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Black plastic PTC starter relay and thermal overload protector set for refrigerator compressor

Unique-Bargains

Unique-Bargains Refrigerator PTC Starter Relay 12 Ohm 4 Pin + Thermal Overload Protector 1/2HP 375W

SKU CH-WMYD-7V1NX

A 12 ohm 4 pin PTC starter relay paired with a 1/2HP 375W thermal overload protector for refrigerator compressor repair

  • TypeHeatsinks only
  • Inexpensive repair kit for fridge compressors
  • 12 ohm 4-pin PTC relay starts motor reliably
  • 1/2 HP 375 W overload protector prevents damage
  • Compact relay body measures 1.3 x 0.83 x 1.12 in
  • Lightweight protector housing 1.24 x 1.14 x 0.87 in

Replacement PTC relay kit

The Unique-Bargains kit supplies a 12 ohm four-pin PTC starter relay paired with a thermal overload protector rated for 375 W and half-horsepower compressors. It is intended for technicians or owners repairing mini fridges, coolers or similar small refrigeration units where the original relay has failed. The two components work together to start the compressor motor and cut power if current draw becomes excessive.

Compact plastic housings fit tight spaces

Both parts are moulded in black plastic with low-profile dimensions that suit cramped compressor compartments. The relay measures 3.25 by 2.1 by 2.85 cm while the protector is 3.15 by 2.9 by 2.2 cm, so they can be installed without modifying the existing mounting layout. Four-pin plug-in connection on the relay allows straightforward removal and replacement using basic hand tools.

Ready-to-install pair saves sourcing time

The package contains one starter relay and one overload protector, eliminating the need to order the parts separately or match specifications across suppliers. Having both components in hand lets the repair be completed in a single visit, reducing appliance downtime for the user.

Highlights

  • Inexpensive repair kit for fridge compressors
  • 12 ohm 4-pin PTC relay starts motor reliably
  • 1/2 HP 375 W overload protector prevents damage
  • Compact relay body measures 1.3 x 0.83 x 1.12 in
  • Lightweight protector housing 1.24 x 1.14 x 0.87 in

Specifications

BrandUnique Bargains
TypeHeatsinks only

Questions about this item

What does the 12 ohm 4-pin PTC starter relay control in practice?

The 12 ohm 4-pin PTC starter relay manages the compressor start winding on mini fridges and coolers, engaging only during the brief start-up phase before the overload protector takes over.

What clearance does the 3.25 x 2.1 x 2.85 cm relay and 3.15 x 2.9 x 2.2 cm protector need to fit?

The relay needs a 1.3 x 0.83 x 1.12 inch space and the protector a 1.24 x 1.14 x 0.87 inch space, so verify the compressor terminal box has at least those clearances.

How are the relay and protector installed, and which step is often missed?

Push the 4-pin relay onto the compressor start and run terminals, then snap the protector onto the common terminal; the step often missed is confirming the protector sits flush on the common pin so it can trip at 375W.

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