{"product_id":"ur-4lh-ge-multilin-digital-i-o-module","title":"UR-4LH | GE Multilin | Digital I\/O Module","description":"\u003ch2\u003eGE Multilin UR‑4LH Digital I\/O Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for digital signal execution in Universal Relay (UR) frames, the \u003cstrong\u003eGE Multilin UR‑4LH\u003c\/strong\u003e (\u003cstrong\u003eUR‑4LH\u003c\/strong\u003e digital I\/O module) provides Form‑A latchable output functionality for auxiliary control and interlocking applications within UR‑series protection systems. The module integrates 14 latchable outputs and operates as a high‑power variant of the UR I\/O family.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eUR‑4LH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eGE Multilin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e2.55 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003eapprox. 15 cm L × 18 cm W × 4 cm H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temp\u003c\/th\u003e\n\u003ctd\u003eNot specified (UR‑series ambient norms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Consumption\u003c\/th\u003e\n\u003ctd\u003eNot specified (high‑power digital I\/O module)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eI\/O Type\u003c\/th\u003e\n\u003ctd\u003eForm‑A latchable outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput Count\u003c\/th\u003e\n\u003ctd\u003e14 latchable Form‑A outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMonitoring\u003c\/th\u003e\n\u003ctd\u003eNo current or voltage monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSoftware Support\u003c\/th\u003e\n\u003ctd\u003eEnerVista UR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModule Type\u003c\/th\u003e\n\u003ctd\u003eDigital I\/O module for UR Universal Relays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity and I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eUR‑series digital I\/O modules rely on deterministic backplane timing to ensure predictable output activation and latch behavior. The UR‑4LH’s high‑power design maintains stable rail loading, preventing timing drift during simultaneous multi‑card operations. I\/O density scaling across UR frames allows mixed Form‑A, Form‑C, fast Form‑C, latching, and SSR cards to coexist without firmware flash incompatibility, provided modules remain in their original slot positions.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the UR‑4LH be hot‑swapped while the relay remains energized? A: No. Control power must be removed before insertion or extraction to avoid unintended output transitions and backplane state faults.\u003c\/p\u003e\n\u003cp\u003eQ: Does the UR‑4LH impose any special backplane current requirements? A: As a high‑power digital I\/O module, it draws more rail current than low‑power variants, but remains within UR‑series backplane limits.\u003c\/p\u003e\n\u003cp\u003eQ: Are firmware updates required when replacing a UR‑4LH with another Form‑A module? A: No firmware resides in the module. Slot position must be preserved, but configuration remains at the relay CPU.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRemove control power before handling the module.\u003c\/li\u003e\n\u003cli\u003eOpen the hinged front panel fully to access module bays.\u003c\/li\u003e\n\u003cli\u003eRecord the original slot position; UR modules must be replaced in the same location.\u003c\/li\u003e\n\u003cli\u003eUse inserter clips to slide the module smoothly into the bay and ensure both clips lock simultaneously.\u003c\/li\u003e\n\u003cli\u003eMaintain clean connector surfaces to ensure stable backplane seating.\u003c\/li\u003e\n\u003cli\u003eFollow ESD precautions when accessing relay internals.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":48170750410942,"sku":"UR4LH","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-07-06_10-09-43_277b611e-7a32-48f5-b845-253737bf6b23.png?v=1783419209","url":"https:\/\/www.autooiltech.com\/products\/ur-4lh-ge-multilin-digital-i-o-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}