Can i use these with DC voltages?

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

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

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.

Any recomendation of spade Wire Connector for it? 3.3mm is odd size.

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.

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Description

🔧 Elevate Your Projects with Precision Power!

COMPACT DESIGN - Space-saving dimensions fit seamlessly into any project.
RELIABLE RATINGS - Rated for AC 125V-250V, ensuring robust performance.
PRECISION PERFORMANCE - Experience swift action with short stroke mechanics.
VERSATILE APPLICATIONS - Perfect for a range of devices from home appliances to military tech.
USER FRIENDLY INSTALLATION - Easy to integrate into existing systems with minimal hassle.

The HiLetgo KW12-3 Micro Limit Switch is a compact and versatile component designed for a variety of applications, featuring a rated voltage of AC 125V-250V and a current rating of 5A. Its small dimensions and reliable performance make it ideal for both consumer electronics and industrial uses.

Reviews

J**V

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...

8.08.2025

M**R

Perfect switch, many uses (yet to be discovered)

I used a couple of these switches to activate a LED tape setup I created for a couple of closets that had no light and no power access. I used the LED tape on the inside of the door frame connected to a 3 battery pack (18650) and this switch nailed to the door frame where the door closing impacted the frame in the closed position. The switch gives an option for on open or on closed connections. The light comes on when the door is opened and goes off when the door is closed.I also replaced one of the contact switches inside my microwave that turns off the fan when the door is closed. (it was running when it shouldn't have been).Great product.

13.12.2023

E**7

All 10 worked and terminals can be soldered easily

Bench tested all 10 so that I don’t accidentally put a bad switch in a project. All 10 work properly. Terminals are sturdy enough to easily solder wires onto them without damaging the switch. I needed something that moves easily enough that a small servo can push the arm and it does.

31.12.2024

S**.

works well!

a little confuzing at first.. one of the prongs is for the ground in think and the other ons are for wether you want your motor, lights or what ever on when the switch is engaged (pushed in) or not

19.11.2024

R**9

Very nice little switches.

These little switches are very good. They produce a very distinct click when activated, which makes it easy to position them properly and likely ensures good internal mechanical and electrical contact. These switches are not very rugged, and I would not expose them unprotected to a harsh environment where they could be physically hit. They are, however, excellent switches for many DIY projects and are a great value.

14.03.2025

A**S

Perfect replacement for an old part

Perfect match for a Shinmei MQS-52! The price and quantity were a good deal.

3.03.2025

W**.

GREAT quality for a geat price

The switches work well for mt CNC. They are well-built and easy installation. II have spares if i ever need them.

10.12.2024

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