{"product_id":"bently-nevada-81546-01-brand-new-original-relay-board","title":"Bently Nevada 81546-01 | Brand New Original | Relay Board","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 81546-01\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a critical\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSignal Input and Relay Board\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor the legacy\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3300 Machinery Protection System\u003c\/strong\u003e. This board facilitates the physical connection between field transducers (XDCR) and the monitoring rack while providing essential alarm relay outputs for machinery safety interlocks. It serves as the primary interface for recording terminals and external alarm annunciation, ensuring that vibration and position data translate into actionable protection logic. We supply this component as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original in Factory Packing\u003c\/strong\u003e, providing a reliable solution for maintaining legacy 3300 system integrity.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Value\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3300 Series Component\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e81546-01\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBoard Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSignal Input \/ Alarm Relay Board\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTransducer I\/O and Alarm Logic Output\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada 3300 Monitoring Racks\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAssociated Components\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eOften used with 79748-01 Alarm Relay assemblies\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRear-rack I\/O position\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-30°C to +65°C (-22°F to +149°F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.39 kg (0.86 lbs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCSA, UL, CE compliant\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Alarm Logic Execution:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 81546-01 houses physical relay contacts that interface directly with plant emergency shutdown systems (ESD). This hardware-based approach ensures immediate machine tripping during \"Danger\" conditions, independent of external software processing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplified Field Wiring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe board features dedicated record terminals for transducer inputs (XDCR). This organized termination structure reduces installation errors and allows maintenance teams to quickly probe signals for troubleshooting without disconnecting primary protection loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Transient Suppression:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBently Nevada engineers this board to withstand the high-energy electrical noise typical in turbine halls and motor control centers. It protects the sensitive internal rack electronics from surges originating in the field cabling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRedundant Relay Capability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe architecture supports multiple relay configurations, allowing for \"Normally Energized\" or \"Normally De-energized\" logic. This flexibility enables engineers to design fail-safe protection schemes tailored to specific site safety requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDirect Legacy Replacement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAs a genuine OEM part, the 81546-01 drops directly into existing 3300 series racks. It restores full relay functionality to aging systems without the need for complex rewiring or system migration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 81546-01 include the relay components?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, this board functions as the primary signal input and relay interface. It typically works in conjunction with the 79748-01 assembly to provide a complete I\/O and alarm output path for the 3300 monitor modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this board with 3500 series racks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 81546-01 is specifically designed for the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3300 Series Machinery Protection System\u003c\/strong\u003e. The 3500 series utilizes different I\/O and Relay Module architectures (such as the 3500\/32 or 3500\/33).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAre the relay outputs dry contacts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the 81546-01 typically provides dry relay contacts, allowing you to switch external voltages for annunciators, PLC inputs, or master trip solenoids within the rated contact specifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the condition of this unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee this is a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBently Nevada part. It arrives in factory-sealed packaging, ensuring the gold-plated contacts and relay components remain free from oxidation and ready for immediate service.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":43190665609306,"sku":"81546-01","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/432_08ab5726-f305-4ce2-9c75-29de5fa19d0a.jpg?v=1775617753","url":"https:\/\/www.spareoil.com\/products\/bently-nevada-81546-01-brand-new-original-relay-board","provider":"SpareOil Automation","version":"1.0","type":"link"}