10-Pack Micro Limit Switch Roller Lever SPDT Snap Action 3-Pin

10-Pack Micro Roller Lever Limit Switches — SPDT Snap Action, 3-Pin

Upgrade your electronics projects with this convenient 10-piece set of micro limit switches featuring a roller lever arm and SPDT (Single Pole Double Throw) snap-action mechanism. Model KW11-3Z-2, these compact yet robust switches deliver fast, precise actuation — perfect for hobbyists, engineers, and professionals alike.

Key Features

• Snap-Action Mechanism: Delivers instant, reliable on/off switching with crisp tactile feedback every time.
• Roller Lever Arm: Built-in roller reduces friction and wear, extending switch lifespan significantly.
• SPDT 3-Pin Configuration: Versatile common, normally open (NO), and normally closed (NC) terminals for maximum wiring flexibility.
• Wide Voltage Range: Rated for AC 125V–250V, 5A current — suitable for a broad range of low-voltage applications (below 50V AC or 75V DC).
• Wide Operating Temperature: Performs reliably from -40°C to 70°C, ideal for demanding environments.
• Compact Size: Measures just 20 × 10 × 6 mm (L × W × H) — fits easily into tight spaces.
• Durable Plastic Housing: Lightweight yet sturdy construction for long-lasting performance.
• 2-Year Warranty: Backed by a 2-year manufacturer warranty for added peace of mind.
• CCC Certified: Meets China Compulsory Certification standards.

How It Works

An external mechanical force is transmitted through the roller lever to activate the internal spring-loaded reed. When the actuating force reaches the critical threshold, the reed snaps to the action point, instantly switching the contact state (open or closed). Once the force is removed, the reed springs back, reversing the switch state — providing reliable, repeatable snap-action operation.

Common Applications

• Computer mice and input devices
• Automotive and vehicle electronics
• Communication equipment
• Gas boilers and burners
• Small household appliances
• Microwave ovens and electric rice cookers
• Medical equipment
• Building automation systems
• Electric tools and power equipment
• Test instruments

Specifications

What's in the Box

• 10 × Micro Roller Lever Limit Switches (KW11-3Z-2)

Learn more: OSHA on personal protective equipment

Frequently Asked Questions

Q: What does SPDT mean on a micro limit switch?

A: SPDT stands for Single Pole Double Throw. It means the switch has one common (COM) terminal that can connect to either a Normally Open (NO) or Normally Closed (NC) terminal. This gives you maximum flexibility to configure the switch for your specific circuit — whether you need it to complete a circuit when triggered or break a circuit when triggered.

Q: What is the maximum current and voltage these micro limit switches can handle?

A: The KW11-3Z-2 micro limit switches are rated for up to 5A of current at AC 125V–250V. They are also compliant for low-voltage applications below 50V AC or 75V DC, making them versatile for a wide variety of electronic and automation projects.

Q: Are these micro limit switches suitable for outdoor or high-temperature environments?

A: Yes — these switches are designed to operate reliably across a wide temperature range of -40°C to 70°C, making them suitable for demanding environments including automotive, industrial, and outdoor automation applications. However, they are not rated as waterproof or weatherproof, so additional enclosure protection is recommended for fully outdoor use.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.