Pack of 10 KW4-3Z-3 Micro Limit Switch Lever Arm 28mm Long with 3 Terminals 250VAC/125VDC 5A

Pack of 10 KW4-3Z-3 Micro Limit Switch Lever Arm 28mm Long with 3 Terminals 250VAC/125VDC 5A

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Pack of 10 KW4-3Z-3 Micro Limit Switch Lever Arm 28mm Long with 3 Terminals 250VAC/125VDC 5A

Key Features

  • Quantity: 10 switches per pack
  • Model: KW4-3Z-3
  • Actuator: 28mm long hinge lever arm
  • Terminals: 3-pin configuration for Normally Open (N/O) and Normally Closed (N/C) circuits
  • Electrical Rating: 5A at 125VDC / 250VAC
  • Function: Snap-action switch designed to control the movement of mechanical parts in electrical systems.

Replaces / Cross-Reference Part Numbers

  • KW4-3Z-3

Compatibility & Fitment

  • Designed for use in a wide range of applications including appliances, 3D printers, CNC mills, and other general-purpose electrical automation projects.
  • Fitment depends on matching physical dimensions, actuator type (28mm lever), and electrical specifications (5A, 125/250V).

When to Replace

  • Switch fails to actuate or operates intermittently.
  • The circuit remains open or closed regardless of lever position.
  • Visible damage, such as a broken lever or cracked housing.
  • Audible click is absent or feels inconsistent during actuation.

Installation Tips

  • Disconnect all power to the equipment before beginning installation.
  • Identify and connect wires to the appropriate terminals: Common (C), Normally Open (NO), and Normally Closed (NC).
  • Ensure the mechanical component correctly engages and releases the lever without excessive force or over-travel.
  • Securely mount the switch body to prevent movement during operation.
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  • PRECISION CONTROL

    PRECISION CONTROL

    BlueStars's Limit switches feature 3 terminals and are primarily designed to control the movement of mechanical parts.
  • DURABLE BUILD

    DURABLE BUILD

    It is equipped with high-quality aluminum alloy and thermoplastic materials for superior conductivity and high reliability.
  • EASY TO INSTALL

    EASY TO INSTALL

    Installing a Limit Switch is easy for any DIY handyman and takes only 30 seconds.
  • SAVING SOLUTION

    SAVING SOLUTION

    BlueStars brings DIY solutions to help you deal with any trouble.
CONNECTING LIVES, ENERGIZING MOMENTS

CONNECTING LIVES, ENERGIZING MOMENTS

BlueStars - #1 source of high-quality electrical parts
Brand Model Number
Voltage AC 250V
Current 5A
Contact configuration SPDT
Electrical Life ≥10000 times
Actuator Action Momentary
Actuator Type Long straight hinge lever