5A Overcurrent Protection Sensor Module with 12V Relay Switch

5A Over-current protection Sensor module uses 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

Features:

• Current detection resolution can change the parameter of resistance parameters
• Output over-current switching signal output
• Over-current signal setting critical point adjustable

Specifications:

• Operating voltage: DC12V
• Operating current: <20MA
• Operating frequency range: 20Hz ~ 400Hz
• Output mode: switch signal
• Output Maximum detection wire diameter: 5.2mm
• Mounting hole: hole diameter is 3mm, hole distance is 52.5mm
• Operating environment: -40 ℃ ~ +85 ℃
• The current detection range :AC0.3A-5A

Connections:

• VCC: Operating voltage positive
• GND :Operating voltage negative
• NO: Normally open, the relay pulls before the NO and COM disconnect, short-circuit after the suction
• COM: common, relay common interface;
• NC: Normally closed, the relay before the NC and COM short-circuit, pull off after.

How to Operate:

By setting the potentiometer to set the overcurrent protection point, the clockwise adjustment reduces the detection current

As bellows:

• Measured the wire through the current transformer , connect VCC and GND to 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, if 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, if connected to the relay means been released)
• 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.