---
product_id: 45739341
title: "Baomain Self-Locking Push Button Switch 3-Phase 30A 3.7KW, Industrial 3-Pole Heavy Duty,BMBSP-330/TBSP-330"
brand: "baomain"
price: "145 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Baomain"
url: https://www.desertcart.ro/products/45739341-baomain-self-locking-push-button-switch-3-phase-30a-3
store_origin: RO
region: Romania
---

# 30A current rating Secure self-locking ON/OFF Compact 3.5”x1.8”x2” size Baomain Self-Locking Push Button Switch 3-Phase 30A 3.7KW, Industrial 3-Pole Heavy Duty,BMBSP-330/TBSP-330

**Brand:** baomain
**Price:** 145 Lei
**Availability:** ✅ In Stock

## Summary

> 🔧 Power up your control with confidence—lock in performance, unlock productivity!

## Quick Answers

- **What is this?** Baomain Self-Locking Push Button Switch 3-Phase 30A 3.7KW, Industrial 3-Pole Heavy Duty,BMBSP-330/TBSP-330 by baomain
- **How much does it cost?** 145 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/45739341-baomain-self-locking-push-button-switch-3-phase-30a-3)

## 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

- • **Lock It Down Securely:** Innovative self-locking push button ensures your circuit stays exactly where you want it—ON or OFF.
- • **Versatile Compatibility:** Works effortlessly with both 380V 3-phase and 220V 2-phase systems—one switch, multiple uses.
- • **Power Through Like a Pro:** Handles heavy-duty 3.7KW loads with 30A current for industrial-grade reliability.
- • **Built for Industrial Toughness:** Durable brass contacts and IP65 rating mean this switch thrives in demanding environments.
- • **Fits Your Control Panel Perfectly:** Standard compact dimensions make installation seamless in most 380V control panels.

## Overview

The Baomain Self-Locking Push Button Switch BMBSP-330 is a heavy-duty, industrial-grade 3-pole switch designed for 3-phase 30A/380V AC systems. It supports up to 3.7KW power loads, features a secure self-locking mechanism for reliable ON/OFF control, and fits standard control panels with its compact size. Ideal for motors, pumps, CNC machines, and other industrial equipment, it combines robust brass contacts with IP65 protection for durability in tough environments.

## Description

Baomain Self-Locking Push Button Switch 3-Phase 30A 3.7KW, Industrial 3-Pole Heavy Duty,BMBSP-330/TBSP-330: desertcart.com: Industrial & Scientific

Review: Added Switch for wrapper machine - Worked great for my pallet wrapper
Review: Good switch for any stationary tool or electrical power need - Installed for pump switch. Works perfect. And the switch stays locked in either on or off position. Dislike ground capability. No place to hide wire inside box. For 240, it’s a 3 wire box, so ground is outside. If used for 110, you can use all three poles. Just remember, BLACK (RED 240v) are the LOAD WIRE. WHITE is NUTRAL. Make sure all connections are tight and works great.

## Features

- 3-Phase 30A/380V AC Switch – Handles 3.7KW power loads for heavy-duty industrial equipment, compliant with 3-phase electrical systems
- Secure Self-Locking Design – Press "ON" to lock the circuit; "OFF" button instantly disconnects
- Easy Installation – Standard compact size (3.5”x1.8”x2”) fits most 380V control panels.
- Wide Compatibility – Works with 380V 3-phase and 220V 2-phase systems.
- Versatile Applications – Perfect for motors, pumps, CNC machines, and 380V AC control panels requiring manual switching

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01KLS09NI |
| Actuator Type | push button switch |
| Best Sellers Rank | #47,825 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #142 in Pushbutton Switches |
| Brand | Baomain |
| Circuit Type | 3-way |
| Connectivity Protocol | X-10 |
| Connector Type | Screw |
| Contact Material | Brass |
| Contact Type | Normally Open |
| Control Method | Push Button |
| Controller Type | Push Button |
| Current Rating | 30 Amps |
| Date First Available | August 18, 2016 |
| International Protection Rating | IP65 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Item dimensions L x W x H | 1.57 x 3.15 x 1.57 inches |
| Item model number | BMBSP-330 |
| Manufacturer | Baomain Electric Co.,Ltd |
| Number of Items | 1 |
| Number of Positions | 2 |
| Operating Voltage | 380 Volts (AC) |
| Operation Mode | ON-OFF |
| Product Dimensions | 1.57 x 3.15 x 1.57 inches |
| Terminal | Screw |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 70 Degrees Celsius |
| Wattage | 3700 watts |

## Product Details

- **Brand:** Baomain
- **Connector Type:** Screw
- **Contact Type:** Normally Open
- **Current Rating:** 30 Amps
- **Item dimensions L x W x H:** 1.57 x 3.15 x 1.57 inches
- **Material:** Acrylic
- **Operating Voltage:** 380 Volts (AC)
- **Operation Mode:** ON-OFF
- **Switch Type:** Push Button
- **Terminal:** Screw

## Images

![Baomain Self-Locking Push Button Switch 3-Phase 30A 3.7KW, Industrial 3-Pole Heavy Duty,BMBSP-330/TBSP-330 - Image 1](https://m.media-amazon.com/images/I/51TgjBSvX9L.jpg)

## Available Options

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

## Questions & Answers

**Q: Are the gray circular pieces to be discarded where the wire enters and exits the switch or modified in some fashion?**
A: Those are meant to be drilled out or cut to seal around the cable you use with the switch.

**Q: Can this be used to control a single phase compressor motor**
A: Yes it can I used it to run a single phase 240 volt compressor and it will work with 120 also

**Q: Is this water proof?**
A: No it is not sealed up like waterproof switches are

**Q: Looking to control single phase 120V wood shop equipment.  Will this switch latch on at 120 Volts and work with single phase?**
A: Yes, it will, just use one of the three sets of contacts.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Added Switch for wrapper machine
*by R***A on December 23, 2025*

Worked great for my pallet wrapper

### ⭐⭐⭐⭐⭐ Good switch for any stationary tool or electrical power need
*by M***C on May 27, 2023*

Installed for pump switch. Works perfect. And the switch stays locked in either on or off position. Dislike ground capability. No place to hide wire inside box. For 240, it’s a 3 wire box, so ground is outside. If used for 110, you can use all three poles. Just remember, BLACK (RED 240v) are the LOAD WIRE. WHITE is NUTRAL. Make sure all connections are tight and works great.

### ⭐⭐⭐⭐⭐ Perfect For Smaller Wires
*by S***R on October 22, 2025*

Love this thing! simple but good design and very nice look and fit-up, only issue is there isn't a lot of room inside for wires, not good for super thick cables, worked great with 14awg. Probably going to last a long time due to durability.

## Frequently Bought Together

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-22*