5A 12V Overcurrent Protection AC Current Detection Sensor Module
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The 5A 12V Overcurrent Protection AC Current Detection Sensor Module is designed to monitor and limit AC current in real-time, offering protection for electrical loads and circuits. This module detects current levels using a built-in transformer and triggers a relay or output when the current exceeds the adjustable threshold. It supports AC loads up to 5 Amps and operates on a 12V DC power supply. Ideal for overcurrent protection in motors, pumps, lighting systems, and other sensitive electronics, it is widely used in automation, industrial control, and safety monitoring applications.
LC 5A 12V Overcurrent Protection AC Current Detection Sensor Module uses a current transformer to collect the AC signal to achieve the relay over-current signal output within 0-5A. Relay pull while over-current, relay released while not over-current. Users can use the relay COM; NC, NO three ports to control the external circuit on and off, in order to achieve over-current protection.
Functions:
- Current detection resolution can change the parameter of resistance parameters;
- Output over-current switching signal output;
- The over-current signal setting critical point adjustable.
Using Instructions:
- Measured the wire through the current transformer, connect VCC and GND to the DC12V power supply;
- Adjust the potentiometer, when you hear the sound of the relay pull (can be measured with a multimeter COM and NO whether was turned on; is connected to the relay means activated), then reduce or cut off the current flowing that through the tested wire; if the relay release at this time that over-current protection point has been identified (available to multimeter COM and NC measurement whether is connected; is connected to the relay means it release);
- When reduce or cut off the current flowing through the wire; the relay is not released, will still need to continue to adjust the potentiometer to find the over-current protection point.
Applications
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AC motor and pump overcurrent protection
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Automated power shutdown in overload conditions
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Home appliance and device current monitoring
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Industrial automation control systems
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DIY protection circuits for electronics projects
Features
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AC current detection with 5A rating
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12V DC operating voltage with <20mA draw
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Adjustable overcurrent threshold
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Switch signal output for controller integration
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Wide AC frequency support from 20Hz to 400Hz
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Built-in mounting holes for easy installation
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Compact, lightweight module design
Specifications
| Parameter | Details |
|---|---|
| Item Type | Current Sensor |
| Model Type | Protection Sensor Module |
| Operating Voltage | 12V DC |
| Operating Current | < 20mA |
| Frequency Range | 20Hz to 400Hz |
| Detection Capacity | Up to 5A AC |
| Output Mode | Switch signal output |
| Mounting Hole Diameter | 52.5 mm |
| Dimensions (L x W x H) | 38 x 44 x 12 mm |
| Weight | 22g |
| Shipping Weight | 0.03 kg |
| Shipping Dimensions | 5 x 4 x 2 cm |
Package Include:-
1x5A overcurrent protection sensor module AC current detection sensor 12V relay Switch