UV Lamp Replacement Guide for Fusion / Heraeus / Excelitas Systems
Field Example: Fusion Bulb Type
A coating application using a Fusion UV system experienced incomplete curing despite normal operation. The issue was traced to using an incorrect bulb type for the application. Switching to the appropriate bulb restored curing performance.
UV Lamp Replacement Guide for Fusion / Heraeus / Excelitas Systems
Fusion UV systems (now part of Heraeus Noblelight and Excelitas Technologies) are widely used in industrial curing applications, particularly in printing, coatings, and advanced manufacturing.
Because these systems span multiple generations and brand transitions, identifying and replacing the correct UV lamp can be more complex than standard OEM systems.
This guide explains how to identify, match, and replace UV lamps used in Fusion, Heraeus, and Excelitas systems.
Understanding Fusion / Heraeus / Excelitas UV Systems
Fusion UV systems are best known for their microwave-powered UV technology, which differs from traditional electrode-based UV lamps.
- Microwave-powered UV lamps (electrodeless)
- High-intensity UV output
- System-specific bulb and reflector configurations
- Modular lamp and cassette designs
Over time, these systems have been manufactured and supported under multiple brands, including Fusion UV, Heraeus Noblelight, and Excelitas.
This means part numbers, naming conventions, and availability may vary depending on system age.
How to Identify a Fusion / Heraeus UV Lamp
Correct identification is critical, especially for electrodeless systems.
1. Check the Bulb or Cassette Markings
Look for:
- Bulb type (e.g., H bulb, D bulb, V bulb)
- System model references
- Any etched or labeled identifiers
Fusion systems often use bulb designations rather than traditional part numbers.
2. Identify the System Type
- Fusion UV system model
- Lamp housing or cassette type
- Application (printing, coating, curing)
3. Confirm Bulb Type and Output
Common Fusion bulb types include:
- H bulb – broad spectrum, general purpose
- D bulb – doped for deeper cure
- V bulb – optimized for specific coatings and inks
Each bulb type produces a different UV output spectrum and must match the application.
If unsure:
Learn how to identify a UV lamp
Fusion vs Conventional UV Lamps
Fusion systems differ from traditional UV lamps in several ways:
- No electrodes (microwave-powered)
- Different lamp life characteristics
- System-specific bulb compatibility
- Integrated reflector and housing designs
Because of this, replacement options must be matched carefully to the system.
Common Issues with Fusion / Heraeus UV Lamps
- Gradual output degradation
- Bulb failure after extended use
- Incorrect bulb type for application
- Availability and lead time challenges
Related resources:
Lead Times for Fusion / Heraeus UV Lamps
Lead times for Fusion and Heraeus UV lamps can vary significantly depending on the bulb type and system configuration.
Older or less common bulb types may require longer production times or limited availability.
Learn more about UV lamp lead times
When a Fusion UV Lamp Needs Replacement
- Reduced curing performance
- Changes in coating or ink response
- Visible wear or aging
- System alarms or failure
If production is affected:
Need Help Identifying or Replacing a Fusion UV Lamp?
If the bulb type or system configuration is unclear, identification can often be done using:
- Photos of the bulb and housing
- System model information
- Application details
Download UV Lamp Identification Form