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Description
KW4-3Z-3 Micro Limit Switch Lever Arm 28mm Long with 3 Terminals 250VAC/125VDC 5A - 10 PackKW4 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
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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Product Reviews
★★★★★ 5
Perfect day bag!
Color: Upgrade-black, Size: 15.6 Inch
Super convenient and lightweight. I used it for two back-to-back conferences last week and it was PERFECT for what I needed to tote along all day. Fits my regular sized computer (15-16 inch) and even held my water bottle (which is larger than a regular plastic water bottle).
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Reviewed in the United States on February 27, 2026
★★★★★ 5
Great backpack
Color: Upgrade-black, Size: 15.6 Inch
Stylish and lightweight for travel and work. Sturdy, comfortable straps. After trying about 5 different backpacks, I’m keeping this one.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Stylish, light (laptop, phone, notebook & pen) +
Color: Upgrade-apricot, Size: 15.6 Inch, Color: Upgrade-apricot, Size: 15.6 Inch
Perfect for work! I use it for laptop, charger and few items necessary at work. I have a few blocks to walk from parking to work location and this bag has replaced last backpack and purse. Much easier to carry one item than two or more. Plus, it has enough room if you need to use it for clothes and toiletries (road-trip) or carry-on.
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Reviewed in the United States on February 12, 2026
★★★★★ 4
Good quality
Color: Regular-light Pink, Size: 14 Inch
Good quality and value for your money. The fabric is soft and the right storage capacity for my 14” laptop!
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Reviewed in the United States on March 13, 2026
★★★★★ 5
Great value
Color: Upgrade-champagne Brown, Size: 17.3 Inch
Perfect backpack for traveling. Love how it looks, the compartments are great. Easy to store for your next travels.
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Reviewed in the United States on March 8, 2026