5A 12V Overcurrent Protection AC Current Detection Sensor Module

5A 12V Overcurrent Protection AC Current Detection Sensor Module is a overcurrent protection sensor module. It uses a current transformer to collect AC signals and realizes the relay signal output after an overcurrent in the range of 0-5A.The relay pulls in when there is overcurrent, and the relay is released when there is no overcurrent. The user can use the COM, NC, and NO ports of the relay to control the on and off of the external circuit, so as to realize the overcurrent protection function.

 Features:

• It uses a plug-in LM2596 external heat sink, which can withstand high current operation.
• The input end uses a 4A rectifier bridge stack to input AC power, and has a dedicated DC input port, which is commonly used for AC and DC input.
• The output voltage can be adjusted, ranging from 3.3V to 30V.

Specifications:

• Operating voltage: DC12V
• Operating current: <20MA
• Input Voltage: AC 5V-22V/DC 5V-35V
• Output Voltage: DC 3.3V-30V
• Output Current: 2.5A
• Output Power: 35W(Max)
• Operating frequency range: 20Hz ~ 400Hz
• Output mode: Switch signal output
• Maximum detection wire diameter: 5.2mm
• Operating environment: -40 ~ +85 DegC
• Current detection range: AC0.3A-5A
• Dimensions (LxWxH)mm: 44 x 38 x 35
• Weight: 22g

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: 

• 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 (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.

Connection Interface:

1.   VCC: working voltage positive
2.   GND: working voltage negative
3.   ON: Normally open, before the relay is closed, NO and COM are disconnected, and connected after being closed.
4.   COM: Common terminal, common interface of relay.
5.   NC: Normally closed, before the relay is closed, NC is connected to COM, and disconnected after being closed.

Package Includes:

• 1 x 5A 12V Overcurrent Protection AC Current Detection Sensor Module.