ZB5-AA1
ActiveHarmony XB5 Black Flush Push Button Head
Black flush push button head for Schneider Harmony XB5 series (plastic). 22mm cutout, IP66 rated. Economy plastic construction.
Common Applications
Black push button head from the Harmony XB5 range — Schneider's plastic-body economy line for cost-sensitive panel builds. The black color is used for general-purpose functions like reset, acknowledge, or auxiliary commands per IEC 60204-1. Found on building automation panels, simple conveyor controls, and OEM machine builds where the panel has dozens of buttons and cost per point matters. The plastic body is lighter than the metal XB4 series but still provides IP66 front-face protection. Requires a separate ZB5-AZ101 or ZB5-AZ102 contact block (note: XB5 contacts, not XB4).
Specifications
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Actuator Shape
The physical shape of the pressable surface.
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Round
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Actuator Type
The button head style. Flush sits level with the bezel (prevents accidental presses). Extended protrudes for easy access.
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Flush
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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, CSA, CE
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Color
Button/actuator color. Green = start/go, Red = stop/emergency, Yellow = caution, Blue = reset (per IEC 60204-1).
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Black
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Contact Configuration
The electrical switching arrangement.
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Requires separate contact block
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Cutout Diameter
The hole size you drill in your panel to mount this button. 22mm is the most common industrial standard worldwide.
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22mm
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IP Rating
IP66: Dust-tight and withstands powerful water jets from any direction. Standard for outdoor and washdown applications.
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IP66
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Material
The bezel/body material. Metal bezels are more durable in harsh environments. Plastic is lighter and cheaper.
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Plastic
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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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10,000,000 cycles
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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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Panel
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Max Operating Temp
Highest temperature the button is rated to operate in.
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70°C
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Min Operating Temp
Lowest temperature the button is rated to operate in.
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-25°C
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Specs with this icon are linked to the manufacturer's original source page
You'll Also Need
This is a modular component. For a complete assembly, you may also need:
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
Wiring Diagram
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
$1.71 — $10.41
across 4 distributors
Quick Specs
- Actuator Shape
- Round
- Actuator Type
- Flush
- Certifications
- UL, CSA, CE
- Color
- Black
- Contact Configuration
- Requires separate contact block
What People Are Saying
“Solid button for panel builds. Schneider Electric Harmony XB5 series is well-proven in the field. Standard 22mm mounting means easy replacement if needed.”
Learn More
Data Sources
Specifications and product data sourced from the following references.
