---
product_id: 193693076
title: "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$61677"
currency: ARS
in_stock: true
reviews_count: 11
category: "Hi Letgo"
url: https://www.desertcart.com.ar/products/193693076-10pcs-micro-limit-switch-kw12-3-ac-250v-5a-spdt
store_origin: AR
region: Argentina
---

# 5A current rating SPDT 1NO 1NC dual circuit Roller lever arm actuator 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$61677
**Availability:** ✅ In Stock

## Summary

> 🎯 Switch to precision — never miss a beat with HiLetgo’s micro limit switches!

## Quick Answers

- **What is this?** 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$61677 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/193693076-10pcs-micro-limit-switch-kw12-3-ac-250v-5a-spdt)

## 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

- • **Multi-Industry Ready:** Trusted in automotive, medical, home appliances, and automation—stay ahead with proven reliability.
- • **Compact & Durable Build:** Sleek 20x10.5x6.5mm size with nickel-plated contacts ensures longevity and space-saving integration.
- • **Robust 5A Current Handling:** Handles up to 250V AC and 5 amps for demanding industrial and home applications.
- • **Versatile Dual Circuit Design:** SPDT configuration supports both Normally Open and Normally Closed setups.
- • **Precision Fast-Response Switch:** Experience ultra-short stroke action for instant, reliable triggering.

## Overview

The HiLetgo KW12-3 Micro Limit Switch pack includes 10 compact, roller lever arm switches rated for 250V AC and 5A current. Featuring a SPDT circuit with Normally Open and Normally Closed contacts, these switches deliver fast, reliable actuation in a durable, nickel-plated design. Ideal for diverse applications from automotive electronics to home appliances and industrial automation, they combine precision engineering with versatile functionality to keep your projects running flawlessly.

## 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 switches for the price - 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.
Review: As advertised and seem fairly sturdy - Worked like a charm for my automotive needs and as advertised. I just wish you didn't have to buy a pack of 10 and had the option of buying a much lesser quantity. I guess I'll hold onto the extras as spares, just in case they wind up not being durable. Only time will tell...

## 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 | #3,944 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Limit Switches |
| Brand | 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 |
| 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 |
| Date First Available | August 30, 2019 |
| International Protection Rating | IP54 |
| Item Weight | 1.13 ounces |
| Item dimensions L x W x H | 3.94 x 7.87 x 14.57 inches |
| Item model number | 3-01-1546 |
| Manufacturer | HiLetgo |
| Number of Items | 10 |
| Number of Positions | 2 |
| Operating Voltage | 250 Volts |
| Operation Mode | manual |
| Product Dimensions | 3.94 x 7.87 x 14.57 inches |
| Terminal | Screw |
| Unit Count | 10.0 Count |
| Vehicle Service Type | automobile |
| 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

![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)

## 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 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.

### ⭐⭐⭐⭐⭐ As advertised and seem fairly sturdy
*by J***V on August 8, 2025*

Worked like a charm for my automotive needs and as advertised. I just wish you didn't have to buy a pack of 10 and had the option of buying a much lesser quantity. I guess I'll hold onto the extras as spares, just in case they wind up not being durable. Only time will tell...

### ⭐⭐⭐⭐⭐ Small size, both NO and NC options
*by M***Y on October 14, 2025*

These worked perfect for LED lights I installed under a counter where shelves are too dark to find anything. Just put the switch inline with the power to the lights and mount it in the door frame so the switch is pressed when the door is closed. I used strong double sided tape to mount this switch to the frame. Worked perfectly.

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-03-04*