---
product_id: 715603524
title: "10 Pces 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: "$U1231"
currency: UYU
in_stock: true
category: "Hi Letgo"
url: https://www.desertcart.uy/products/715603524-10-pces-micro-limit-switch-kw12-3-ac-250v-5a
store_origin: UY
region: Uruguay
---

# 5A current rating SPDT 1NO 1NC versatile switching Compact 20x10.5x6.5mm size 10 Pces 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:** $U1231
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your projects with micro precision and power-packed performance!

## Quick Answers

- **What is this?** 10 Pces 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?** $U1231 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/715603524-10-pces-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

- • **Dual Mode Flexibility:** Seamlessly toggle between Normally Open and Normally Closed states to fit any application.
- • **Compact & Durable Design:** Sleek black micro switch with roller lever arm fits tight spaces without compromising reliability.
- • **Precision Instant Action:** Experience lightning-fast switching with minimal contact spacing for ultra-responsive control.
- • **Robust 5A Power Handling:** Supports up to 250V AC and 5 Amps, perfect for demanding electronic and automation setups.
- • **Versatile Industry Applications:** Trusted across automotive, medical, home appliances, and military-grade equipment for ultimate dependability.

## Overview

The HiLetgo KW12-3 Micro Limit Switch is a compact, high-performance SPDT switch featuring a roller lever arm, rated for 250V AC and 5A current. Designed for rapid, precise switching with Normally Open and Normally Closed contacts, it fits seamlessly into diverse applications from automotive electronics to home appliances and industrial automation. Each pack includes 10 durable black switches engineered for reliability and versatility.

## Description

10pcs Black KW12-3 Micro Roll Lever Arm Usually Open Close Limit Switches, with Roller Lever. Working principle: through external mechanical force transmission elements (by pins, buttons, levers, rollers, etc.) will be used to force action on a pick, producing instant action of the pick when the action is shifted to the critical point, so that the mobile contact with the fixed contact spring at the end of the action point quickly on or off. When the force is removed in the drive components, the action pick produces the reverse action force transmission element, reverse stroke when the action hits a critical point pick, instant reverse action. Package included: 10*KW12-3 Micro Roller Limit Switches

## Features

- Micro lever arm roller limit switch KW12-3, normally open and closed Diameter: 20 x 10.5 x 6.5mm/0.79 x 0.41 x 0.26 inch (L x W x H)
- Contact spacing is small and short-acting, according to the power of the small and fast brake.
- Rated Voltage: AC 125V-250V; Rated Current: 5A
- Application: Apply to a computer mouse, car mouse, automotive electronic products, communication equipment, military products, test instrument, gas water heater, gas burner, small appliances, microwave oven, electric rice cooker, floating ball holder equipment, medical equipment, building automation, power tools, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07X142VGC |
| Brand Name | HiLetgo |
| Circuit Type | 1-way |
| Color | black / black |
| Compatible Devices | computer mouse, car mouse, automotive electronic products, communication equipment, military products, test instrument, gas water heater, gas burner, small household appliances, microwave oven, rice cooker, floating ball support equipment, medical equipment, building automation, power tools |
| Connector Type | Smt |
| Contact Type | Normally Open |
| Current Rating | 5 Amps |
| Customer Reviews | 4.7 4.7 out of 5 stars (700) |
| International Protection Rating | IP54 |
| Item Dimensions | 10 x 20 x 37 centimeters |
| Manufacturer | HiLetgo |
| Material Type | Plastic |
| Model | 3-01-1546 |
| Mounting Type | PCB Mount |
| Number of Items | 10 |
| Number of Positions | 2 |
| Operating Voltage | 250 Volts (AC) |
| Operation Mode | manual |
| Part Number | 3-01-1546 |
| Switch Type | Limit Switch |
| Terminal | Spdt |
| Unit Count | 10.0 Count |
| Wattage | 1250 watts |

## Product Details

- **Connector type:** Smt
- **Contact type:** Normally Open
- **Current rating:** 5 Amps
- **Operating voltage:** 250 Volts (AC)
- **Operation mode:** manual

## Images

![10 Pces 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.

## Frequently Bought Together

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-10-02*