---
product_id: 332855727
title: "Universal Rotary Cam Selector Changeover Switch, SZW26-20/D202.2D, 660V 20A, ON-Off-ON, 3 Position 2 Phase 8 Terminals, with Master Switch Exterior Box,(Standard Box)"
brand: "heschen"
price: "€ 33.79"
currency: EUR
in_stock: true
reviews_count: 13
category: "Heschen"
url: https://www.desertcart.sk/products/332855727-universal-rotary-cam-selector-changeover-switch-szw26-20-d202-2d
store_origin: SK
region: Slovakia
---

# 660V max voltage IP65 waterproof rating 3-position rotary switch Universal Rotary Cam Selector Changeover Switch, SZW26-20/D202.2D, 660V 20A, ON-Off-ON, 3 Position 2 Phase 8 Terminals, with Master Switch Exterior Box,(Standard Box)

**Brand:** heschen
**Price:** € 33.79
**Availability:** ✅ In Stock

## Summary

> 🔧 Switch Smart, Stay Powered – The Ultimate Rotary Control for Pros

## Quick Answers

- **What is this?** Universal Rotary Cam Selector Changeover Switch, SZW26-20/D202.2D, 660V 20A, ON-Off-ON, 3 Position 2 Phase 8 Terminals, with Master Switch Exterior Box,(Standard Box) by heschen
- **How much does it cost?** € 33.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/332855727-universal-rotary-cam-selector-changeover-switch-szw26-20-d202-2d)

## Best For

- heschen enthusiasts

## Why This Product

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

## Key Features

- • **Trusted & Tested:** CE and TUV certified with 4.6-star rating from over 2,000 users.
- • **Seamless Switching:** ON-OFF-ON 3-position rotary design for precise dual circuit management.
- • **Simplify Your Setup:** Includes a spacious master switch exterior box for easy wiring and installation.
- • **Built to Brave the Elements:** IP65-rated waterproof enclosure ensures durability in tough environments.
- • **Power Through with Confidence:** Handles up to 20A and 660V for robust electrical control.

## Overview

The Heschen Universal Rotary Cam Selector Changeover Switch (SZW26-20/D202.2D) is a heavy-duty, 3-position ON-OFF-ON switch rated for 660V and 20A. Featuring an IP65 waterproof metal enclosure and a master switch exterior box, it’s engineered for reliable dual circuit control in demanding electrical setups. Certified by CE and TUV, this switch combines durability, safety, and ease of installation, making it a top choice for professionals managing complex power systems.

## Description

Product Description

Review: Great quality solid switch. - I installed this in my camper, to switch between a battery inverter and mains. Get the the large back box version as wiring is made a lot simpler. I installed an extra gland as there are only two supplied. Wiring is straight forward, although the instructions could be a more helpful.
Review: Good value - Very cool item

## Features

- Model: SZW26-20/D202.2D
- Ui: 660V; Ith: 20A; Uimp: 2.5KV
- Positions: 3 Positions(1-0-2)
- AC-15, Ue: 440V, Ie: 20A; DC-13, Ue: 240A, Ie: 1A
- TUV,CE List; IP65 Waterproof Enclosure

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B097T3DXV8 |
| Actuator Type | Rotary |
| Best Sellers Rank | 22,649 in DIY & Tools ( See Top 100 in DIY & Tools ) 193 in Switches & Dimmers |
| Brand | Heschen |
| Circuit Type | 3-way |
| Colour | Blue |
| Compatible Devices | Electrical panels, motors, and other electrical equipment with screw terminal connections |
| Connectivity Protocol | Wi-Fi |
| Connector Type | Screw |
| Connector type | Screw |
| Contact Material | Metal |
| Contact Type | Normally Open |
| Contact type | Normally Open |
| Control Method | Touch |
| Control Type | Dual Circuit |
| Controller Type | Mechanical knob |
| Country Of Origin | China |
| Current Rating | 20 Amps |
| Current rating | 20 Amps |
| Customer Reviews | 4.6 out of 5 stars 2,157 Reviews |
| Included Components | SZW26-20/D202.2D |
| International Protection Rating | IP65 |
| Item Dimensions | 8.7 x 6.6 x 6.6 centimetres |
| Manufacturer | SL |
| Manufacturer Part Number | SZW26-20/D202.2D |
| Material | Metal |
| Model Number | SZW26-20/D202.2D |
| Mounting Type | Panel Mount |
| Number of Items | 1 |
| Number of Positions | 3 |
| Operating Voltage | 660 Volts |
| Operating voltage | 660 Volts |
| Operation Mode | ON-OFF-ON |
| Operation mode | ON-OFF-ON |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specification Met | CE |
| Switch Type | Rotary |
| Terminal | Screw |
| UPC | 711811449314 |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 40 Degrees Celsius |
| Wattage | 13200 watts |

## Product Details

- **Brand:** Heschen
- **Connector type:** Screw
- **Contact type:** Normally Open
- **Current rating:** 20 Amps
- **Item dimensions L x W x H:** 8.7 x 6.6 x 6.6 centimetres
- **Material:** Metal
- **Operating voltage:** 660 Volts
- **Operation mode:** ON-OFF-ON
- **Switch type:** Rotary
- **Terminal:** Screw

## Images

![Universal Rotary Cam Selector Changeover Switch, SZW26-20/D202.2D, 660V 20A, ON-Off-ON, 3 Position 2 Phase 8 Terminals, with Master Switch Exterior Box,(Standard Box) - Image 1](https://m.media-amazon.com/images/I/71g8wzkq30L.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this ok for switching between 2 different 240v supplies up to 10 amps in a camper van**
A: I’ve not fitted it yet, but I’m using the one I’ve purchased for that purpose. Incoming 240v mains supply or 240v from inverter on to the camper can system.

**Q: Using as a camper hook up to invertor where will the earth go please, do we use a seperate wago or something**
A: Yes, just connect all earths into a Wago connector or similar. Space is tight inside this enclosure. Also, be sure to buzz out connections and switching prior to wiring, the identification of the terminals is not overly clear.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality solid switch.
*by A***R on 2 November 2025*

I installed this in my camper, to switch between a battery inverter and mains. Get the the large back box version as wiring is made a lot simpler. I installed an extra gland as there are only two supplied. Wiring is straight forward, although the instructions could be a more helpful.

### ⭐⭐⭐⭐⭐ Good value
*by A***R on 25 January 2026*

Very cool item

### ⭐⭐⭐⭐ Work great, could do with a bit bigger casing
*by D***G on 14 June 2023*

These are a decent build quality. They only come with two glands, so be aware of that. Can't figure out how to install the included jumper bars. Really they need a bit more space to connect the earth cables, but they are much more compact than triple pole versions. They look tidy and have a very nice, positive click.

## Frequently Bought Together

- Heschen Universal Rotary Cam Selector Changeover Switch, SZW26-20/D202.2D, 660V 20A, ON-Off-ON, 3 Position 2 Phase 8 Terminals, with Master Switch Exterior Box,TUV(Standard Box)
- Leviton 5278-CWP Straight Blade Flanged Male Power Inlet Receptacle, 15 A, 125 V, Nylon Face, Body And Strap , gray

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**Shop now:** [https://www.desertcart.sk/products/332855727-universal-rotary-cam-selector-changeover-switch-szw26-20-d202-2d](https://www.desertcart.sk/products/332855727-universal-rotary-cam-selector-changeover-switch-szw26-20-d202-2d)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-07-30*