003c\/span\u003e by Selectron Lyss is a compact panel-mount, three-phase voltage monitoring relay engineered to safeguard industrial power systems. It continuously monitors three-phase lines, providing adjustable over\/under-voltage detection and phase-sequence verification. Equipped with one normally closed and one normally open contact, it delivers reliable protection through selectable trip delay and asymmetry monitors, designed to meet rigorous Swiss quality standards.\u003c\/p\u003e\u003cp class=\"p2\"\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003c\/p\u003e\u003cp class=\"p2\"\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003ch3\u003e\u003cb\u003e Key Features\u003c\/b\u003e\u003c\/h3\u003e\u003cp\u003e\u003c\/p\u003e\u003cp class=\"p2\"\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eModel:\u003c\/b\u003e\u003c\/span\u003e GM‑U 31‑0\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eFunction:\u003c\/b\u003e\u003c\/span\u003e 3-phase voltage \u0026amp; phase-sequence monitoring with single-pole NC\/NO contacts \u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSupply Voltage:\u003c\/b\u003e\u003c\/span\u003e 110–240 VAC (phase-to-phase), suitable for diverse electrical networks\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTrip Settings:\u003c\/b\u003e\u003c\/span\u003e Adjustable under-voltage, over-voltage limits, phase imbalance\/asymmetry, phase rotation check\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTiming Delay:\u003c\/b\u003e\u003c\/span\u003e Built-in delay to prevent nuisance trips; adjustable per application \u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eContacts:\u003c\/b\u003e\u003c\/span\u003e 1 NC + 1 NO relay outputs, rated typically 5 A @ 250 VAC \u003cspan class=\"Apple-converted-space\"\u003e \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eConstruction:\u003c\/b\u003e\u003c\/span\u003e Durable plug-in module made in Switzerland, compact and high reliability\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCertifications:\u003c\/b\u003e\u003c\/span\u003e CE‑marked; conforms to European EMC and safety standards EN 60730 \/ EN 61010\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e","brand":"VOLTWERK Handel","offers":[{"title":"Default Title","offer_id":55818493460854,"sku":"EB-286669235555","price":33.25,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/4202\/8857\/files\/57_725038de-6305-4e2a-8729-cde45c6c741d.png?v=1750719939","url":"https:\/\/www.volt-werk.com\/products\/selectron-lyss-gm-u-31-0-3-phase-voltage-monitoring-relay-110-240-vac","provider":"VOLTWERK Handel","version":"1.0","type":"link"}