---
product_id: 390066978
title: "Reliance 9000509-045 Single Element Electric Thermostat"
price: "AR$85071"
currency: ARS
in_stock: true
url: https://www.desertcart.com.ar/products/390066978-reliance-9000509-045-single-element-electric-thermostat
store_origin: AR
region: Argentina
---

# Reliance 9000509-045 Single Element Electric Thermostat

**Price:** AR$85071
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Reliance 9000509-045 Single Element Electric Thermostat
- **How much does it cost?** AR$85071 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/390066978-reliance-9000509-045-single-element-electric-thermostat)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Reliance 9000509-045 Single Element Electric Thermostat

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Reliance |
| Model Name | Reliance 9000509-045 Single Element Electric Thermostat |
| Controller Type | Touch Control |
| Color | Black |
| Specific Uses For Product | Single Element Electric Water Heaters |
| Temperature Control Type | Digital |
| Connectivity Technology | Wired |
| Included Components | Reliance 9000509-045 Single Element Electric Thermostat |
| Power Source | Corded Electric |
| Item Weight | 0.3 Pounds |
| Voltage | 240 Volts |
| Material | Plastic |
| Shape | Rectangular |
| Display Type | LED |
| Control Type | Touch Control |
| Control Method | Touch |
| Connectivity Protocol | BACnet MS/TP |
| Mounting Type | Wall Mount |
| Backlight | No |
| UPC | 020363105488 |
| Global Trade Identification Number | 00020363105488 |
| Manufacturer | Reliance |
| Part Number | 9000509-045 |
| Item Weight | 4.8 ounces |
| Product Dimensions | 2.3 x 3.6 x 10.1 inches |
| Item model number | 9000509-045 |
| Is Discontinued By Manufacturer | No |
| Size | Pack of 1 |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Warranty. |

## Product Details

- **Brand:** Reliance
- **Model Name:** Reliance 9000509-045 Single Element Electric Thermostat
- **Controller Type:** Touch Control
- **Color:** Black
- **Specific Uses For Product:** Single Element Electric Water Heaters

## Images

![Reliance 9000509-045 Single Element Electric Thermostat - Image 1](https://m.media-amazon.com/images/I/51OUWgJm6AL.jpg)

## Questions & Answers

**Q: what are the 2 round circle,s on the back for?**
A: This answer is incorrect, they are temperature sensors that set against the tank

**Q: what are the 2 round on the back for?**
A: If you're talking about the button looking metal circles, they are what senses the tanks temperature. One for the control thermostat, the other for the over temp. Hope this helps.

**Q: I have a 10 gal reliance 501 water heater with a WH7 upper switch. It looks like this one,  Reliance 9000509-045, but size does not match**
A: It may work provided the voltage and number of elements are the same but if the part numbers are different then I wouldn't advise substitution without consulting an expert, which I am not. Sorry I can't be of more help.

**Q: Can I use this for a 240 V single element water heater? Is it rated for 125 or 240 V, or does that even matter?**
A: As far as I know, this thermostat is intended for 220-240 volt single element water heaters.  I don't know if it will work on 110-125 volt water heaters.

## Frequently Bought Together

- AO Smith Reliance 9000509-045 Single Element Electric Thermostat, Pack of 1, Black
- Camco 09883 5" Residential Screw-In Water Heater Element Wrench, Multi, Single Unit
- Camco 1500W 120V Water Heater Element | Screw-In Type | Low Watt Density (02463)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-01-22*