In the world of industrial automation and control systems, reliability, visibility, and durability are paramount. The Schneider Electric Harmony XB4BVB4 22mm red LED pilot light embodies all these qualities, making it a preferred choice among engineers, control panel designers, and maintenance professionals. As part of Schneider Electric’s renowned Harmony XB4 metal range, this pilot light delivers not only superior performance but also a long-lasting solution to industrial signaling challenges.
This comprehensive guide explores everything you need to know about the Schneider Electric Harmony XB4BVB4—from its design and technical specifications to installation, applications, and certifications—so you can make an informed decision for your control system needs.
Understanding the Schneider Electric Harmony XB4BVB4
The Schneider Electric Harmony XB4BVB4 is a 22mm panel-mounted red LED pilot light that operates on 24V AC/DC. It features a chrome-plated metal bezel, a plain red lens, and a built-in protected LED module that offers exceptional brightness and longevity. The device is a complete, sealed assembly, designed for rugged industrial environments and backed by Schneider’s legacy of precision engineering.
Key Features at a Glance
- Model: Harmony XB4BVB4
- Type: 22mm LED pilot light
- Color: Red (steady light)
- Voltage: 24V AC/DC
- Bezel Material: Chromium-plated metal
- Lens Type: Plain
- Ingress Protection: IP66, IP67, IP69K rating
- Standards Compliance: IEC 60947-5-1 / UL 508
- Mounting Hole: Ø22.5mm
With its universal LED block, the Schneider Electric Harmony XB4BVB4 ensures consistent illumination across all colors while simplifying maintenance and inventory management.
Why Choose Schneider Electric Harmony XB4BVB4 for Industrial Panels
1. Long-Lasting Illumination
The Schneider Electric Harmony XB4BVB4 boasts an impressive service life of approximately 100,000 hours, ensuring minimal downtime and reduced replacement costs. Its integrated LED is protected and non-replaceable, eliminating maintenance challenges common with older incandescent lamps.
2. Robust and Durable Construction
Built with a chromium-plated zinc-alloy bezel, the pilot light is engineered to resist corrosion, mechanical shocks, and high-pressure washdowns. Its IP69K rating guarantees water-tight and dust-tight performance, even in the harshest industrial environments such as food processing plants and outdoor panels.
3. Energy Efficiency and Brightness
The Harmony XB4BVB4’s LED technology draws just 18 mA of current, providing bright and consistent illumination while keeping energy consumption low. The optimized light diffusion ensures clear visibility even in high-glare or low-light conditions.
4. Simplified Mounting and Wiring
Installation is quick and secure. The unit fits standard 22.5mm panel cutouts, comes with a zamak metal locking collar, and accommodates screw-clamp terminals supporting wire sizes up to 2.5mm². Optional Faston tabs or plug-in adapters offer flexibility for various wiring preferences.
Technical Specifications of Schneider Electric Harmony XB4BVB4
|
Parameter |
Specification |
|
Supply Voltage |
24V AC/DC ±10% |
|
Rated Current |
~18mA |
|
Power Consumption |
30–50 mW |
|
Mounting Hole |
Ø22.3–22.7mm (nominal 22.5mm) |
|
Panel Thickness |
1–6mm |
|
Dimensions (HxWxD) |
47×30×54mm |
|
Weight |
0.08kg |
|
Operating Temperature |
-40°C to +70°C |
|
Storage Temperature |
-40°C to +85°C |
|
Protection Rating |
IP66 / IP67 / IP69K |
|
NEMA Rating |
4X, 13 |
|
Insulation Voltage |
250V (Ui) |
|
Impulse Withstand Voltage |
4kV |
|
Vibration Resistance |
5g (12–500Hz) |
|
Shock Resistance |
50g (11ms) |
|
Electrical Standards |
IEC/EN 60947-5-1, UL 508, CSA C22.2 No.14 |
The Schneider Electric Harmony XB4BVB4 meets stringent international standards, ensuring safety, reliability, and environmental responsibility.
Key Features and Innovations
Universal LED Block Design
Schneider Electric’s innovative universal LED block system allows a single LED module design to work across multiple color lenses. This design not only enhances brightness and color uniformity but also simplifies component replacement and reduces inventory complexity.
High-Pressure Resistance
The Schneider Electric Harmony XB4BVB4 can withstand washdowns at 7×10⁶ Pa (around 70 bar) and 55°C water temperature at 0.1m distance—making it ideal for food, beverage, or pharmaceutical manufacturing facilities where hygiene and cleaning are critical.
Mercury-Free and Eco-Designed
As part of Schneider Electric’s Green Premium initiative, this pilot light is mercury-free, RoHS-compliant, and REACH-certified, aligning with global sustainability standards.
