ZB4-BV033
ActiveHarmony XB4 Green LED Indicator Light 24V
Green LED pilot light head for Schneider Harmony XB4 series. 22mm cutout, 24V AC/DC, IP66 rated.
Common Applications
Pilot light used to show equipment running status. Green means running/power on per IEC 60204-1. Found on control panels for HVAC systems (compressor running), commercial kitchen equipment (fryer at temperature), water treatment plants (pump running), and manufacturing lines (machine in auto mode). The 24V AC/DC LED module is compatible with most PLC output voltages — connect directly to a PLC digital output to show process status.
Commonly Found On
Specifications
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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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Green
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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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LED Color
Color of the built-in LED indicator light.
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Green
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LED Voltage
The voltage required for the built-in LED. Must match your control circuit voltage (typically 24V DC or 230V AC).
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24V AC/DC
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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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Metal
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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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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:
Compatible Alternatives
These products are functionally equivalent cross-references from other manufacturers.
Installation Quick Reference
Panel cutout: 22mm. Insert from the front, secure with mounting nut.
LED module: Check the voltage rating matches your supply (typically 24V DC or 230V AC). Connect to PLC digital output or relay contact for status indication.
Color meaning (IEC 60204-1): Green = normal/running. Red = fault/danger. Yellow = warning/caution. Blue = mandatory action. White = neutral/general.
Dimensions
Troubleshooting
Light is dim or flickering
Check supply voltage matches the LED module rating. Low voltage causes dimming. If voltage is correct, the LED module is failing — replace it. LED modules have finite life (typically 50K-100K hours).
Light doesn't turn on
Verify voltage at the terminals with a multimeter. Check the PLC output or relay driving the light. LED modules are polarity-sensitive on DC circuits — try reversing the leads.
Where to Buy
Price range
$2.36 — $7.52
across 4 distributors
Quick Specs
- Certifications
- UL, CSA, CE
- Color
- Green
- Cutout Diameter
- 22mm
- IP Rating
- IP66
- LED Color
- Green
What People Are Saying
“Schneider Electric indicators are reliable. Match the LED voltage to your PLC output. Follow IEC 60204-1 color coding — your maintenance team will appreciate consistent standards.”
Learn More
Data Sources
Specifications and product data sourced from the following references.
ZB4BV033 Schneider Product Page
https://www.se.com/us/en/product/ZB4BV033/
Accessed March 30, 2026