The TYCO DHM-5B (517.050.603) is a deckhead mounting box designed to protect detector-base electrical connections in damp, dirty and environmentally challenging environments, particularly marine and offshore installations. It provides a sealed IP55 interface and is compatible with TYCO 5-inch detector bases used with suitable 600/800 Series detectors.
Key Features
- Provides a sealed mounting arrangement for fire detectors in harsh environments.
- Protects detector-base terminals from moisture, condensation and contamination.
- IP55 protection when installed with the supplied gasket.
- Four 20/25 mm cable/conduit entry points for flexible installation.
- Compatible with all suitable TYCO 5-inch bases.
- Can be screwed, bolted or welded to the deckhead/supporting surface.
- Supplied with one Base Accessory Terminal (BAT); additional terminals can be obtained using the accessory terminal kit 517.050.612.
- Suitable for use with TYCO 600/800 Series detectors where the detector/base combination is approved for the environment.
Typical Applications
- Marine fire detection systems
- Ship engine rooms and machinery spaces
- Offshore platforms and installations
- Damp or dirty industrial areas
- Areas where conventional detector-base terminals require additional environmental protection
- TYCO MX/Minerva/T2000 fire detection installations
- Retrofit and replacement of existing deckhead detector mounting arrangements.




