---
product_id: 193693076
title: "HiLetgo 10pcs Micro Limit Switch KW12-3 AC 250V 5A SPDT 1NO 1NC Micro Switch Normally Open Close Limit Switch with Roller Lever Arm Black"
brand: "hiletgo"
price: "AR$21822"
currency: ARS
in_stock: true
reviews_count: 12
category: "Hi Letgo"
url: https://www.desertcart.com.ar/products/193693076-hiletgo-10pcs-micro-limit-switch-kw12-3-ac-250v-5a
store_origin: AR
region: Argentina
---

# 5A current rating SPDT 1NO 1NC dual contact Compact 20x10.5x6.5mm size HiLetgo 10pcs Micro Limit Switch KW12-3 AC 250V 5A SPDT 1NO 1NC Micro Switch Normally Open Close Limit Switch with Roller Lever Arm Black

**Brand:** hiletgo
**Price:** AR$21822
**Availability:** ✅ In Stock

## Summary

> 🎯 Micro precision meets powerhouse performance — don’t let your projects settle for less!

## Quick Answers

- **What is this?** HiLetgo 10pcs Micro Limit Switch KW12-3 AC 250V 5A SPDT 1NO 1NC Micro Switch Normally Open Close Limit Switch with Roller Lever Arm Black by hiletgo
- **How much does it cost?** AR$21822 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/193693076-hiletgo-10pcs-micro-limit-switch-kw12-3-ac-250v-5a)

## Best For

- hiletgo enthusiasts

## Why This Product

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

## Key Features

- • **Robust & Reliable:** Rated for AC 125-250V and 5A current, built to handle demanding industrial and consumer electronics.
- • **Compact Powerhouse:** Small footprint (20x10.5x6.5mm) fits effortlessly into tight spaces without compromising performance.
- • **Dual-Mode Flexibility:** Seamlessly toggle between Normally Open and Normally Closed states for versatile applications.
- • **Roller Lever Advantage:** Smooth mechanical actuation with roller lever arm ensures consistent, low-friction operation.
- • **Precision Micro Control:** Experience ultra-responsive switching with a short stroke and fast-break contact action.

## Overview

The HiLetgo KW12-3 Micro Limit Switch is a compact, high-performance electrical switch featuring a roller lever arm and dual contact modes (Normally Open and Normally Closed). Rated for AC voltages up to 250V and 5A current, it delivers fast, reliable switching in a small 20x10.5x6.5mm package. Ideal for precision control in electronics, automotive, home appliances, and industrial automation, this 10-pack offers durable, panel-mountable switches with nickel-plated contacts and IP54 protection.

## Description

10Pcs Black KW12-3 Micro Roller Lever Arm Normally Open Close Limit Switches, with Roller Lever. Working principle: By external mechanical force transmission elements (by pins, buttons, levers, rollers, etc.) will be used to force action on a reed, producing reed instantaneous action when action shifted to the critical point, so moving contact with the fixed contact spring at the end of the action point fast on or off.When the force is removed on the drive components, action reed produce reverse action force transmission element reverse stroke when the action reaches a critical point reed, instantaneous reverse action. Package included： 10* KW12-3 Micro Roller Limit Switches

Review: Good buy - Worked as should. Perfect size for my application.
Review: Nice switch - Working flawlessly

## Features

- KW12-3 Roller Lever Arm Micro Limit Switch, Normally Open and Close Diamension: 20 x 10.5 x 6.5mm (L x W x H)
- Contact spacing is small,short stroke action,according to the power of small,fast-break.
- Rated voltage: AC 125V-250V; Current rating: 5A
- Application:Apply in A computer mouse, car mouse, automobile electronic products, communications equipment, military products, test instrument, gas water heater, gas burner, small home appliance, microwave oven, electric rice cooker, floating ball supporting equipment, medical equipment, building automation, electric tools, ect.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07X142VGC |
| Actuator Type | Lever |
| Best Sellers Rank | #8,313 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Limit Switches |
| Brand | HiLetgo |
| Brand Name | HiLetgo |
| Circuit Type | 2-way |
| Color | Black |
| Compatible Devices | computer mouse, car mouse, automobile electronic products, communications equipment, military products, test instrument, gas water heater, gas burner, small home appliance, microwave oven, electric rice cooker, floating ball supporting equipment, medical equipment, building automation, electric tools |
| Compatible with Vehicle Type | automobile |
| Connectivity Protocol | X-10 |
| Connector Type | Smt |
| Contact Material | Nickel-plated Metal |
| Contact Type | Normally Open |
| Control Method | Touch |
| Control Type | manual |
| Current Rating | 5 Amps |
| Customer Reviews | 4.7 out of 5 stars 687 Reviews |
| International Protection Rating | IP54 |
| Item Dimensions | 3.94 x 7.87 x 14.57 inches |
| Manufacturer | HiLetgo |
| Material Type | Plastic |
| Model | 3-01-1546 |
| Mounting Type | Panel Mount |
| Number of Items | 10 |
| Number of Positions | 2 |
| Operating Voltage | 250 Volts |
| Operation Mode | manual |
| Part Number | 3-01-1546 |
| Specification Met | Ip54 |
| Switch Type | Limit Switch |
| Terminal | Screw |
| Unit Count | 10.0 Count |
| Wattage | 1250 watts |

