---
product_id: 385210591
title: "BAOMAIN 40A 3-Phase 3-Position Cam Rotary Changeover Switch with Enclosure"
brand: "baomain"
price: "A$53"
currency: AUD
in_stock: true
reviews_count: 13
category: "Baomain"
url: https://www.desertcart.com.au/products/385210591-baomain-40a-3-phase-3-position-cam-rotary-changeover-switch
store_origin: AU
region: Australia
---

# 40A heavy-duty current rating 3-pole, 3-position rotary control IP65 dust & splash resistant enclosure BAOMAIN 40A 3-Phase 3-Position Cam Rotary Changeover Switch with Enclosure

**Brand:** baomain
**Price:** A$53
**Availability:** ✅ In Stock

## Summary

> 🔧 Master your power flow with precision and durability!

## Quick Answers

- **What is this?** BAOMAIN 40A 3-Phase 3-Position Cam Rotary Changeover Switch with Enclosure by baomain
- **How much does it cost?** A$53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/385210591-baomain-40a-3-phase-3-position-cam-rotary-changeover-switch)

## Best For

- baomain enthusiasts

## Why This Product

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

## Key Features

- • **Rugged Protection:** IP65-rated enclosure shields against dust and splashes, perfect for harsh environments.
- • **Stay-Put Security:** Maintained ON-OFF-ON action locks firmly in place, eliminating accidental switch shifts.
- • **Versatile Control Hub:** Ideal for motor control, generator transfer switching, and speed regulation in professional setups.
- • **Power Through Complexity:** Seamlessly manage multi-circuit 3-phase systems with precision 3-pole, 3-position switching.
- • **Built to Last, Built to Perform:** Rated for 40A and 660V, engineered for high-current industrial and backup power demands.

## Overview

The BAOMAIN 40A 3-Phase 3-Position Cam Rotary Changeover Switch is a robust, industrial-grade rotary switch designed for reliable multi-circuit and multi-phase electrical control. Rated at 40 amps and 660 volts, it features a 3-pole, 3-position maintained ON-OFF-ON mechanism housed in an IP65-rated enclosure for dust and splash protection. Perfect for motor control, generator transfer switching, and complex power management, it ensures secure, stable switching in demanding environments.

## Description

BAOMAIN 40A 3-Phase 3-Position Cam Rotary Changeover Switch with Enclosure | Maintained 1-0-2 3-Pole 12-Terminal Rotary Changeover Switch For Motor Control & Generator MTS,heavy-duty,SZW26-40/D303.3D: desertcart.com: Industrial & Scientific

Review: Works very well - Very good quality and works very well. The instructions are written for an electrician so not plain and simple, but they are accurate. Im using it to power my well pump from 2 seperate power sources, grid and solar system while isolating each power system from the other. I got the larger enclosure which is helpful to deal with a lot of heavy solid core wire.
Review: Perfect Switch - I purchased this switch to use in my emergency power backup system for our home. I have had a gas powered standby generator for years and wanted to add a solar/battery generator, as well. One generator feeds 240V, 30amp power while the other feeds 120V, 30amp power. I needed a way to connect both generators to an existing transfer switch, but be able to select which power source was feeding the system. This switch was the perfect solution to that need. With three contacts on all sides of the switch, it accommodated the two power legs and neutral from the 240V generator feeding the same on the output side of the switch. The single power leg and neutral from the 120V generator, along with a jumper, provided the other power to the three wire output. Since there were two inputs to the switch going to a single output, three jumpers were also required. Be aware that the knockouts on the switch box are not standard size but are sized for the rubber grommets that come with the box. Consequently, a standard 1/2" or 3/4" cable connector will not work. An optional 2-part cable connector that can be slipped into the knockout holes will be needed. Also, you will have 11 or 12 10ga. solid copper wires coming into this box that will be very hard to compress into the box once your switch is wired. It can be done with special attention to placement of the wires, though, and when place in service, this is a top quality switch.

## Features

- High-Performance Specs - Rated at 40A (Ith) and 660V (Ui), fully compatible with AC 240V/440V systems. This heavy-duty cam switch is built to handle high-current electrical loads with long-lasting stability
- 3-Pole 3-Stage Design - Features a 3-stage, 12-terminal internal structure that supports 3-pole switching. Perfect for managing complex multi-circuit configurations or simultaneously controlling three phases
- Stable Maintained Action - Designed with a stay-put (non-momentary) mechanism. The handle clicks firmly into each 1-0-2 (ON-OFF-ON) position and remains locked in place, preventing accidental shifts or spring-back
- Durable & Protective Enclosure - Comes with a high-quality, impact-resistant exterior master box. It provides excellent dust and splash protection, making it reliable for harsh industrial or outdoor environments
- Multi-Purpose Application - An ideal solution for motor starting, reversing, and speed regulation. It also functions perfectly as a manual transfer switch (MTS) for backup generators or as a universal selector in industrial panels

