Description
TYCO SAFETY PRODUCTS
4B-C
4” CONTINUITY BASE
517.050.042
The Tyco 4B-C is a 4-inch continuity base designed for use within marine fire alarm systems. Continuity bases serve a critical role in detector mounting assemblies by maintaining circuit integrity even when a detector head is removed from its base — ensuring the fire alarm loop remains active and uninterrupted during maintenance or head replacement. This type of component is essential for compliance with onboard fire detection system requirements and is commonly installed throughout accommodation spaces, machinery spaces, and other protected zones aboard commercial and passenger vessels.
Key Features
✓ Continuity function maintains fire alarm loop circuit integrity when the detector head is absent, preventing false fault signals during servicing.
✓ 4-inch (4B-C) form factor — physical dimensions and electrical ratings are subject to confirmation against the specific system configuration and panel requirements.
✓ Compatible with Tyco Safety Products fire alarm detector ranges; system panel and loop compatibility should be verified against the installed fire detection system.
✓ Suitable for fixed installation in detector mounting locations throughout vessel protected areas; installation environment and mounting considerations depend on system design and applicable SOLAS fire detection requirements.
✓ As a direct replacement base, part number 517.050.042 supports like-for-like servicing, minimising system downtime during scheduled maintenance or detector upgrades.
Marine Applications
✓ Accommodation and cabin spaces aboard passenger ferries, cruise vessels, and ro-ro ships where continuous fire alarm loop integrity is mandatory.
✓ Machinery spaces and engine rooms on merchant vessels requiring robust fire detection base infrastructure.
✓ Offshore platforms and support vessels where fire alarm systems must remain fully operational during detector head servicing.
✓ Cargo vessels and tankers with distributed fire alarm loops dependent on continuity base components to sustain circuit function.
✓ Newbuild and retrofit fire alarm system installations requiring Tyco-compatible detector bases across multiple protected zones.
Why Marine Engineers Choose
The Tyco 4B-C continuity base is a trusted, manufacturer-specific component that supports uninterrupted fire alarm loop operation during detector maintenance — reducing system downtime and supporting compliance with onboard fire safety requirements.
Ideal For
Passenger vessels, cargo ships, tankers, offshore platforms, ro-ro ferries, and any commercial vessel operating a Tyco Safety Products fire alarm detection system requiring reliable continuity base solutions.
Technical Support
Technical support is available for this fire alarm system component, covering onboard installation guidance, repair, and remote troubleshooting assistance. Enquiries relating to system compatibility and installation are welcomed.