## Product Details

- **Brand:** HiLetgo
- **Connector Type:** Smt
- **Contact Type:** Normally Open
- **Current Rating:** 5 Amps
- **Item dimensions L x W x H:** 3.94 x 7.87 x 14.57 inches
- **Material:** Plastic
- **Operating Voltage:** 250 Volts
- **Operation Mode:** manual
- **Switch Type:** Limit Switch
- **Terminal:** Screw

## Images

![HiLetgo 10pcs Micro Limit Switch KW12-3 AC 250V 5A SPDT 1NO 1NC Micro Switch Normally Open Close Limit Switch with Roller Lever Arm Black - Image 1](https://m.media-amazon.com/images/I/51r8DLmZQ9L.jpg)
![HiLetgo 10pcs Micro Limit Switch KW12-3 AC 250V 5A SPDT 1NO 1NC Micro Switch Normally Open Close Limit Switch with Roller Lever Arm Black - Image 2](https://m.media-amazon.com/images/I/51icHkEmmKL.jpg)
![HiLetgo 10pcs Micro Limit Switch KW12-3 AC 250V 5A SPDT 1NO 1NC Micro Switch Normally Open Close Limit Switch with Roller Lever Arm Black - Image 3](https://m.media-amazon.com/images/I/51GM+0aI4JL.jpg)
![HiLetgo 10pcs Micro Limit Switch KW12-3 AC 250V 5A SPDT 1NO 1NC Micro Switch Normally Open Close Limit Switch with Roller Lever Arm Black - Image 4](https://m.media-amazon.com/images/I/61lg0CiLi8L.jpg)
![HiLetgo 10pcs Micro Limit Switch KW12-3 AC 250V 5A SPDT 1NO 1NC Micro Switch Normally Open Close Limit Switch with Roller Lever Arm Black - Image 5](https://m.media-amazon.com/images/I/51+Du5sRIiL.jpg)

## Questions & Answers

**Q: Can i use these with DC voltages?**
A: These switches are rated at 5/120 and 3/240 AC , contacts are silver plated which is good for AC but not for DC since platting is so thin and contact resistance so good you will end up with weld contacts, I have been using these switches on 30 ma up to 500ma no problem what so ever

**Q: I'm not an electronics person, so I'm not sure how to read the diagram; what are each of the terminals for? How do you wire this switch into a circuit**
A: It depends on the circuit which you will be wiring the switch into.  A wire needs to be connected to the (C)ommon connection opposite of the roller.  You then need to determine if you need the switch in the open or closed position when the switch is not activated.  I use the common and the normally open for my CNC milling machine limit switches.

**Q: What are the rollers made of, metal?**
A: no red plastic

**Q: Any recomendation of spade Wire Connector for it? 3.3mm is odd size.**
A: the connections are solder lugs, not too well suited for use with a female spade connector.  The switch dimensions dictate the size of the connections, and limit them so that, when installed, the connections won't contact a mounting surface.  Plus -- the nature of use, with something actuating the switch mechanically, somewhat dictates a more mechanically secure connection than you might expect with a push-on connector.  If you must use one, consider a short flexible wire pigtail soldered to each terminal, then add the connector of choice to the end of that wire for your chosen connector.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good buy
*by S***R on March 11, 2026*

Worked as should. Perfect size for my application.

### ⭐⭐⭐⭐⭐ Nice switch
*by C***S on February 28, 2026*

Working flawlessly

### ⭐⭐⭐⭐⭐ Good switches for the price
*by A***R on January 21, 2026*

So far so good! These come in a pack of 10 which makes this a pretty good value. I cannot attest to durability since they have not been in use for long enough, but they do seem solid. Response on these seems proper. I am using them in a slightly non-conventional way (as a button of sorts) but they are doing the job nicely.

## Frequently Bought Together

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-05-21*