{"product_id":"3500-42m-125720-01-bently-nevada-relay-i-o-module","title":"3500\/42M 125720-01 Bently Nevada Relay I\/O Module","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3500\/42M (Part Number 125720-01)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-density relay interface module developed for the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 3500 Machinery Protection System\u003c\/strong\u003e. This module provides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efour independent relay output channels\u003c\/strong\u003e, delivering reliable switching functions for alarm and trip logic in critical rotating machinery protection applications.\u003c\/p\u003e\n\u003cp\u003eDesigned for flexible installation, the module occupies a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efull-width slot in any position to the right of the Rack Interface Module (RIM)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewithin the 3500 rack. Each of the four integrated relays is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efully programmable\u003c\/strong\u003e, enabling engineers to configure custom voting logic required for advanced machine protection and shutdown strategies.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003einternal termination design\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esimplifies field wiring by eliminating the need for external terminal blocks, reducing panel wiring complexity while maintaining strong signal integrity and system reliability in demanding industrial environments.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\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\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003e3500\/42M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e125720-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e4-Channel Relay I\/O Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Configuration\u003c\/td\u003e\n\u003ctd\u003e4 independent relay outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTermination Type\u003c\/td\u003e\n\u003ctd\u003eInternal Terminations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-30°C to +65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e241 mm (H) × 24.4 mm (W) × 99.1 mm (D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.4 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eApplication and Integration\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3500\/42M 125720-01\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emodule plays a critical role within the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3500 system architecture\u003c\/strong\u003e, providing relay outputs used to trigger\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eexternal shutdown systems, alarms, or PLC\/DCS inputs\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt is commonly installed in protection systems for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003esteam turbines, centrifugal compressors, and large industrial motors\u003c\/strong\u003e, where high-speed relay logic and dependable shutdown signaling are essential for maintaining operational safety and equipment integrity. The module supports complex safety logic and integrates seamlessly with other 3500 monitoring modules to provide comprehensive machinery protection.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 125720-01 require a separate I\/O module for logic processing?\u003c\/strong\u003e\u003cbr\u003eNo. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e125720-01\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as the relay output interface within the 3500 rack and operates based on alarm setpoints and logic configured through the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e3500 system software\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan these modules be used with external terminal blocks?\u003c\/strong\u003e\u003cbr\u003eThis specific model is designed with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003einternal terminations for direct wiring\u003c\/strong\u003e. Users who require external field wiring blocks should select the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eexternal-termination variant\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edesigned for that configuration.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":48746735894780,"sku":"3500\/42M 128229-01","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/350042M_138708-012.jpg?v=1773126953","url":"https:\/\/www.electronicplc.com\/products\/3500-42m-125720-01-bently-nevada-relay-i-o-module","provider":"Electronic PLC","version":"1.0","type":"link"}