Micro Limit Switch KW12 KW11 3Pin 5A 125V Hinge Lever SPDT 1NO 1NC 10 Pack type

Micro Limit Switch KW12 KW11 3-Pin 5A 125V Hinge Lever Actuator SPDT 1NO 1NC — 10-Pack for CNC Mill

⟡ DESCRIPTION

Keep your CNC machines, mill equipment and mechanical systems running precisely with this 10-pack of miniature limit switches engineered for both AC and DC control circuits. Each switch features a hinge lever actuator with a 1NO+1NC (SPDT) contact configuration, giving you the instant, reliable position detection your automated systems demand. Rated at 5A and AC 125V/250V, these compact 3-pin switches deliver dependable ON-OFF operation in a compact body measuring just 0.8" x 0.4" x 0.24" — small enough to fit in tight mechanical assemblies without sacrificing performance. The sturdy metal and plastic construction holds up to repeated actuation cycles in demanding workshop and industrial environments. These are also commonly referenced as a KW11 micro switch pin or plunger-style actuator replacement, so they serve a wide range of miniature snap action switch applications.

Each switch in this 10-piece set ships ready to install with a plug-in terminal connection style and a clear black body finish for easy identification inside your control panels. The momentary actuator action and SPDT wiring make integration into both new builds and replacement projects straightforward — simply connect your common, normally open and normally closed terminals and your circuit is ready. Whether you are retrofitting aging limit switches in a woodworking jig, a 3D printer frame or a conveyance line, this value pack means you always have a spare on hand. The lever size of 16 x 4mm and fixing hole diameter of 0.08" align with standard KW12 and KW11 mounting footprints, so swapping out worn switches requires no modification.

⟡ KEY FEATURES
🔹Reliable SPDT Contact Configuration — Each switch delivers a 1NO+1NC (SPDT) contact setup for versatile normally open and normally closed circuit control in one compact unit.
🔹Wide Voltage Compatibility — Rated AC 125V/250V at 5A, these switches handle a broad range of AC and DC control circuit voltages to suit diverse machine applications.
🔹Hinge Lever Actuator Design — The integrated hinge lever provides smooth, consistent actuation for precise position sensing in CNC mills, conveyance lines and mechanical assemblies.
🔹Compact Body for Tight Spaces — At just 2 x 1 x 0.6cm (0.8" x 0.4" x 0.24"), the miniature body fits neatly into space-constrained control panels and mechanical enclosures.
🔹Momentary Action for Instant Response — Momentary actuator action ensures the switch resets immediately upon lever release, providing accurate and repeatable position feedback every time.
🔹Standard KW12 KW11 Mounting Footprint — 0.08" fixing holes with a 0.4" center-to-center distance align perfectly with standard KW12 and KW11 mounting layouts for drop-in replacement.
🔹Durable Metal and Plastic Construction — A metal contact core housed in a plastic body balances electrical conductivity with lightweight durability across repeated high-cycle use.
🔹10-Pack Value Set — Ten identical switches in every order so you can complete a full project build, stock spares for maintenance, or replace multiple worn units in a single purchase.
⟡ SPECIFICATIONS
Model
KW12 KW11
Part Number
QXAD0141
Contact Configuration
1NO, 1NC (SPDT)
Actuator Type
Hinge Lever
Actuator Action
Momentary
Voltage and Current
AC 125V/250V, 5A
Terminals
3-Terminal, Plug-In
Switch Body Size
2 x 1 x 0.6cm / 0.8" x 0.4" x 0.24" (L x W x H)
Lever Size
16 x 4mm / 0.63" x 0.16" (L x W)
Fixing Hole Diameter
0.2cm / 0.08"
Hole Center Point Distance
1cm / 0.4"
Body Color
Black
Material
Metal, Plastic
Net Weight
22g
Operation Mode
ON-OFF
Package Quantity
10 Pieces
⟡ PRO TIPS
01
Before wiring, use a multimeter set to continuity mode to verify the common (COM), normally open (NO) and normally closed (NC) terminals on each switch — this confirms the SPDT contacts are functioning correctly before installation.
02
When mounting in a CNC or mill application, position the hinge lever so it makes smooth, full contact with the actuating surface at the exact point where you need the machine to stop or change direction — a partial lever strike causes inconsistent triggering.
03
For DC control circuits, observe polarity at the terminals and keep lead lengths as short as practical to reduce voltage drop across the 5A rated contacts, especially in low-voltage logic systems.
04
Store unused switches from this 10-pack in a dry, low-humidity environment — moisture ingress into the metal contacts over long storage periods can cause resistance buildup and unreliable switching.
05
When replacing a worn limit switch using this KW12 or KW11 footprint, photograph the original wiring layout before disconnecting any leads so you can replicate the NO, NC and COM connections exactly on the new unit.
⟡ IDEAL FOR
◆CNC machine position sensing and end-stop control◆Mill and lathe moving part position detection◆3D printer frame end-stop switch replacement◆Conveyance line and conveyor belt limit control◆DIY automation and robotics projects◆Woodworking jig and fixture position sensing◆Door position detection in mechanical assemblies◆Control panel circuit switching and logic triggering◆Industrial machine tool safety interlock systems◆Replacement for worn KW12 or KW11 limit switches◆Electronic prototyping and hobbyist maker builds◆Small appliance and mechanical system switch retrofit
⟡ SHIPPING & RETURNS
Shipping: Most orders ship within 2-3 business days. Handling time can vary by item, so please check the estimated delivery date shown on this page before placing your order.Shipping Cost: Most of our items ship free with no hidden fees. Some heavy or oversized items may have a shipping charge, so please check the shipping cost shown on this listing before placing your order.Returns: Most of our items come with free 30-day returns. Some items are not eligible for return, so please check the return policy shown on this listing before placing your order.
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