Overload Olp And Relay Protector Compatible with Fridge

1. PTC Start Relay (The Black Box)

This is a Positive Temperature Coefficient (PTC) relay. Its job is to provide a momentary power boost to the compressor's start winding to get it spinning.

• How it works: When the fridge turns on, the relay is cold and has low resistance, allowing current to flow to the start winding. As it heats up, its resistance skyrockets, effectively cutting off the start winding so the compressor can run efficiently on just the main winding.

• Common Signs of Failure: If you hear a "clicking" sound every few minutes but the compressor doesn't start, or if you shake the relay and it rattles like broken glass, the internal ceramic disc has likely shattered.

2. Overload Protector (The Small Circular Part)

This is a bimetallic safety switch that sits against the compressor housing.

• How it works: It monitors both the temperature of the compressor and the amount of current it's drawing. If the compressor gets too hot or draws too much power (due to a mechanical jam or electrical fault), the bimetal strip inside "trips" and cuts power to prevent a fire or permanent motor damage.

• Common Signs of Failure: If this part is faulty, the compressor will receive no power at all, and your fridge will remain silent and warm.
  
  
  

  Product Specifications Summary

  Feature	Details
  Common Use	Replacing parts on Mini Fridges, Wine Coolers, and Deep Freezers.
  Typical Resistance	Often 4.7 Ohm, 12 Ohm, or 15 Ohm (check the markings on your specific part).
  Pin Configuration	Available in 1, 2, 3, or 4-pin versions (yours appears to be a multi-pin kit).
  Compatibility	Universally used by brands like LG, Samsung, Kenmore, and Haier.