KW3A-16A Micro Switch | Appliance Door Safety Limit Switch

KW3A-16A Normally Open Micro Switch for Coffee Machines, Microwave Ovens & More

Keep your household appliances running safely and reliably with this KW3A-16A Micro Switch. Designed as a high-quality replacement or spare part, this normally open (NO) limit travel switch is compatible with a wide range of appliances including coffee machines, microwave oven doors, and other household equipment that require precise switching action. Whether you're a DIY repair enthusiast or a technician, this compact and dependable switch is an essential component to have on hand.

Key Features

• Type: Micro Switch – Normally Open (NO) configuration
• Model: KW3A-16A
• Rating: 16A for robust, reliable switching performance
• Material: Durable plastic housing built to withstand repeated use
• Function: Safety limit / travel switch — ideal for door interlock and position-sensing applications
• Compatible With: Coffee machines, microwave oven doors, and a wide variety of household appliances
• Quantity: 1 piece per order

Why Choose the KW3A-16A Micro Switch?

This micro switch provides a precise and responsive trigger point, making it perfect for door safety interlock mechanisms found in microwave ovens, coffee makers, and similar appliances. Its normally open design ensures the circuit remains inactive until the switch actuator is engaged — a critical safety feature in any appliance door application. The 16A current rating ensures it can handle the electrical demands of most standard household devices.

What Is a Micro Switch?

A micro switch (also known as a miniature snap-action switch) is an electromechanical device that operates with very little physical force, making it ideal for safety and limit switching applications. They are widely used in appliances, industrial equipment, and electronic devices. Learn more about electrical component safety standards from the U.S. Consumer Product Safety Commission (CPSC).

Compatible Applications

• Microwave oven door interlock systems
• Coffee machine safety switches
• Household appliance limit/travel switching
• DIY electronics and repair projects
• Industrial and automation equipment

Made in Mainland China.

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Frequently Asked Questions

Q: What appliances is the KW3A-16A micro switch compatible with?

A: The KW3A-16A micro switch is commonly used in coffee machine safety mechanisms, microwave oven door interlocks, and a variety of household appliances that require a limit or travel switch. It is also suitable for DIY repair and electronics projects.

Q: What does "normally open" mean for this micro switch?

A: "Normally open" (NO) means that the switch's electrical circuit is open (no current flows) in its default, unactuated state. When the actuator is pressed or triggered — such as when a microwave door closes — the circuit completes and the appliance can operate. This is a standard safety design for appliance door interlock systems.

Q: What is the current rating of this micro switch?

A: This switch is rated at 16A, making it suitable for handling the electrical load of most standard household appliances. Always ensure the switch rating meets or exceeds the requirements of your specific device before installation.

Q: How many switches are included in one order?

A: Each order includes 1 piece of the KW3A-16A micro switch. If you need multiple units, simply adjust the quantity before adding to your cart.