---
product_id: 7520803
title: "RCO810 3 n' 1 START Hard Start Kit , Black"
brand: "supco"
price: "KD 7.91"
currency: KWD
in_stock: true
reviews_count: 8
category: "Supco"
url: https://www.desertcart.com.kw/products/7520803-rco810-3-n-1-start-hard-start-kit-black
store_origin: KW
region: Kuwait
---

# 110-125Vac power range Pre-wired for quick install 3-in-1 relay, capacitor & overload RCO810 3 n' 1 START Hard Start Kit , Black

**Brand:** supco
**Price:** KD 7.91
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your compressor comeback with Supco’s 3-in-1 start kit!

## Quick Answers

- **What is this?** RCO810 3 n' 1 START Hard Start Kit , Black by supco
- **How much does it cost?** KD 7.91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/7520803-rco810-3-n-1-start-hard-start-kit-black)

## Best For

- supco enthusiasts

## Why This Product

- Trusted supco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Revive & Thrive:** Breathe new life into compressors from 1/12 to 1/5 HP effortlessly.
- • **Trusted by Pros:** Supco’s proven reliability with 4.5-star rating and thousands of happy users.
- • **Plug & Play Power:** Totally pre-wired design slashes installation time to under 15 minutes.
- • **Triple Threat Tech:** Integrated relay, capacitor, and overload device for seamless startup performance.
- • **Energy-Smart Efficiency:** Optimizes compressor start-up, reducing energy waste and extending appliance life.

## Overview

The Supco RCO810 3 n' 1 START Hard Start Kit is a pre-wired, all-in-one solution designed to revive compressors between 1/12 and 1/5 horsepower. Combining a relay, capacitor, and overload device, it ensures efficient, reliable startups while saving time on installation. Ideal for extending the life of older freezers and HVAC units, this kit is a cost-effective fix trusted by professionals and DIYers alike.

## Description

Product Description This 3 in 1 start kit is for compressors with horse power of 1/12 through 1/5. From the Manufacturer This 3 in 1 start kit is for compressors with horse power of 1/12 through 1/5.

Review: GREAT PRODUCT WILL BUY AGAIN IF HAVING COMPRESSOR ISSUES - Bought for a deep freezer that had a start relay issue on the compressor, typical "tick....tick" sound. instructions where clear and helpful, installation took a sum total of 10 minutes. and freezer works as designed. brought a ten plus year old freezer back from the dead and saved it from the scrap yard.
Review: An easy and cheap fix to replace a broken and obsolete freezer start relay - I used one of these to revive a 1995 upright Kenmore freezer that I use for homebrew fermentations. I moved the freezer recently and after letting it sit unpowered for a day when I plugged it in the compressor would start for 5 seconds then cut out though the blower would continue. The freezer wouldn't cool at all. A bit of googling pointed to the start relay as the likely culprit but that part, which is also used in this era's Whirlpool and Fridigaire freezers, was no longer manufactured and the only one I could find was $60 on desertcart. However it was sold in the marketplace and was shipped from overseas so I'd be taking a chance I could not return it if it didn't work. Continuing to look for solutions, I found a youtube video which showed how the Supco 3 n' 1 could be used to replace the start relay and since it was only $11 and sold by desertcart it was a less risky purchase. The only question before buying it was how much horsepower my freezer had, as that determined which Supco I needed to buy. My freezer apparently was 1/5 HP based on a website I found which equated amp and volts to HP so I went with the 810 as opposed to 410 model. Changing out the start relay and installing the Supco then zip tying it in place was about a 15 minute job. Make sure you remove all of the old starter relay so you can see the 3 pins on the compressor where the Supco connects and you then connect the two power wires from the old start relay to those on the Supco. The freezer immediately started working correctly again and has been for about a week. It is running more efficiently that it did with the old start relay based on how much electricity it is using now versus running with the old start relay as shown by my Kill-a-watt meter. Not bad for a 22 year old freezer.

