Summary of Over Current Protection Switch
The Current Sensing Switch is a protection circuit that activates a relay when DC current through a sense resistor exceeds an adjustable set point between 1A and 3A. It provides over-current protection for projects using a 12VDC input, featuring SPDT relay outputs, terminal pins, and mounting holes on a 52x47mm PCB.
Parts used in the Current Sensing Switch:
- Sense resistor
- Relay (SPDT)
- Onboard potentiometer
- Power Battery Terminal (PBT)
- Terminal Pins
- PCB (52 mm x 47 mm)
- Mounting holes (3.2 mm)
Current Sensing Switch is designed to operate a Relay Contact when there is a DC current through the sense resistor exceeds the set point, Set point adjustable from 1A to 3Amp using on board potentiometer. This circuit can offer over current protection to your project.
Specifications
Input: 12 VDC
Range: 1 to 3 A selectable with onboard preset
Output: SPDT Relay (Normally Open & Normally Closed)
Power Battery Terminal (PBT) and Terminal Pins for easy connection
Four mounting holes of 3.2 mm each
PCB dimensions 52 mm x 47 mm
Schematic
For more detail: Over Current Protection Switch
- What is the primary function of this circuit?
It operates a Relay Contact when DC current through the sense resistor exceeds the set point to offer over current protection. - How can the set point be adjusted?
The set point is adjustable from 1A to 3Amp using the onboard potentiometer. - Does this device support AC or only DC?
This circuit is designed specifically to operate when there is a DC current through the sense resistor. - What is the required input voltage?
The specified input voltage for operation is 12 VDC. - Can the output terminals be easily connected?
Yes, it features Power Battery Terminal (PBT) and Terminal Pins for easy connection. - What type of relay contacts are provided?
The output includes an SPDT Relay with both Normally Open and Normally Closed contacts. - How many mounting holes does the PCB have?
The board has four mounting holes, each measuring 3.2 mm. - What are the physical dimensions of the PCB?
The PCB dimensions are 52 mm by 47 mm.
