This industrial control relay PCB board is designed for reliable automation and power switching applications, featuring a robust green FR-4 substrate and comprehensive interface layout. The board integrates 24V DC power input terminals, RS485 communication ports, and multiple relay output channels, enabling seamless integration into industrial control systems and PLC networks.
With precise circuit routing and high-quality component pads, it ensures stable signal transmission and reliable relay switching, supporting both manual and remote control operations. The clearly labeled terminal blocks (including NO/NC relay contacts, power, and communication pins) simplify wiring and maintenance, making it ideal for industrial automation, smart power distribution, and equipment control systems. Compliant with IPC and RoHS standards, this PCB delivers long-term durability and performance in demanding industrial environments.
| Place of Origin | China (Mainland) |
| Brand Name | Customizable (OEM/ODM supported) |
| Model Number | IND-RELAY-PCB-001 (customizable) |
| Certification | ISO9001, RoHS, IPC Class 2/3 |
| Base Material | FR-4 Glass Epoxy |
| Layers | 2-4 layers (customizable) |
| Board Thickness | 1.6mm |
| Surface Finish | HASL / ENIG |
| Solder Mask | Green (other colors available) |
| Power Input | 24V DC (labeled terminals) |
| Communication Interface | RS485 (labeled A/B pins) |
| Relay Outputs | 3 groups of NO/NC contacts (labeled NO1/COM1/NC1, NO2/COM2/NC2, NO3/COM3/NC3) |
| Control Inputs | Manual control terminals (S1/S2) + signal input headers |
| Operating Temperature | -20°C ~ +70°C |
· Industrial automation control systems & PLC extensions
· Smart power distribution & load switching equipment
· Building automation & access control systems
· Industrial machinery & production line control
· Remote monitoring & relay-based switching devices
1. Clear Interface Labeling: Pre-labeled terminals (power, relay, communication) simplify wiring and reduce installation errors.
2. Reliable Relay Control: Multiple NO/NC relay channels support flexible power switching and load control.
3. Industrial Communication: RS485 interface enables long-distance data transmission and networked control.
4. Stable Power Supply: Dedicated 24V DC power input ensures stable operation in industrial environments.
5. Easy Maintenance: Modular circuit design and accessible components simplify troubleshooting and repairs.
Q: How many relay output channels does this PCB support?
A: It features 3 groups of NO/NC relay contacts (NO1/COM1/NC1, NO2/COM2/NC2, NO3/COM3/NC3) for flexible load control.
Q: What is the maximum load current for the relay outputs?
A: The relay contacts are designed to handle up to 5A/250V AC (customizable for higher current requirements).
Q: Can this PCB be controlled remotely via RS485?
A: Yes, the RS485 interface supports Modbus RTU or other custom protocols for remote control and monitoring.
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