Description
30A Single Channel Relay Module – Opto coupler Isolated High Power Relay
The 30A 1-Channel Relay Module with Optocoupler Isolation is a high-power relay board designed to safely control large loads such as motors, pumps, heaters, appliances, and industrial equipment.
With an optocoupler isolation circuit, it protects the low-voltage control side (Arduino, Raspberry Pi, ESP32, STM32, PLCs, etc.) from high-voltage surges, ensuring safety and reliability. Its 30A rated relay makes it suitable for heavy-duty applications where standard 10A relays are insufficient.
Key Features
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High power relay rated up to 30A for heavy loads.
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Optocoupler isolation ensures safe separation between control and load sides.
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Compatible with Arduino, Raspberry Pi, ESP32, STM32, and other controllers.
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Supports 5V/12V control signals (depending on model variant).
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LED indicators for power and relay status.
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Screw terminal connectors for secure load wiring.
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Suitable for AC and DC load switching.
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Durable PCB design with mounting holes.
Technical Specifications
| Specification | Details |
|---|---|
| Module Type | 1-Channel Relay Module |
| Relay Rating | AC 250V / 30A, DC 30V / 30A |
| Control Voltage | 5V / 12V (variant dependent) |
| Trigger Type | Low-level trigger |
| Isolation | Optocoupler for safe input/output separation |
| Terminals | Screw terminal blocks |
| Indicator | Power & status LED |
| Dimensions | Compact PCB with mounting holes |
| Applications | Heavy-duty switching, industrial automation, smart home |
Applications
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Industrial machinery control – motors, pumps, compressors.
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Smart home automation – control high-power appliances.
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HVAC systems – fans, heaters, coolers.
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Battery & solar power systems – switching high-current DC loads.
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IoT & Robotics – safe control of heavy electrical devices.
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DIY electronics – advanced projects requiring high-current switching.