KT50-BLU2
ActiveK50 Touch Button with IO-Link
Turck K50 capacitive touch button — no moving parts.
Common Applications
Capacitive touch sensor in a standard K50 housing — no mechanical button to wear out. Works through gloves up to 3mm. IP69K rated for food and pharma washdown. IO-Link enabled for smart factory integration. The next generation of industrial push buttons — no moving parts means unlimited cycle life.
Specifications
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Certifications
Third-party safety certifications. UL = required for US NEC installations. CE = EU compliance. CSA = Canadian standards.
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UL, CE, ECOLAB
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IP Rating
IP69K: Dust-tight and withstands high-pressure, high-temperature steam jets. Built for food processing washdown environments.
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IP69K
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Mechanical Life
How many press cycles before mechanical failure. Higher is better — 10M cycles at 100 presses/day = 274 years.
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Unlimited (no moving parts)
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Mounting Type
How the button attaches to the panel. Panel mount is standard — installs through a cutout from the front.
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M30 threaded
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Protocol
The wireless communication standard. BLE = short range, phone direct. Zigbee = mesh network, needs hub. Z-Wave = mesh, needs hub. WiFi = direct, higher power.
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IO-Link
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Voltage
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10-30V DC
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Installation Quick Reference
Panel cutout: 22mm. Insert from the front of the panel, secure with mounting nut from behind (tighten to 2-3 Nm).
Contact block: Snap or screw the contact block onto the rear of the button body. Ensure the contact block orientation matches the wiring diagram — NO terminals are usually marked.
Wiring: Use 0.5-2.5mm² stranded wire with ferrules. Tighten screw terminals to 0.8 Nm. Test the button function before energizing the circuit.
Dimensions
Troubleshooting
Button doesn't respond when pressed
Check the contact block first — it's the most common failure point. Test continuity across the NO or NC terminals with a multimeter. If no click is felt, the return spring in the head may be broken.
Works intermittently
Contact block contacts are pitted or burned. Replace the contact block — don't try to file the contacts. Check if the rated cycle count has been exceeded.
Button feels mushy or doesn't click
The spring return mechanism in the button head is worn. Replace the head. The contact block can usually be reused if it tests OK.
Where to Buy
Price range
$37.65 — $59.51
across 2 distributors
Quick Specs
- Certifications
- UL, CE, ECOLAB
- IP Rating
- IP69K
- Mechanical Life
- Unlimited (no moving parts)
- Mounting Type
- M30 threaded
- Protocol
- IO-Link
What People Are Saying
“No moving parts means unlimited life and IP69K washdown rating. The future of industrial HMI. IO-Link gives you smart diagnostics too.”