The Tyco 4B-C (517.050.042) is a 4-inch continuity detector base designed primarily for Tyco 850 Series fire detectors. It incorporates a continuity switch that maintains the fire detection circuit when the detector is removed, while allowing the detector’s built-in short-circuit isolation function to operate correctly.
Features
- 4-inch continuity detector base for Tyco fire detection systems.
- Specifically designed for use with 850 Series detectors.
- Built-in continuity switch closes when the detector is removed.
- Maintains circuit continuity during detector removal and servicing.
- Works with the detector’s built-in short-circuit isolator.
- Electronics-free design permits in-circuit testing.
- Includes a detector park position for service and commissioning.
- Detector locking pin included.
- Snap-fits to the Tyco Ceiling Tile Adaptor for faster installation.
- Can also be screw-fixed to a ceiling, electrical box or deckhead mounting.
- Provides multiple mini-trunking break-outs for installation flexibility.
Typical Applications
- Marine fire detection systems
- Tyco MX/T2000 fire alarm systems
- Engine-room fire detection
- Machinery and technical spaces
- Shipboard fire alarm installations
- Offshore and marine facilities
- Tyco 850 Series addressable detector installations
- Replacement of existing 4B-C continuity bases
