---
product_id: 297008746
title: "HELICS [ST-420]:[Automatic] AIR Conditioner ON/Off Switch | Motor Starter .."
brand: "helics"
price: "RM244"
currency: MYR
in_stock: true
reviews_count: 1
url: https://www.desertcart.com.my/products/297008746-helics-st-420-automatic-air-conditioner-on-off-switch-motor
store_origin: MY
region: Malaysia
---

# Low & High Voltage Protection (130V-270V) LED Indicators for Real-Time Status Adjustable Current Setting up to 20A HELICS [ST-420]:[Automatic] AIR Conditioner ON/Off Switch | Motor Starter ..

**Brand:** helics
**Price:** RM244
**Availability:** ✅ In Stock

## Summary

> ⚙️ Power up your space with smart protection and control — never miss a beat!

## Quick Answers

- **What is this?** HELICS [ST-420]:[Automatic] AIR Conditioner ON/Off Switch | Motor Starter .. by helics
- **How much does it cost?** RM244 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/297008746-helics-st-420-automatic-air-conditioner-on-off-switch-motor)

## Best For

- helics enthusiasts

## Why This Product

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

## Key Features

- • **Smart Voltage Guard:** Automatically shields your AC from damaging voltage spikes and drops, ensuring uninterrupted comfort.
- • **Robust Motor Starter:** Reliable push-button ON/OFF operation with built-in overload protection tailored to inverse time current curves.
- • **Instant Visual Alerts:** Multi-color LED indicators keep you informed of motor status, overload, and voltage issues at a glance.
- • **Sleek Wall-Mount Design:** Compact, white plastic casing fits seamlessly into modern interiors while delivering industrial-grade durability.
- • **Customizable Current Control:** Set your motor’s current precisely up to 20 Amps for optimized performance and energy efficiency.

## Overview

The HELICS ST-420 is an automatic air conditioner ON/OFF switch and motor starter designed for professional-grade power protection. Featuring low and high voltage cutoffs (130V-270V), adjustable current settings up to 20 Amps, and LED indicators for motor and voltage status, it ensures safe, efficient operation. Its push-button control and wall-mount design make it a practical choice for managing AC units with built-in overload protection based on inverse time current characteristics.

## Description

HELICS [ST-420] Automatic AIR Conditioner ON/Off Switch | Motor Starter | AC Starter with Power Protection Overload, HIGH Voltage, Low Voltage : desertcart.in: Industrial & Scientific

Review: Unit is not working - There is no support from the supplier.helics people are neither replying to email or picking up phone.

## Features

- Low Voltage Protection (Below 130V)
- High Voltage Protection (Over 270V)
- Overload Protection (as per inverse time current characteristics).
- Indication of Motor On, Low voltage, High voltage & Overload by LED &Variable Current (Amp.) Setting.
- Variable Current (Amp.) Setting.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08RX6573S |
| Brand | HELICS |
| Brand Name | HELICS |
| Colour | white |
| Connectivity Protocol | Wi-Fi |
| Contact Type | Normally Open |
| Controller Type | Push Button |
| Current Rating | 20 Amps |
| Customer Reviews | 3.4 out of 5 stars 15 Reviews |
| Item Dimensions | 14 x 10 x 8 Centimeters |
| Item Weight | 0.67 Kilograms |
| Manufacturer | HELICS, HELICS, www.helicsindia.com |
| Manufacturer Contact Information | HELICS, www.helicsindia.com |
| Material Type | Plastic |
| Model Number | ST-420 |
| Mounting Type | Wall Mount |
| Operating Voltage | 230 Volts |
| Operation Mode | ON-OFF |
| Switch Type | Push Button |
| Unit Count | 950.00 Grams |
| Warranty Description | 1 Year Warranty |

## Product Details

- **Operation Mode:** ON-OFF
- **Current Rating:** 20 Amps
- **Operating Voltage:** 230 Volts
- **Contact Type:** Normally Open
- **Brand:** HELICS

## Images

![HELICS [ST-420]:[Automatic] AIR Conditioner ON/Off Switch | Motor Starter .. - Image 1](https://m.media-amazon.com/images/I/71UYLbeWRHL.jpg)

## Questions & Answers

**Q: Can i use it as a 1 hp water pump starter to reduce the high current jerk of the motor.. My water is running from a 2 kva inverter that overlaods some**
A: Yes sir, it can be used for your water pump starter to protect the water pump from overload current as well as high and low voltage protection.

**Q: Sir again a question can i use this as a soft starter from my inverter to run water pump as my inverter overlaods**
A: Yes sir it can be used in series.

**Q: Is it manually also**
A: Yes sir

**Q: Can it be used to start a 1 hp water pump?**
A: Yes it can be used for 1 Hp Motor pump to No/Off it. If you us it in Auto-Mode that it will start by it self incase of Power-off and Manual Mode it you have to manually on it. It will come will all the protection High, Low Voltage and Overload Protections with variable Ampere Settings option

## Customer Reviews

### ⭐ Unit is not working
*by N***H on 11 September 2022*

There is no support from the supplier.helics people are neither replying to email or picking up phone.

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**Shop now:** [https://www.desertcart.com.my/products/297008746-helics-st-420-automatic-air-conditioner-on-off-switch-motor](https://www.desertcart.com.my/products/297008746-helics-st-420-automatic-air-conditioner-on-off-switch-motor)

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-16*