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09994XMDR |
| Actuator Type | Rotary |
| Best Sellers Rank | #38,452 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Selector Switches |
| Brand | Baomain |
| Brand Name | Baomain |
| Circuit Type | 3-way |
| Color | Grey |
| Connectivity Protocol | X-10 |
| Connector Type | Screw |
| Contact Material | Brass |
| Contact Type | No Nc |
| Control Method | Touch |
| Control Type | 3 Position ON-OFF-ON |
| Current Rating | 40 A |
| Customer Reviews | 4.3 out of 5 stars 238 Reviews |
| International Protection Rating | IP65 |
| Item Dimensions | 4.3 x 4.3 x 5.3 inches |
| Item Weight | 4.8 ounces |
| Manufacturer | Baomain Electric |
| Material Type | Plastic |
| Model | SZW26-40/D303.3D |
| Mounting Type | Surface Mount |
| Number of Items | 1 |
| Number of Positions | 3 |
| Operating Voltage | 660 volts |
| Operation Mode | ON-OFF-ON |
| Part Number | SZW26-40/D303.3D |
| Specification Met | CE |
| Switch Type | Rotary |
| Terminal | Screw |
| Unit Count | 1 Count |
| Wattage | 26400 watts |

## Product Details

- **Brand:** Baomain
- **Connector Type:** Screw
- **Contact Type:** No Nc
- **Current Rating:** 40 A
- **Item dimensions L x W x H:** 4.3 x 4.3 x 5.3 inches
- **Material:** Plastic
- **Operating Voltage:** 660 volts
- **Operation Mode:** ON-OFF-ON
- **Switch Type:** Rotary
- **Terminal:** Screw

## Images

![BAOMAIN 40A 3-Phase 3-Position Cam Rotary Changeover Switch with Enclosure - Image 1](https://m.media-amazon.com/images/I/61Jfkz3X+IL.jpg)
![BAOMAIN 40A 3-Phase 3-Position Cam Rotary Changeover Switch with Enclosure - Image 2](https://m.media-amazon.com/images/I/61bH4ANhNOS.jpg)
![BAOMAIN 40A 3-Phase 3-Position Cam Rotary Changeover Switch with Enclosure - Image 3](https://m.media-amazon.com/images/I/51Wfl23Y-fS.jpg)
![BAOMAIN 40A 3-Phase 3-Position Cam Rotary Changeover Switch with Enclosure - Image 4](https://m.media-amazon.com/images/I/61tMKud740L.jpg)
![BAOMAIN 40A 3-Phase 3-Position Cam Rotary Changeover Switch with Enclosure - Image 5](https://m.media-amazon.com/images/I/61DkqTqX1lS.jpg)

## Questions & Answers

**Q: What are the locations ot the output of the input locations 1 and 2?**
A: The outputs and inputs are located on the mechanical dial.  Use a multimeter to check current path

**Q: I know this is designed and speced for AC, but is there any reason it could not do DC?  Specifically 90V@10A Max (for a DC motor).**
A: A switch is a switch, it doesn't matter if it is ac or dc.  Amperage does count, however, and since this switch is rated for 40 amps your 10a motor should be perfectly ok.

**Q: Will the terminals accept #12 wire?**
A: In my experience, I had no need to use number 12 wire, but my assumption is the way the clamps work that it would hold # 12 wire. You could always put a feral on the end to make it larger if necessary.

**Q: Is it alright to install this box inside a wall? If yes, anything needs to be done before installation?**
A: You can as long as you are not going over the rated amps. I'm assuming you are going to leave the switch on the outside of the wall.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works very well
*by D***. on July 16, 2026*

Very good quality and works very well. The instructions are written for an electrician so not plain and simple, but they are accurate. Im using it to power my well pump from 2 seperate power sources, grid and solar system while isolating each power system from the other. I got the larger enclosure which is helpful to deal with a lot of heavy solid core wire.

### ⭐⭐⭐⭐⭐ Perfect Switch
*by B***R on February 23, 2024*

I purchased this switch to use in my emergency power backup system for our home. I have had a gas powered standby generator for years and wanted to add a solar/battery generator, as well. One generator feeds 240V, 30amp power while the other feeds 120V, 30amp power. I needed a way to connect both generators to an existing transfer switch, but be able to select which power source was feeding the system. This switch was the perfect solution to that need. With three contacts on all sides of the switch, it accommodated the two power legs and neutral from the 240V generator feeding the same on the output side of the switch. The single power leg and neutral from the 120V generator, along with a jumper, provided the other power to the three wire output. Since there were two inputs to the switch going to a single output, three jumpers were also required. Be aware that the knockouts on the switch box are not standard size but are sized for the rubber grommets that come with the box. Consequently, a standard 1/2" or 3/4" cable connector will not work. An optional 2-part cable connector that can be slipped into the knockout holes will be needed. Also, you will have 11 or 12 10ga. solid copper wires coming into this box that will be very hard to compress into the box once your switch is wired. It can be done with special attention to placement of the wires, though, and when place in service, this is a top quality switch.

### ⭐⭐⭐⭐ Recommend
*by R***B on August 1, 2026*

Works great! Well made

## Frequently Bought Together

- Baomain Universal Rotary Changeover Switch SZW26-40/D303.3D with Master Switch Exterior Box 660V 40A 3 Position 12 Terminals 3 Phase
- Baomain Universal Rotary Changeover Switch SZW26-20/D202.2D-W with Wider Master Switch Exterior Box 660V 20A 3 Position 2 Phase (3.15"x3.15"x3.7")
- MOLLOM 2 Way Circuit Breaker MCB Distribution Protection Box with DIN Rail, IP65 Waterproof,for Indoor and Outdoor

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-09-25*