---
product_id: 463305003
title: "Baomain Self-Locking Push Button Switch 3-Phase 30A 3.7KW, Industrial 3-Pole Heavy Duty,BMBSP-330/TBSP-330"
brand: "baomain"
price: "$1933"
currency: MXN
in_stock: true
url: https://www.desertcart.mx/products/463305003-baomain-self-locking-push-button-switch-3-phase-30a-3
store_origin: MX
region: Mexico
---

# 30A current rating Screw-terminal secure wiring 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:** $1933
**Availability:** ✅ In Stock

## Summary

> 🔌 Power control that locks in your edge — don’t get left in the dark!

## 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?** $1933 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/463305003-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

- • **Built to Last:** Durable brass contacts and vibration-proof screw terminals guarantee reliable, long-term operation.
- • **Lock It Down Securely:** Self-locking push button ensures your circuit stays ON until you decide otherwise.
- • **Plug & Play Simplicity:** Compact design fits seamlessly into standard 380V control panels for quick installation.
- • **Versatile Compatibility:** Works flawlessly with both 3-phase 380V and 2-phase 220V systems—one switch, endless applications.
- • **Power Up with Confidence:** Handles heavy-duty 3.7KW loads at 380V AC for industrial-grade performance.

## Overview

The Baomain BMBSP-330 is a robust industrial-grade self-locking push button switch designed for 3-phase 30A/380V AC circuits, supporting up to 3.7KW power loads. Its compact form factor and secure screw-terminal wiring make it ideal for motors, pumps, CNC machines, and other heavy-duty equipment requiring reliable manual power control. Engineered with high-conductivity brass contacts and a vibration-resistant design, it ensures stable, long-lasting performance in demanding industrial environments.

## Description

Baomain Industrial 3-Phase Self-Locking Push Button Switch – Reliable Control for Heavy-Duty Equipment  The Baomain BMBSP-330 is a panel-mounted 3-phase (3P) push button switch for industrial/commercial applications, offering 30A/380V AC power control (3.7KW capacity). With a self-locking (maintained) mechanism, it keeps circuits securely ON/OFF until manually pressed, ensuring stable operation for motors, pumps, CNC machines, and heavy-duty machinery. This 30A 380V 3-phase AC switch enables precise power management for 3.7KW loads, ideal for manual switching in 3-phase systems like industrial control panels.  Key Features:3-Pole (3P) Design: Safely controls 3-phase circuits up to 30A/380V AC (3.7KW).This switch can control three phases motor directly, no need to use magnetic switch or a contactor. It can also be wired as required for 2P control circuit applications.Normally Open (NO) Contact: Default OFF position; press "ON" to lock the circuit.High-Conductivity Contacts – Sensitive, low-resistance terminals ensure stable current transfer.Screw-Terminal Wiring: Provides secure, vibration-proof connections for long-term reliability..Compact & Durable: Measures 90x46x51mm (3.5”x1.8”x2”) with a robust housing for long-term use. Product parameters:Model : BMBSP-330; Type : Self-Locking ON/OFF, 3P or 2PRated Voltage : AC 220 or 380V ; Power : 3.7KW; Current : 30ACase material : PlasticsSize (Approx.) : 90 x 46 x 50mm / 3.5" x 1.8" x 2" (L*W*H)Package Content: 1 x Push Button Switch,Weight: 120g. Ideal for: 3-Phase Motors & PumpsCNC Machines & Automation SystemsIndustrial Compressors & Power DistributionManufacturing & Workshop EquipmentGreat for Box Mod, Horn Button Switch, PC Power Switch, Kill Switch or any circuit controls ,electronic DIY equipment.

## 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 |
|---------------|-------|
| Operation Mode | Off,Push Button |
| Current Rating | 30 Amps |
| Operating Voltage | 380 Volts (AC) |
| Contact Type | Normally Open |
| Connector Type | screw |
| Brand | Baomain |
| Terminal | Screw |
| Item dimensions L x W x H | 40 x 80 x 40 Millimeters |
| Circuit Type | 3-way |
| Actuator Type | push button switch |
| Contact Material | Brass |
| International Protection Rating | IP65 |
| Number of Positions | 2 |
| Upper Temperature Rating | 70 Degrees Celsius |
| Controller Type | Push Button |
| Control Method | Push Button |
| Connectivity Protocol | X-10 |
| Wattage | 3700 Watts |
| Net Quantity | 1.0 Count |
| Number of Items | 1 |
| Manufacturer | Baomain Electric Co.,Ltd |
| Country of Origin | USA |
| Model number | BMBSP-330 |
| Specific Product Use | personal |
| Item Weight | 0.28 g |
| Product Dimensions | 4 x 8 x 4 cm; 0.28 g |
| Item model number | BMBSP-330 |
| Item Height | 4 Centimeters |
| Item Width | 8 Centimeters |
| Power Source | AC |
| Included Components | Power Push Button Switch |
| Are batteries included? | No |

## Product Details

- **Operation Mode:** Off,Push Button
- **Current Rating:** 30 Amps
- **Operating Voltage:** 380 Volts (AC)
- **Contact Type:** Normally Open
- **Connector Type:** 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)

## 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.

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-24*