Schneider Electric · Harmony XB5 Series

ZB5-AA1

Name: Schneider Electric ZB5-AA1
Brand: Schneider Electric
SKU: ZB5-AA1

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UL UL Listed — meets US safety standards. Required for NEC-inspected installations. CSA CSA Certified — meets Canadian safety standards. Required for installations in Canada. CE CE Marked — complies with EU directives (Low Voltage, Machinery, EMC).

Harmony XB5 Black Flush Push Button Head

Part number: ZB5 Harmony XB5 — 22mm plastic range - A Plastic body - A Flush round push button - 1 White actuator

Schneider Electric Harmony XB5 Series Introduced circa 2003

Schneider Electric ZB5-AA1 — Harmony 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

Actuator Shape The physical shape of the pressable surface.	Round
Actuator Type The button head style. Flush sits level with the bezel (prevents accidental presses). Extended protrudes for easy access.	Flush
Certifications Third-party safety certifications. UL = required for US NEC installations. CE = EU compliance. CSA = Canadian standards.	UL, CSA, CE
Color Button/actuator color. Green = start/go, Red = stop/emergency, Yellow = caution, Blue = reset (per IEC 60204-1).	Black
Contact Configuration The electrical switching arrangement.	Requires separate contact block
Cutout Diameter The hole size you drill in your panel to mount this button. 22mm is the most common industrial standard worldwide.	22mm
IP Rating IP66: Dust-tight and withstands powerful water jets from any direction. Standard for outdoor and washdown applications.	IP66
Material The bezel/body material. Metal bezels are more durable in harsh environments. Plastic is lighter and cheaper.	Plastic
Mechanical Life How many press cycles before mechanical failure. Higher is better — 10M cycles at 100 presses/day = 274 years.	10,000,000 cycles
Mounting Type How the button attaches to the panel. Panel mount is standard — installs through a cutout from the front.	Panel
Max Operating Temp Highest temperature the button is rated to operate in.	70°C
Min Operating Temp Lowest temperature the button is rated to operate in.	-25°C

You'll Also Need

This is a modular component. For a complete assembly, you may also need:

ZB4-BZ102 recommended

1NC contact block — for stop/safety functions

ZB4-BZ101 required

1NO contact block — for start/enable functions

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.

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.