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This 1-channel relay control board is built around a single high-current relay rated for 30A, considerably higher than the 10A rating found on many general-purpose relay modules, making it suited to appliance control and other loads that draw significant current. It follows international safety standards for isolating the control and load areas, so the low-voltage triggering side stays electrically separated from whatever higher-voltage circuit the relay is switching.
The module works as a single-relay unit for appliance control, and its inputs are compatible with both DC and AC-derived control signals, functioning as a general-purpose module for switching AC or DC loads including a full 220V AC circuit.
Trigger voltage is 12VDC, and the relay's switching rating is 250VAC or 30VDC, both at 30A, giving it real headroom for larger appliances, pumps or heaters. A high-impedance controller pin and a pull-down circuit both help prevent the relay from triggering accidentally due to electrical noise or a floating input signal, and a power supply indicator lamp alongside a separate control indicator lamp let you see the board's state at a glance.
Four fixed screw holes with a 3.1mm diameter make mounting the board straightforward inside an enclosure, and the one normally closed plus one normally open contact arrangement gives wiring flexibility depending on whether the connected load should be on or off by default.
Anyone switching a genuinely high-current appliance or heavy DC load from a microcontroller, rather than a small signal-level device, will find this 30A-rated board better suited to the job than a standard lower-current relay module.
30A, at up to 250VAC or 30VDC.
12VDC.
Yes, through optocoupler isolation.
One normally closed and one normally open contact.
Through 4 fixed screw holes, 3.1mm in diameter.
| Brand | Generic |
|---|---|
| Selling unit | PCS |
