---
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: "$73.02"
currency: USD
in_stock: true
reviews_count: 8
category: "Heschen"
url: https://www.desertcart.ec/products/332855727-universal-rotary-cam-selector-changeover-switch-szw26-20-d202-2d
store_origin: EC
region: Ecuador
---

# 660V high voltage capacity IP65 waterproof protection 20A heavy-duty current rating 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:** $73.02
**Availability:** ✅ In Stock

## Summary

> ⚙️ Master your power flow with precision and protection!

## 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?** $73.02 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/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

- • **Robust Power Handling:** Supports up to 660V and 20A for demanding electrical setups
- • **Weatherproof Durability:** IP65-rated enclosure ensures reliable outdoor and industrial use
- • **Certified Quality Assurance:** TUV and CE listed for trusted safety and performance standards
- • **Seamless 3-Position Control:** ON-Off-ON rotary switch for precise multi-state operation
- • **Simplified Wiring Experience:** 8 terminal screw connectors housed in a spacious master switch box

## Overview

The Heschen Universal Rotary Cam Selector Changeover Switch (SZW26-20/D202.2D) is a rugged, industrial-grade rotary switch designed for 3-position ON-Off-ON control. Rated for 660V and 20A, it features an IP65 waterproof enclosure and 8 screw terminals housed in a master switch box, making it ideal for reliable, weather-resistant electrical switching in professional and DIY applications.

## Description

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) : desertcart.co.uk: Business, Industry & Science

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: On off on Rotary switch - Being in regular use for 6 months works great can't fault it nice and compact but enough room to get the wiring in nicely Highly recommended

## 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 | 28,409 in DIY & Tools ( See Top 100 in DIY & Tools ) 316 in Switches & Dimmers |
| Brand | Heschen |
| Circuit Type | 3-way |
| Colour | Blue |
| Connectivity Protocol | Wi-Fi |
| Connector Type | Screw |
| Connector type | Screw |
| Contact Material | Metal |
| Contact Type | Normally Open |
| Contact type | Normally Open |
| Control Method | Touch |
| Controller Type | Mechanical knob |
| Country Of Origin | China |
| Current Rating | 20 Amps |
| Current rating | 20 Amps |
| Customer Reviews | 4.6 out of 5 stars 1,998 Reviews |
| Included Components | SZW26-20/D202.2D |
| International Protection Rating | IP65 |
| Item Dimensions | 8.7 x 6.6 x 6.6 centimetres |
| Item height | 6.6 centimetres |
| Manufacturer | SL |
| 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 |
| 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.

### ⭐⭐⭐⭐⭐ On off on Rotary switch
*by A***R on 26 March 2025*

Being in regular use for 6 months works great can't fault it nice and compact but enough room to get the wiring in nicely Highly recommended

### ⭐⭐⭐⭐ Very limited space but good switch...
*by J***N on 11 December 2025*

You only have enough room to wire up!

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

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-01*