{"product_id":"basler-be3-25-1a1n4-single-phase-synchronizing-check-relay-120vac","title":"Basler BE3-25-1A1N4 Single-Phase Synchronizing Check Relay 120VAC","description":"\u003ch4 class=\"PDq2pG_selectionAnchorContainer\"\u003eDescription\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eThe Basler BE3-25-1A1N4 is a single-phase synchronizing check relay designed to monitor voltage, phase angle, and slip frequency before allowing the parallel connection of two AC power sources. Operating on a 120 VAC input at 50\/60 Hz, it features an \"energize-for-sync\" operation mode for live-to-live bus monitoring. Housed in a heavy-duty industrial enclosure, this precision relay prevents out-of-phase synchronization that could otherwise cause severe damage to generators and electrical distribution equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable style=\"border-collapse: collapse; width: 490px; max-width: 100%; font-size: 14px; height: 263px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,1,0,0\"\u003e\u003cb data-path-to-node=\"9,1,0,0\" data-index-in-node=\"0\"\u003eCondition\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,1,1,0\"\u003eNew\/Never Used Surplus\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,2,0,0\"\u003e\u003cb data-path-to-node=\"9,2,0,0\" data-index-in-node=\"0\"\u003eBrand\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,2,1,0\"\u003eBasler Electric\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,3,0,0\"\u003e\u003cb data-path-to-node=\"9,3,0,0\" data-index-in-node=\"0\"\u003eCategory\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,3,1,0\"\u003ePanel Accessories\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,4,0,0\"\u003e\u003cb data-path-to-node=\"9,4,0,0\" data-index-in-node=\"0\"\u003ePart Number\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,4,1,0\"\u003eBE3-25-1A1N4\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,5,0,0\"\u003e\u003cb data-path-to-node=\"9,5,0,0\" data-index-in-node=\"0\"\u003eSubcategory\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,5,1,0\"\u003eRelay\/Socket\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,6,0,0\"\u003e\u003cb data-path-to-node=\"9,6,0,0\" data-index-in-node=\"0\"\u003eSeries\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,6,1,0\"\u003eBE3 Series\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,7,0,0\"\u003e\u003cb data-path-to-node=\"9,7,0,0\" data-index-in-node=\"0\"\u003eRelay Type\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,7,1,0\"\u003eSynchronizing Check (Sync-Check) Relay\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,8,0,0\"\u003e\u003cb data-path-to-node=\"9,8,0,0\" data-index-in-node=\"0\"\u003ePhase Configuration\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,8,1,0\"\u003eSingle Phase\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,9,0,0\"\u003e\u003cb data-path-to-node=\"9,9,0,0\" data-index-in-node=\"0\"\u003eInput Voltage\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,9,1,0\"\u003e120 VAC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,10,0,0\"\u003e\u003cb data-path-to-node=\"9,10,0,0\" data-index-in-node=\"0\"\u003eOperating Frequency\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,10,1,0\"\u003e50\/60 Hz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,11,0,0\"\u003e\u003cb data-path-to-node=\"9,11,0,0\" data-index-in-node=\"0\"\u003eOperation Logic\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,11,1,0\"\u003eEnergize for Sync (Live \/ Live)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 164.15625px;\"\u003e\u003cspan data-path-to-node=\"9,12,0,0\"\u003e\u003cb data-path-to-node=\"9,12,0,0\" data-index-in-node=\"0\"\u003eWeight\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 318.859375px;\"\u003e\u003cspan data-path-to-node=\"9,12,1,0\"\u003e5.44 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eBE3-25-1A1N4\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eThe BE3-25-1A1N4 belongs to Basler Electric's BE3 Series of protective monitoring relays engineered for reliable electrical power system management. Its precise comparator circuitry continuously evaluates potential differences across breaker contacts, granting trip or close permission only when voltage and phase parameters fall within safe, pre-set synchronism limits. Compatibility covers standard utility switchgear controls, auxiliary tripping relays, and generator synchronizing panels. It is widely applied in co-generation plants, industrial backup power systems, utility substation tie lines, and marine electrical distribution boards.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"5,0,0\"\u003eRelay Function: Single-phase synchronizing check (sync-check) relay\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,1,0\"\u003eSeries Lineage: Basler BE3 Series protective electrical relay\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,2,0\"\u003eVoltage Input: 120 VAC nominal input rating\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,3,0\"\u003eFrequency Range: 50\/60 Hz system compatibility\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,4,0\"\u003eOperation Mode: Energize-for-sync configuration for live\/live bus monitoring\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,5,0\"\u003eProtection Purpose: Prevents out-of-phase paralleling of AC power sources\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,6,0\"\u003eConstruction Weight: Robust 5.44 kg industrial relay assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe BE3-25-1A1N4 delivers the reliability and precision required for safe generator paralleling and electrical power system protection.\u003c\/p\u003e\n\u003cp id=\"p-rc_c7b8f4fae39e183e-25\"\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"Basler","offers":[{"title":"Default Title","offer_id":52937907765546,"sku":"BE3-25-1A1N4","price":615.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/s-l1200_350a2ec3-5893-44b3-8574-ddba77ae2af3.jpg?v=1791973623","url":"https:\/\/iqelectro.com\/products\/basler-be3-25-1a1n4-single-phase-synchronizing-check-relay-120vac","provider":"IQElectro","version":"1.0","type":"link"}