ABB · MK Series

MKS1-10

Active
UL CSA CE

22mm 2-Position Key Switch 1NO

ABB MK Series Introduced circa 2005

ABB MK series 2-position key-operated selector.

Common Applications

Key switch for ABB panel mode protection. Prevents unauthorized mode changes. Supervisor holds the key. Used on VFD panels for local/remote control and on robot cells for teach/auto mode.

Specifications

Actuator Function
Maintained, key removable in both positions
Certifications
UL, CSA, CE
Contact Configuration
1NO
Cutout Diameter
22mm
IP Rating
IP66

Installation Quick Reference

Panel cutout: 22mm. Align the selector positions with the desired panel markings before tightening.

Contact blocks: Attach one contact block per position. Wire each to a separate PLC input for position feedback. A 2-position switch needs 1-2 blocks; 3-position needs 2-3.

Dimensions

Front 22mm cutout panel hole diameter Side panel contact ~45mm depth

Wiring Diagram

L T 11 12 NO (open) press ↓

Troubleshooting

Not responding to input

Check wiring continuity with a multimeter. Verify the contact block is properly seated. Inspect terminals for loose connections.

Where to Buy

Price range

$7.27 — $17.97

across 2 distributors

Quick Specs

Actuator Function
Maintained, key removable in both positions
Certifications
UL, CSA, CE
Contact Configuration
1NO
Cutout Diameter
22mm
IP Rating
IP66

What People Are Saying

“Key switch for ABB panel mode protection. Prevents unauthorized mode changes. Supervisor holds the key. Used on VFD panels for local/remote control and on robot cells for teach/auto mode.”

Reddit r/PLC 33 upvotes View thread →