8-Channel RS485 Relay Module Modbus RTU 30A | Industrial
8-Channel RS485 Relay Module Modbus RTU 30A | Industrial
8-Channel RS485 Industrial Relay Module with Modbus RTU Protocol — 30A High Current
Take full command of your industrial automation setup with this robust 8-Channel RS485 Ethernet Relay Module. Engineered for demanding industrial environments, this module supports the widely adopted Modbus RTU protocol and delivers fast, stable, and reliable communication for a broad range of control applications.
Key Features
- 8-Way High-Current Control: Each channel supports up to 30A, making it ideal for switching heavy loads in industrial systems.
- Modbus RTU Protocol: Seamless integration with PLCs, SCADA systems, HMIs, and other industrial control equipment via standard RS485 communication.
- Multi-Layer Isolation Protection: Features built-in power isolation, ADI magnetic coupling isolation, self-recovery fuse, and TVS protection circuits — keeping your equipment and connected devices safe.
- ABS DIN Rail Housing: Compact, durable ABS enclosure designed for standard DIN rail mounting for easy installation in control panels.
- Plug-and-Play Simplicity: Straightforward setup with no complex configuration required — get your system running quickly.
- Stable & Reliable Communication: Optimized for high-speed, interference-free data transfer in noisy industrial environments.
Specifications
| Channels | 8 |
| Communication Protocol | Modbus RTU via RS485 |
| Max Current per Channel | 30A |
| Isolation | Power Isolation + ADI Magnetic Coupling Isolation |
| Protection | Self-Recovery Fuse + TVS Protection Circuit |
| Housing Material | ABS (DIN Rail Mount) |
| Color | Black |
| Country of Origin | Made in China |
What's in the Box?
- 1 × 8-Channel RS485 Relay Module
Ideal Applications
- Industrial automation and process control
- Building management systems
- Remote switching and monitoring
- PLC and SCADA integrations
- Smart factory and IoT control panels
Note: Due to different production batches, minor differences in product appearance or printed text may occur — this does not affect functionality. Slight color variation may appear due to monitor settings. Measurement tolerance: ±1–3 cm.
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Frequently Asked Questions
Q: What communication protocol does this 8-channel relay module use?
A: This relay module uses the Modbus RTU protocol over an RS485 industrial interface. Modbus RTU is a widely supported standard, making it compatible with PLCs, SCADA systems, HMIs, and most industrial automation controllers.
Q: What is the maximum current rating per relay channel?
A: Each of the 8 channels is rated for up to 30 amperes (30A), making this module well-suited for switching high-current loads commonly found in industrial control applications.
Q: What protection features are built into this relay module?
A: The module includes multiple layers of protection: built-in power isolation, ADI magnetic coupling isolation, a self-recovery fuse, and a TVS (Transient Voltage Suppressor) protection circuit. These features safeguard both the module and connected equipment from voltage spikes, surges, and electrical interference.
Q: Is this relay module easy to install?
A: Yes. The module features a standard ABS DIN rail housing for straightforward panel mounting. Its RS485 interface and Modbus RTU protocol ensure compatibility with most industrial systems without complex configuration steps.
Production & Packaging Notice
To 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.