Schneider Electric · Harmony XB4 Série

ZB4-BA4

Actif
UL CSA CE

Harmony XB4 Red Flush Push Button Head

Référence : ZB4 - B - A - 4
Schneider Electric Harmony XB4 Série Introduced circa 2003
Schneider Electric ZB4-BA4 — Harmony XB4 Red Flush Push Button Head

Red flush push button head for Schneider Harmony XB4 series. 22mm cutout, IP66 rated. Requires separate contact block (ZB4-BZ102 for 1NC).

Applications courantes

Standard stop button across industrial control panels. Found on commercial kitchen equipment alongside the green ZB4-BA3 (start), CNC machine tool auxiliary stops, and conveyor emergency halt stations. Red color follows IEC 60204-1 meaning stop or off. The 1NC contact configuration breaks the circuit when pressed — wire it in series with the motor contactor coil so pressing the button kills power to the motor.

Avertissement contrefaçon Medium risque

Same counterfeit risk as ZB4-BA3. Verify via Schneider QR code authentication.

Compatibilité

Compatible with all XB4 contact blocks. Fits XB2 legacy mounting holes.

Spécifications

Actuator Shape
Round
Actuator Type
Flush
Certifications
UL, CSA, CE
Color
Red
Contact Configuration
1NC (with ZB4-BZ102)
Cutout Diameter
22mm
IP Rating
IP66
Material
Metal
Mechanical Life
10,000,000 cycles
Mounting Type
Panel
Max Operating Temp
70°C
Min Operating Temp
-25°C

Les spécifications avec cette icône sont liées à la page source originale du fabricant

Vous aurez également besoin de

Ceci est un composant modulaire. Pour un assemblage complet, vous pourriez également avoir besoin de :

Référence rapide d'installation

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

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

Schéma de câblage

L T 21 22 NC (closed) opens on press

Dépannage

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.

Spécifications rapides

Actuator Shape
Round
Actuator Type
Flush
Certifications
UL, CSA, CE
Color
Red
Contact Configuration
1NC (with ZB4-BZ102)

Ce qu'en disent les utilisateurs

+

“Solid button for panel builds. Schneider Electric Harmony XB4 series is well-proven in the field. Standard 22mm mounting means easy replacement if needed.”

Reddit r/PLC 13 votes positifs Voir le fil →

Sources de données

Spécifications et données produit issues des références suivantes.

ZB4-BA4 via DigiKey

https://www.digikey.com/en/products/detail/schneider-electric/ZB4BA4/1638731

Consulté le March 28, 2026

Source

ZB4BA4 Schneider Product Page

https://www.se.com/us/en/product/ZB4BA4/

Consulté le March 30, 2026

Source