## Features

- 110 To 125Vac
- Includes Relay, Capacitor, And Overload Device
- Totally Pre-Wired
- Brand Name: Supco

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00A8O0E5Y |
| Amperage | 16 |
| Battery Capacity | 1 |
| Battery Type | Lead-Acid, AGM |
| Best Sellers Rank | #29,854 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #80 in Industrial Electrical Capacitors |
| Brand Name | Supco |
| Compatible with Vehicle Type | RV, Truck, Trailer |
| Customer Reviews | 4.5 out of 5 stars 2,566 Reviews |
| Included Components | Single Supco RCO810 3 n' 1 START Hard Start Kit, Black |
| Item Dimensions D x W x H | 30"D x 8"W x 6"H |
| Item Height | 2 inches |
| Item Type Name | 3 n' 1 START Hard Start Kit |
| Item Weight | 0.2 Pounds |
| Manufacturer | CE Sundberg |
| Manufacturer Part Number | RCO810 |
| UPC | 759569276561 687152023790 |
| Unit Count | 1.0 Count |
| Voltage | 125 Volts |

## Product Details

- **Brand:** Supco
- **Battery Cell Composition:** Lead-Acid, AGM
- **Voltage:** 125 Volts
- **Product Dimensions:** 30"D x 8"W x 6"H
- **Vehicle Service Type:** RV, Truck, Trailer

## Images

![RCO810 3 n' 1 START Hard Start Kit , Black - Image 1](https://m.media-amazon.com/images/I/81FrozBiXrL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ GREAT PRODUCT WILL BUY AGAIN IF HAVING COMPRESSOR ISSUES
*by M***L on November 5, 2025*

Bought for a deep freezer that had a start relay issue on the compressor, typical "tick....tick" sound. instructions where clear and helpful, installation took a sum total of 10 minutes. and freezer works as designed. brought a ten plus year old freezer back from the dead and saved it from the scrap yard.

### ⭐⭐⭐⭐⭐ An easy and cheap fix to replace a broken and obsolete freezer start relay
*by R***Y on February 20, 2017*

I used one of these to revive a 1995 upright Kenmore freezer that I use for homebrew fermentations. I moved the freezer recently and after letting it sit unpowered for a day when I plugged it in the compressor would start for 5 seconds then cut out though the blower would continue. The freezer wouldn't cool at all. A bit of googling pointed to the start relay as the likely culprit but that part, which is also used in this era's Whirlpool and Fridigaire freezers, was no longer manufactured and the only one I could find was $60 on Amazon. However it was sold in the marketplace and was shipped from overseas so I'd be taking a chance I could not return it if it didn't work. Continuing to look for solutions, I found a youtube video which showed how the Supco 3 n' 1 could be used to replace the start relay and since it was only $11 and sold by Amazon it was a less risky purchase. The only question before buying it was how much horsepower my freezer had, as that determined which Supco I needed to buy. My freezer apparently was 1/5 HP based on a website I found which equated amp and volts to HP so I went with the 810 as opposed to 410 model. Changing out the start relay and installing the Supco then zip tying it in place was about a 15 minute job. Make sure you remove all of the old starter relay so you can see the 3 pins on the compressor where the Supco connects and you then connect the two power wires from the old start relay to those on the Supco. The freezer immediately started working correctly again and has been for about a week. It is running more efficiently that it did with the old start relay based on how much electricity it is using now versus running with the old start relay as shown by my Kill-a-watt meter. Not bad for a 22 year old freezer.

### ⭐⭐⭐⭐⭐ Great product
*by K***L on October 3, 2013*

I used to be a service technician and I have often used Supco products for cost effective and easy to install replacements for factory parts that are far more expensive. I have never had a problem with them failing so I feel that I can recommend these products for out of warranty equipment. I used this product to replace the start relay, overload and capacitor on a refrigerator that somebody had given me. The man didn't know what was wrong with this refrigerator as it occasionally wouldn't cool. I got it home, plugged it in and heard the familiar sound of the overload device as it clicked open because the compressor wouldn't start. I waited as it went through several cycles and finally it started. The refrigerator cooled but when it cycled off on the thermostat it wouldn't start again so I was confident that there was a problem with the start system, I checked online for replacement parts for this brand of refrigerator and they were far more expensive than what I was willing to spend so I ordered the Supco product.as a replacement. This is probably a product for a person who is somewhat familiar with compressors, wiring diagrams and schematics as it's not just a direct factory replacement part. However, I have always been satisfied with Supco products. This refrigerator works wonderfully and I'm thankful for is as it is newer and in better condition than my old one. .

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-02*