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Home / Computer Hardware, Monitors & Peripherals / 5A Overcurrent Protection Sensor Module AC Current Detection Signal Output 5V 12V 24V Relay

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Input Voltage 5V / 12V / 24V DC
Detection Type AC Current Only
Current Range 0.1A to 5A
Output Signal TTL Level / Relay Drive
Response Time Less than 1 Second
Operating Temperature -20°C to 70°C
PCB Dimensions 45mm x 25mm x 15mm
Mounting Type Screw Hole Mounting
Status Indicator Red/Green LED
Isolation Optocoupler Isolated

5 reviews

A

Anonymous

Apr 15, 2026

Rating: 5/5

Fast shipping and well packed

Module arrived quickly and was protected well against static. Integrated it into a custom HVAC controller. No issues so far after two weeks of continuous operation.

A

Anonymous

Mar 31, 2026

Rating: 5/5

Works great for pump protection

Used this module to protect a water pump from drawing too much current. It trips reliably when the load exceeds the set threshold. Easy to wire into my control box.

A

Anonymous

Mar 13, 2026

Rating: 5/5

Reliable protection

Tested the trip point with a variable load and it was accurate. The LED indicator is bright enough to see status from a distance. Happy with this purchase.

A

Anonymous

Feb 28, 2026

Rating: 4/5

Solid build quality

The PCB looks clean and soldering is good. It does get slightly warm under continuous load near the max rating, so ensure some airflow in your enclosure.

A

Anonymous

Feb 13, 2026

Rating: 4/5

Good value but instructions vague

The hardware quality is solid and it functions as advertised. However, the wiring diagram included was a bit small. Had to look up similar modules online to confirm connections.

5 FAQ

Q: Does this sensor work with DC current loads?

A: No, this module is designed specifically for AC current detection. Using it with DC loads will not provide accurate readings or protection.

Q: Is the current trip threshold adjustable?

A: Yes, there is a potentiometer on the board that allows you to calibrate the overcurrent trip point within the 0.1A to 5A range.

Q: Is there electrical isolation between the sensor and control side?

A: Yes, the module features optocoupler isolation to protect your low-voltage control circuitry from the high-voltage AC side.

Q: Can I use a 24V power supply for this module?

A: Yes, the module supports 5V, 12V, and 24V DC input voltages. Please ensure you select the correct jumper setting if applicable.

Q: What is the maximum load the onboard relay can handle?

A: This module provides a signal output to drive an external relay. The maximum load depends on the external relay you connect, not this sensor module itself.

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