REV1mini DCC Autoreverser

About the Product

The BLOCKsignalling REV1mini is a compact DCC autoreverser that automatically manages track polarity in reversing sections on DCC model railway layouts. It provides a reliable solution for reversing loops, turntables, wye layouts, and other track arrangements where rail polarity must be reversed automatically.

When a train enters an isolated reversing section and a polarity mismatch occurs, the REV1mini instantly detects the short circuit and automatically switches the track polarity. This rapid response prevents the DCC command station from shutting down, allowing trains to pass smoothly through the reversing section without interruption. The module detects short circuits in less than five microseconds and corrects the polarity within 10–20 milliseconds.

Designed exclusively for DCC layouts, the REV1mini connects directly to the output of a DCC command station and features a compact solid-state design with no moving parts or adjustments required. Built-in protection automatically detects persistent short circuits, temporarily disconnecting the output before automatically restoring power once the fault has been cleared.

Key Features

• Automatically detects polarity mismatches and switches track polarity to prevent short circuits.
• Enables reversing loops, turntables, wye layouts, and other reversing sections.
• Ultra-fast short circuit detection in less than five microseconds.
• Polarity correction within 10–20 milliseconds.
• Compatible with DCC command stations rated at 2.5A or greater.
• Compact solid-state design with no moving parts or adjustments required.
• LED indicators provide clear power and polarity status.
• Built-in output protection automatically detects and recovers from persistent short circuits.
  

Electrical Requirements

• Designed for use with DCC command stations only.
• Compatible with DCC systems capable of supplying 2.5A or greater.
• Suitable for layouts up to OO/HO scale.
• Must not be connected to DC or AC power supplies.
  

Compatibility Information

Designed exclusively for DCC-powered layouts and must only be connected to the output of a DCC command station.

The REV1mini is compatible with Hornby™ HM7000 when the layout is powered by DCC. It is not compatible with HM7000 layouts powered directly from a 15V DC supply in Bluetooth mode. For 15V DC HM7000 layouts, use the REV7K-4A 15V DC Autoreverser. For layouts that may be operated from variable DC, DCC, or 15V DC, the REV2 Universal Autoreverser provides compatibility with all three power systems.

Typical Applications

The REV1mini is suitable for a range of DCC track arrangements where rail polarity must be reversed automatically, including:

• Reversing Loops – Allows trains to enter and leave a loop without causing a short circuit.
• Turntables – Automatically reverses the polarity of the turntable bridge to match the selected exit track.
• Wye Layouts – Enables trains to reverse direction through a wye without manual polarity switching.

Wiring Diagram

Documentation & Support

For full installation instructions, wiring diagrams, compatibility notes, and troubleshooting guidance, please download the latest instruction manual:

User Instruction Manual