What Is A Key Lock Switch?

A key lock switch—officially called a key switch lock—is a power switch combined with a lock: a switch with security built in, which only the correct key can operate. The key provides physical authentication, ensuring that only authorized personnel can operate equipment or electrical circuits. The front of the device is a mechanical lock cylinder; the rear carries terminal pins that switch the connected circuit as the key rotates. Jin Tay has manufactured key switch locks in Taiwan since 1980.

What Does a Key Lock Switch Do?

A key lock switch puts an authorization layer on power control. Instead of a plain switch that anyone can flip, the circuit changes state only when an authorized key holder turns the key to a defined position. Industrial key switch locks are purpose-built for high durability, accurate switching control, and stable performance in demanding operating environments—which is why they are specified for equipment that must not be operated casually or by unauthorized users.

What Are the Types of Key Switch Locks?

How Are They Classified by Outer Diameter?

Standard outer diameters are 12mm, 16mm, and 19mm, with custom sizes available for OEM projects. Jin Tay was the first manufacturer in Taiwan to develop the 12mm key switch lock, a compact format that remains widely specified where panel space is tight.

How Are They Classified by Switching Configuration?

Configurations include 2-position switching (OFF/ON or ON/ON), 3-position switching (OFF/ON/ON, ON/OFF/ON, or ON/ON/ON), momentary spring-return positions, and special multi-position designs up to 8 positions. Terminal pins at the rear (up to 8) support single- or dual-circuit switching.

What About High-Security Options?

For applications with stricter requirements, Jin Tay offers the high-security model S2931. UL-certified options are available on part of the Key Switch Lock series, and selected models carry ingress protection rated per the IEC/EN 60529 standard (for example, the S305 series is rated IP65). Confirm coverage for your target model against its specification sheet.

Where Are Key Lock Switches Used?

Typical applications include mobility scooters, golf carts, and forklifts (power control), plus servers, industrial control boxes, vending machines, lawn mowers, and alarm systems. In each case the value is the same: operation is limited to whoever holds the key.

How Do You Choose a Key Lock Switch?

Specify four things: outer diameter (12/16/19mm), the switching configuration your circuits need, the number of terminal pins, and the key profile. Multiple switching configurations, key entry orientations, and key profile options are available, and wire-soldering processing can be added so parts arrive assembly-ready. Detailed electrical ratings are confirmed per model in the product specification sheet.

Frequently Asked Questions

1. What is a key lock switch?

A key lock switch—officially named a key switch lock—is a power switch combined with a lock. It is a switch with built-in security: only the matching key can turn it, so equipment or circuits operate only under authorization. Jin Tay has manufactured key switch locks in Taiwan since 1980.

2. Is a key lock switch the same as a cam lock?

No. They are different products and their parts are not interchangeable. A cam lock has a cam plate at the rear that physically latches a door or drawer. A key switch lock has terminal pins at the rear and switches an electrical circuit rather than latching anything.

3. What security features do key switch locks offer?

The core security feature is physical authentication: the key provides physical authentication, ensuring that only authorized personnel can operate equipment or electrical circuits. Jin Tay also offers the high-security model S2931, and UL-certified options are available on part of the Key Switch Lock series—confirm model coverage per specification sheet.

4. Can key switch locks be customized for OEM orders?

Yes. Multiple switching configurations, key entry orientations, and key profile options are available. Standard outer diameters are 12mm, 16mm, and 19mm, with up to 8 terminal pins, single- or dual-circuit switching, and wire-soldering processing. Contact Jin Tay with your application details for a tailored recommendation.

Next Step

Looking for a reliable key switch lock manufacturer? 

Jin Tay offers OEM/ODM services with over 45 years of lock manufacturing expertise. Contact our team for samples, specifications, or a custom quote.

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