Overview
The Werma 641 400 00 is a clear continuous light element designed for modular signal tower applications. This filament-based light module operates across a broad voltage range (12-240V AC/DC) and provides reliable visual indication in industrial automation, manufacturing, and process control environments. With IP65 ingress protection and a standard 70mm diameter form factor, it integrates seamlessly into existing KombiSIGN 71 signal tower systems.
Key Features
- Clear lens with incandescent filament bulb for maximum visibility
- Wide voltage compatibility: 12-240V AC/DC operation
- IP65-rated enclosure for dust and water protection
- BA15d bayonet base connection for quick installation and replacement
- KombiSIGN 71 modular tower compatibility
- Permanent/continuous light signal (non-flashing)
Technical Specifications
- Model: Werma 641 400 00 (641.400.00)
- Light Color: Clear
- Operating Voltage: 12-240V AC/DC
- Diameter: 70mm
- Height: 65.5mm
- Signal Type: Continuous/Permanent
- Base Type: BA15d Bayonet
- Protection Rating: IP65
- Series: KombiSIGN 71 (Modular)
- Bulb Type: Incandescent (bulb supplied separately)
- Manufacturer: Werma Signaltechnik GmbH + Co. KG
Typical Applications
- Industrial manufacturing process status indication
- Machine condition monitoring (run/idle/alert states)
- Assembly line signal towers
- Quality control and inspection stations
- Packaging and conveyor system visual feedback
- Production floor visual communications
Compatibility & Replacements
Compatible With
- KombiSIGN 71 (KS71) modular signal towers
- Any BA15d bayonet socket stack light tower
- 12V, 24V, 110V, 120V, 230V, 240V AC/DC power supplies
- Industrial PLC and automation control systems
Replaces / Drop-In Replacement For
- Werma 641 400 00 (direct part compatibility with same model designation)
- Other Werma 641 series clear light elements in modular tower configurations
Works With
- KombiSIGN 71 modular signal tower platform
- BA15d bayonet connection standard
- Multi-voltage AC/DC control systems
- 24V industrial relay logic and PLC systems
- Building Management Systems (BMS)






