{"product_id":"yokogawa-sr-508-00-safety-relay-module","title":"Yokogawa SR-508-00 Safety Relay Module","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSR-508-00\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-integrity safety relay module designed by Yokogawa Electric Corporation for use in Safety Instrumented Systems (SIS) such as the Yokogawa ProSafe-RS platform.\u003c\/p\u003e\n\u003cp\u003eThis module functions as a critical safety interface between low-power logic controllers and field-side safety actuators. It is commonly used for:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eEmergency shutdown (ESD) circuits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSafety interlock protection loops\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEquipment fail-safe control logic\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SR-508-00 is engineered for deterministic safety operation and high electrical isolation performance. Its 4 kVrms galvanic isolation prevents hazardous voltage propagation between field devices and control electronics.\u003c\/p\u003e\n\u003cp\u003eThe hardware is built for harsh industrial environments, featuring surge protection and wide temperature tolerance, making it suitable for continuous operation in oil and gas, chemical processing, and power generation facilities.\u003c\/p\u003e\n\u003chr\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 Identifier\u003c\/td\u003e\n\u003ctd\u003eSR-508-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDevice Type\u003c\/td\u003e\n\u003ctd\u003eSafety relay \/ signal isolation module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e20.4 – 28.8 V DC (-15% to +20%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e35 – 40 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDielectric Strength\u003c\/td\u003e\n\u003ctd\u003e4 kVrms (1 minute test)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Protection\u003c\/td\u003e\n\u003ctd\u003e6 kV (1.2\/50 μs waveform)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvervoltage Category\u003c\/td\u003e\n\u003ctd\u003eClass II (up to 300 V compliance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 °C to +70 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003e35 mm DIN rail mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eSafety Application and Logic\u003c\/h3\u003e\n\u003cp\u003eThe SR-508-00 is commonly deployed to:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDrive final control elements such as shutdown valves\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProvide dry-contact feedback signals to safety controllers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintain electrical separation between controller outputs and field actuators\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts isolation architecture helps prevent back-EMF damage and ground-loop noise from affecting safety loop performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan the SR-508-00 be installed in outdoor enclosures?\u003c\/strong\u003e\u003cbr\u003eYes. However, due to its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eIP20 rating\u003c\/strong\u003e, it must be installed inside a secondary protective enclosure that provides dust and moisture protection, such as NEMA or higher IP-rated cabinets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the significance of the 6 kV surge rating?\u003c\/strong\u003e\u003cbr\u003eThe surge rating ensures the module can withstand transient voltage spikes caused by lightning events or heavy industrial switching without propagating faults into the control logic circuitry.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51834118537528,"sku":"SR-508-00","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/SR-508-00.jpg?v=1772073647","url":"https:\/\/www.automodulexpert.com\/products\/yokogawa-sr-508-00-safety-relay-module","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}