Fuse Auto Changeover System For Railway Signalling (TYPE-I & TYPE-II) as per RDSO/SPN/209/2012

The Fuse Auto Changeover System (FACS), available in Type-I and Type-II variants, is an essential component for maintaining uninterrupted power supply in railway signaling systems. Compliant with RDSO/SPN/209/2012, the system automatically switches from the primary fuse to a standby fuse in the event of a fault or fuse failure—minimizing downtime and ensuring high availability of signaling circuits. Equipped with visual indicators, potential-free contacts for remote monitoring, and user-replaceable fuses, this system is ideal for critical safety applications. Its rugged construction, compatibility with 24 V DC systems, and ease of installation make it suitable for all types of relay rooms and outdoor installations.

Key Features:

• Compliant with RDSO/SPN/209/2012 specifications
• Available in Type-I (for 12 outputs) and Type-II (for 24 outputs)
• Automatic switching to standby fuse upon primary fuse failure
• Visual indication (LEDs) for blown fuses and standby status
• Provides potential-free contacts for SCADA/monitoring systems
• Works on 24 V DC power supply (±20%)
• Compact, modular design for easy maintenance
• Rail-mountable, rugged enclosures for signaling environments
• Easily replaceable fuse elements (standard 2 A/4 A/6 A fuses)
• EMI/RFI and surge-protected design

Its Uses:

• Ensures continuous power to railway signaling circuits
• Suitable for relay rooms, signaling huts, and outdoor locations
• Prevents disruption in signal relay operations
• Enables remote monitoring of fuse status
• Used in station signaling, block sections, and level crossings