{"product_id":"8-channel-rs485-relay-module-modbus-rtu-30a-high-current","title":"8-Channel RS485 Relay Module Modbus RTU 30A High Current","description":"\n\u003ch2\u003e8-Channel RS485 Ethernet Relay Module with Modbus RTU Protocol — 30A High Current\u003c\/h2\u003e\n\u003cp\u003eTake full control of your industrial automation setup with this robust \u003cstrong\u003e8-channel RS485 relay module\u003c\/strong\u003e. Designed for demanding environments, this module supports the widely-used \u003cstrong\u003eModbus RTU protocol\u003c\/strong\u003e and is engineered for fast, stable, and reliable communication across a variety of industrial control applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8-Way High-Current Relay Control:\u003c\/strong\u003e Each channel supports up to \u003cstrong\u003e30A\u003c\/strong\u003e, making it suitable for switching heavy loads in industrial or commercial installations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRS485 Industrial Interface:\u003c\/strong\u003e Industry-standard RS485 communication ensures long-distance, noise-immune data transmission in electrically challenging environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModbus RTU Protocol:\u003c\/strong\u003e Seamlessly integrates with PLCs, SCADA systems, HMIs, and other Modbus-compatible controllers right out of the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Layer Isolation:\u003c\/strong\u003e Features built-in power isolation and ADI magnetic coupling isolation to protect both the module and connected equipment from electrical interference and surges.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Recovery Fuse \u0026amp; TVS Protection:\u003c\/strong\u003e Onboard self-recovery fuse and transient voltage suppressor (TVS) circuits provide an additional layer of overcurrent and overvoltage safeguarding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIN Rail ABS Housing:\u003c\/strong\u003e The sturdy ABS rail housing design allows easy mounting on standard DIN rails for organized panel installations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple Operation:\u003c\/strong\u003e Straightforward setup and configuration — minimal wiring and programming effort required to get up and running.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRS485\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModbus RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Current per Channel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Isolation + ADI Magnetic Coupling Isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-Recovery Fuse, TVS Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eABS\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIN Rail\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 8-Channel RS485 Relay Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Only the above item is included. Other products shown are for illustrative purposes only. Due to different production batches, minor differences in product appearance or printed text may occur — this does not affect functionality. Slight color differences may occur due to monitor settings. Measurement tolerance: ±1–3 cm.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-wooden-handle-nylon-bristle-paint-brush-for-oil-painting-dusting-and-cleaning-unrechargeable-hand-tool-set-without-batt-2\"\u003e10Pcs Wooden Handle Nylon Bristle Paint Brush – Hand Tool Set\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-precision-japanese-double-edged-hand-saw-sk5-steel-fine-toothed-for-carpentry-and-gardening-6-inch-blade-portable-mini-1\"\u003e1pc Precision Japanese Double-Edged Hand Saw – SK5 Steel, Portable Mini\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10cm-wireless-led-motion-sensor-night-light-type-c-rechargeable-cabinet-wardrobe-lamp-for-staircase-backlight-kitchen-lighting\"\u003e10CM Wireless LED Motion Sensor Night Light – Type-C Rechargeable\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What communication protocol does this RS485 relay module use?\u003c\/h4\u003e\n\u003cp\u003eA: This 8-channel relay module uses the \u003cstrong\u003eModbus RTU protocol\u003c\/strong\u003e over an RS485 interface, making it directly compatible with PLCs, SCADA systems, HMIs, and virtually any Modbus RTU-capable master device used in industrial automation.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the maximum current each relay channel can handle?\u003c\/h4\u003e\n\u003cp\u003eA: Each of the 8 relay channels is rated for up to \u003cstrong\u003e30 amps\u003c\/strong\u003e, allowing you to switch high-current loads suitable for heavy-duty industrial and commercial control applications.\u003c\/p\u003e\n\u003ch4\u003eQ: How is the module protected against electrical interference and surges?\u003c\/h4\u003e\n\u003cp\u003eA: The module features multiple protection layers: \u003cstrong\u003ebuilt-in power isolation\u003c\/strong\u003e, \u003cstrong\u003eADI magnetic coupling isolation\u003c\/strong\u003e, a \u003cstrong\u003eself-recovery fuse\u003c\/strong\u003e, and \u003cstrong\u003eTVS (transient voltage suppressor) circuits\u003c\/strong\u003e — all working together to shield the module and connected equipment from electrical noise, overcurrent, and voltage spikes.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this module be mounted on a DIN rail?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The module comes in an \u003cstrong\u003eABS DIN rail housing\u003c\/strong\u003e, allowing straightforward mounting on standard DIN rails for clean, organized panel installations.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What communication protocol does this RS485 relay module use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This 8-channel relay module uses the Modbus RTU protocol over an RS485 interface, making it directly compatible with PLCs, SCADA systems, HMIs, and virtually any Modbus RTU-capable master device used in industrial automation.\"}}, {\"@type\": \"Question\", \"name\": \"What is the maximum current each relay channel can handle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each of the 8 relay channels is rated for up to 30 amps, allowing you to switch high-current loads suitable for heavy-duty industrial and commercial control applications.\"}}, {\"@type\": \"Question\", \"name\": \"How is the module protected against electrical interference and surges?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module features multiple protection layers: built-in power isolation, ADI magnetic coupling isolation, a self-recovery fuse, and TVS (transient voltage suppressor) circuits — all working together to shield the module and connected equipment from electrical noise, overcurrent, and voltage spikes.\"}}, {\"@type\": \"Question\", \"name\": \"Can this module be mounted on a DIN rail?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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