Description

TYCO
5BI 5”
ISOLATOR DETECTOR BASE
517.050.018
0786-CPD-20762

The Tyco 5BI 5-Inch Isolator Detector Base (part reference 517.050.018) is a purpose-designed base unit for use within addressable marine fire alarm systems. Incorporating built-in isolator functionality, it serves a critical protective role on detection loop wiring — automatically isolating a short-circuit fault on the loop to prevent it from disabling the entire system, while allowing all other detectors and devices to continue operating normally. This type of component is fundamental to the reliability and resilience of fire detection systems installed aboard commercial and naval vessels, where continuous loop integrity is a SOLAS-relevant operational requirement.

Key Features

✓ Integrated isolator function within the detector base, providing automatic short-circuit protection on the addressable detection loop without manual intervention.

✓ Designed to accept compatible 5-inch detector heads, with mounting geometry suited to standard shipboard ceiling and bulkhead installations — exact detector compatibility subject to system configuration confirmation.

✓ Carries certification reference 0786-CPD-20762, indicating conformance to applicable product standards; system and panel compatibility should be verified against the vessel’s installed fire alarm configuration.

✓ Suitable for installation in dry interior spaces throughout the vessel, including accommodation, machinery spaces, and service areas where loop-based fire detection is required.

✓ Designed as a replaceable field component, enabling targeted maintenance or fault rectification without wholesale loop rewiring, reducing system downtime during service operations.

Marine Applications

✓ Addressable fire detection loop installations aboard merchant vessels, tankers, bulk carriers, and passenger ships requiring fault-tolerant loop architecture.

✓ Accommodation and public space fire alarm systems on cruise ships, ferries, and ro-ro vessels where continuous detection coverage is operationally and regulatory critical.

✓ Engine room and machinery space fire alarm sub-loops where short-circuit isolation is essential to prevent total loop failure from a single wiring fault.

✓ Offshore platforms and FPSOs with Tyco-based fire & gas detection systems requiring like-for-like base replacement during planned or corrective maintenance.

✓ Naval and government vessels operating fire alarm systems with addressable loop topologies that demand integrated isolator functionality at each detector point.

Why Marine Engineers Choose

The Tyco 5BI Isolator Detector Base provides a reliable, standards-referenced solution for maintaining fire alarm loop integrity at the individual detector level — a practical and operationally sound choice for vessels where system continuity cannot be compromised.

Ideal For

Merchant vessels, passenger ships, offshore platforms, FPSOs, ferries, tankers, bulk carriers, and naval vessels operating Tyco addressable fire alarm systems requiring isolator-equipped detector bases.

Technical Support

Technical support is available for this fire alarm system component, covering onboard installation, detector base replacement, and remote troubleshooting of loop fault conditions. Assistance can be provided to help confirm compatibility with existing Tyco fire alarm panel configurations and loop wiring arrangements.