5A Overcurrent Protection Sensor Module with 12V Relay Switch

5A Over-current protection 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, to achieve over-current protection.

Specifications :

• Operating voltage: DC12V;
• Operating current: <20MA;
• Operating frequency range: 20Hz ~ 400Hz;
• Output mode: switch signal output;
• Maximum detection wire diameter: 5.2mm;

Instructions of Use :

• By setting the potentiometer to set the overcurrent protection point, the clockwise adjustment reduces the detection current.
• 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 (it can be measured with a multimeter COM and NO whether it was turned on; is connected to the relay means activated), then reduce or cut off the current flowing 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, and will still need to continue to adjust the potentiometer to find the over-current protection point.