AC Short Circuit & Current Limit Protection Relay Module 0.5-20A
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Prices updated: 12 Oct 2026
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About this product
This protection module monitors AC current on a power line and uses a relay to disconnect the supply when the current exceeds a set limit between 0.5A and 20A, protecting the load from overcurrent and short circuits. It is powered from 9-24V DC and provides 1.5 kV isolation.
Specifications
- DC supply voltage
- 9-24V DC
- Supply current
- 100-200 mA
- Current limit range
- 0.5A to 20A
- Isolation voltage
- 1.5 kV
- Operating temperature
- -20 to 125 °C
Frequently asked questions
Does it work on AC or DC lines?
The module is described as a test object of AC current, with real-time current detection. Its own control supply is 9-24V DC.
How is it wired?
The protected line passes through the module, and the module's control circuit is powered from 9-24V DC. Follow the wiring diagram supplied with the module, and have mains wiring done by a qualified person.
