Railway products
Voltage limiting devices and online monitoring
Explore RW voltage limiting devices for railway traction and RWVLM for online measurement, fault alerts and VLD control. Select a product family below to view its models and technical data.
DC traction
VLD class 2.1
VLD‑O+F for DC traction with one primary switching polarity.
Recoverable short‑time current
Explore class 2.1DC and AC traction
VLD class 2.2
Bipolar VLD‑O+F for DC and AC traction, with recoverable operation in both voltage polarities.
Recoverable short‑time current
Explore class 2.2Fault protection
RWVL1 · VLD class 1
Spark‑gap VLD‑F for railway fault protection.
- For DC and AC traction
- Remote wireless status indication
- Integrated lightning surge protection
Measurement and monitoring
RWVLM
Online Measurement and Monitoring
Rail‑to‑earth voltage, VLD current and device state, with immediate email, SMS and system alerts when a fault is registered.
The FT version adds its own forced switch‑off mechanism for the connected VLD, including VLDs from other manufacturers.
Explore RWVLMThe RW class 2 platform already led the market at 25 kA at 50 ms. The new HP models raise this rating to 34 kA at 50 ms — the highest published recoverable short‑time current identified in VLD class 2.
Discuss your railway application
Share the traction system, required current ratings and monitoring needs. We will help you select the appropriate model and configuration.