Schneider Electric · Harmony XALK Series

XALK174E

Active
UL CSA CE

Harmony XALK 1-Button Red E-Stop Station

Schneider Electric Harmony XALK Series Introduced circa 2003

Schneider XALK enclosed e-stop station.

Common Applications

Complete e-stop in a surface-mount enclosure. Yellow lid, red mushroom button, pre-wired NC contact. Mount anywhere — wall, post, machine frame. No panel needed. The standard remote e-stop for conveyor systems and large machines with multiple e-stop points.

Specifications

Actuator Function
Twist-release
Actuator Type
Mushroom 40mm
Certifications
UL, CSA, CE
Color
Red/Yellow
Contact Configuration
1NC
IP Rating
IP65
Mounting Type
Surface mount (enclosed)

Installation Quick Reference

Panel cutout: 22mm. Mount with the yellow backing plate visible (required by EN/ISO 13850).

Wiring: Wire NC contacts in series with the safety relay input channels. Use dual-channel wiring for SIL 3 / PLe applications. Never wire directly to a motor contactor.

Testing: Press the e-stop and verify the machine stops within the required time. Test the reset mechanism. Repeat monthly per EN/ISO 13850.

Dimensions

Wiring Diagram

L T 21 22 NC (closed) opens on press

Troubleshooting

E-stop won't reset (twist/pull doesn't release)

Check for debris in the mechanism. For twist-release: turn clockwise 45-90 degrees. For push-pull: pull straight out firmly. If the mechanism is stuck, the internal latch may be damaged — replace the entire head assembly.

Machine doesn't stop when e-stop is pressed

Critical safety issue. Immediately lock out the machine. Check wiring — NC contacts must be in series with the safety relay. Verify the safety relay is functioning. A broken wire in an NC circuit should cause a stop, so check for a wiring bypass.

Safety relay faults after e-stop reset

The safety relay detects a cross-fault between the two monitoring channels. Check that both NC contacts on the e-stop are switching simultaneously. One contact may be welded closed — replace the contact block.

Where to Buy

Price range

$37.35 — $143.76

across 2 distributors

Quick Specs

Actuator Function
Twist-release
Actuator Type
Mushroom 40mm
Certifications
UL, CSA, CE
Color
Red/Yellow
Contact Configuration
1NC

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