---
product_id: 385210591
title: "Baomain Universal Rotary Changeover Switch SZW26-40/D303.3D with Master Switch Exterior Box 660V 40A 3 Position 12 Terminals 3 Phase"
brand: "baomain"
price: "¥10948"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/385210591-baomain-universal-rotary-changeover-switch-szw26-40-d303-3d-master
store_origin: JP
region: Japan
---

# 660V high voltage rating 3-position rotary changeover 12 secure screw terminals Baomain Universal Rotary Changeover Switch SZW26-40/D303.3D with Master Switch Exterior Box 660V 40A 3 Position 12 Terminals 3 Phase

**Brand:** baomain
**Price:** ¥10948
**Availability:** ✅ In Stock

## Summary

> 🔄 Switch Smart, Power Strong – Own the Flow of Energy!

## Quick Answers

- **What is this?** Baomain Universal Rotary Changeover Switch SZW26-40/D303.3D with Master Switch Exterior Box 660V 40A 3 Position 12 Terminals 3 Phase by baomain
- **How much does it cost?** ¥10948 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/385210591-baomain-universal-rotary-changeover-switch-szw26-40-d303-3d-master)

## 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

- • **Built to Last:** Durable 3-pole design engineered for heavy-duty 3-phase systems
- • **Secure Connections:** 12 screw terminals provide reliable, stable wiring for complex setups
- • **Master Your Circuit:** Includes master switch exterior box for enhanced safety and control
- • **Power Up with Confidence:** Handles up to 660V and 40A for robust industrial performance
- • **Seamless Switching Control:** 3-position lockable rotary switch ensures precise ON-OFF-ON operation

## Overview

The BaomainUniversal Rotary Changeover Switch SZW26-40/D303.3D is a heavy-duty, 3-pole rotary switch designed for 3-phase electrical systems. Rated for 660V and 40A, it features a lockable 3-position (ON-OFF-ON) mechanism with 12 screw terminals for secure wiring, housed in a master switch exterior box to ensure safety and reliable circuit control.

## Description

Baomain Universal Rotary Changeover Switch SZW26-40/D303.3D with Master Switch Exterior Box 660V 40A 3 Position 12 Terminals 3 Phase

## Features

- Model : SZW26-40/D303.3D
- Pole Numbers : 3 Pole; Action Type: Locking
- Positions : 3 Positions(1-0-2/ON-OFF-ON),12 Screw Terminals
- Ui : 660V; Ith : 40A; Ue : AC240V/AC440V
- AC-23A le : 30A; AC-3 le : 22A; AC-4 le : 11A

## Product Details

- **Operation Mode:** ON-OFF-ON
- **Current Rating:** 40 Amps
- **Operating Voltage:** 660 Volts
- **Contact Type:** No Nc
- **Connector Type:** Screw
- **Brand:** Baomain
- **Terminal:** Screw
- **Item dimensions L x W x H:** 4.3 x 4.3 x 5.3 inches
- **Circuit Type:** 3-way
- **Actuator Type:** Rotary

## Images

![Baomain Universal Rotary Changeover Switch SZW26-40/D303.3D with Master Switch Exterior Box 660V 40A 3 Position 12 Terminals 3 Phase - Image 1](https://m.media-amazon.com/images/I/61Jfkz3X+IL.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.

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/385210591-baomain-universal-rotary-changeover-switch-szw26-40-d303-3d-master](https://www.desertcart.jp/products/385210591-baomain-universal-rotary-changeover-switch-szw26-40-d303-3d-master)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-11*