Compliance and Certifications
The Schneider Electric Harmony XB4BVB4 adheres to multiple international safety and environmental standards:
- IEC/EN 60947-5-1 & 60947-5-4: Low-voltage control circuit compliance
- UL 508 & CSA C22.2 No.14: North American safety standards
- RoHS & REACH Compliance: Free from restricted hazardous substances
- Green Premium Label: Certified environmentally responsible product
- NEMA 4X, 13 & IP69K: Ensures superior protection against dust, corrosion, and water ingress
This compliance assures users that the Harmony XB4BVB4 is built to the highest industrial safety and environmental benchmarks.
Alternative Models in the Harmony XB4 Range
The Schneider Electric Harmony XB4 family includes a variety of LED pilot lights designed for different signaling needs:
|
Model |
Color |
Voltage |
|
XB4BVB1 |
White |
24V AC/DC |
|
XB4BVB3 |
Green |
24V AC/DC |
|
XB4BVB5 |
Orange |
24V AC/DC |
|
XB4BVB6 |
Blue |
24V AC/DC |
All variants share the same 22mm metal bezel, universal LED module, and robust construction—allowing easy standardization across your control panels.
Compatible Accessories
The Schneider Electric Harmony XB4BVB4 can be paired with several accessories to enhance functionality:
- Contact Blocks (ZB4 series): 1NO, 1NC, or combination configurations for signaling customization.
- Mounting Accessories: Comes with a metal collar and integrated gasket; optional extension rings and guards available.
- Wiring Accessories: Screw-clamp terminals as standard; Faston or plug-in connectors optional.
- Legend Plates: Optional identification plates for clearer labeling in complex panels.
Mounting and Installation Guide
Installing the Schneider Electric Harmony XB4BVB4 is straightforward. Follow these steps for a secure and sealed installation:
- Drill the Panel: Cut a 22.5mm hole (Ø22.3–22.7mm tolerance) into the control panel.
- Insert the Unit: Place the pilot light from the front, ensuring the gasket is properly seated.
- Secure the Collar: Tighten the rear zamak collar by hand to clamp the panel securely. Avoid over-torqueing.
- Wire Connections: Connect cables to screw terminals (up to 2×1.5mm² with ferrules or 2×2.5mm² bare).
- Verify Sealing: Confirm the unit sits flush and the gasket is compressed to maintain IP69K protection.
Adequate clearance is recommended—≥40mm above, ≥30mm below, and ≥45mm side-to-side—to ensure proper wiring access.
Applications of Schneider Electric Harmony XB4BVB4
The Harmony XB4BVB4 red LED pilot light is an indispensable signaling device across a wide range of applications, including:
- Industrial Control Panels: Indicating fault, stop, or emergency status.
- Automation Systems: Providing clear visual alerts during process interruptions.
- Motor Starters & MCCs: Signaling motor stop or trip conditions.
- HVAC Control Units: Displaying fault or maintenance alerts.
- Food & Beverage Machinery: Maintaining reliable visibility under high washdown conditions.
Pilot lights like the Schneider Electric Harmony XB4BVB4 serve as the operator’s window into machine status—acting like a traffic light for industrial safety. Red signifies stop, danger, or fault, ensuring immediate recognition and response.
Performance and Reliability in Harsh Environments
One of the main reasons professionals choose the Schneider Electric Harmony XB4BVB4 is its unmatched durability in demanding environments. With vibration resistance up to 5g and shock resistance up to 50g, this pilot light ensures consistent performance even in heavy-duty machinery or mobile equipment.
Its ability to operate in a temperature range of -40°C to +70°C also means it can be deployed in freezing outdoor installations or hot industrial enclosures without compromise.
Maintenance and Safety Considerations
The maintenance-free LED and sealed design mean operators can rely on the Schneider Electric Harmony XB4BVB4 for years without replacements. However, periodic inspection for terminal tightness and gasket condition ensures sustained IP protection.
Its Class I protection (grounded metal body) adds another layer of safety by reducing electric shock risk in control enclosures.
Environmental Commitment and Green Premium Label
As part of Schneider Electric’s Green Premium Program, the Harmony XB4BVB4 not only meets stringent efficiency standards but also contributes to environmental responsibility. The unit is free of hazardous substances and compliant with WEEE recycling directives, supporting the global shift toward sustainable industrial design.
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Conclusion: The Harmony of Safety, Durability, and Efficiency
The Schneider Electric Harmony XB4BVB4 22mm red LED pilot light stands as a benchmark in industrial signaling technology. With its metal bezel, universal LED design, robust sealing, and compliance with international standards, it offers unbeatable reliability and performance for modern control panels.
Whether you are designing a new control system or upgrading an existing one, this pilot light provides clarity, efficiency, and peace of mind.
For engineers and integrators seeking more information or to purchase the Schneider Electric Harmony XB4BVB4, visit the product page here to explore pricing and compatible accessories.
