Lifetime Warranty
[Lifetime Warranty] KW4-3Z-3 Micro Limit Switch Lever Arm 28mm Long with 3 Terminals 250VAC/125VDC 5A | Pack of 10
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$12.32
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$14.17
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KW4-3Z-3 Micro Limit Switch
Key Features
- 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
- KW11-3Z
- KW11-3Z-3
- SS-01
- SS-5
- V-15-1C25
- D2SW-3L2H
- WS2-WBZ3L2B5
- LXW5-11G1
- Z-15GW22-B
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.
-
PRECISION CONTROL
BlueStars's Limit switches feature 3 terminals and are primarily designed to control the movement of mechanical parts. -
DURABLE BUILD
It is equipped with high-quality aluminum alloy and thermoplastic materials for superior conductivity and high reliability. -
EASY TO INSTALL
Installing a Limit Switch is easy for any DIY handyman and takes only 30 seconds. -
SAVING SOLUTION
BlueStars brings DIY solutions to help you deal with any trouble.
CONNECTING LIVES, ENERGIZING MOMENTS
BlueStars - #1 source of high-quality electrical parts
Color
Green
Material
Plastic / Metal
Actuator Type
Short Straight Hinge Lever — Momentary / Snap Action
Lever Arm Length
28mm (1.1")
Lever Width
4mm (0.16")
Contact Configuration
SPDT (1NO + 1NC) — 3 Terminals
Rated Voltage
125V / 250V AC | 125V DC
Rated Current
5A
IP Rating
IP40 (Dustproof)
Body Size (L x W x H)
20 x 10 x 7mm (0.8" x 0.4" x 0.27")
Mounting Hole Diameter
~2mm (0.08")
Mounting Hole Center Distance
~10mm (0.4")
Operation Speed
0.1mm/s – 1m/s
Mechanical Life
1,000,000 operations min.
Certifications
UL