Gamewell FCI M500X

The Gamewell-FCI M500X is an automatic fault isolator module that protects fire alarm signaling line circuits from wire-to-wire short circuits. When a short circuit is detected between two isolator modules, the M500X automatically opens to isolate the faulted section while allowing the rest of the system to remain operational—critical for uninterrupted fire alarm operation.

Key Features

• Automatic isolation when signaling line voltage drops below 4 volts
• Dual-switch design opens circuit on both positive and negative lines
• No manual reset required; automatically restores when fault clears
• Protects up to 20 devices per isolator group
• Recommended spacing for optimal short-circuit protection
• Compatible with Gamewell-FCI analog addressable fire alarm systems

Technical Specifications

• Activation Threshold: Line voltage drop below 4 Volts
• Switch Type: Automatic electronic isolation (no relay contacts)
• Maximum Devices per Group: 20 recommended
• Operating Temperature: 32-120°F (0-49°C)
• Environmental: 10-85% RH non-condensing
• Mounting: SLC loop integration (no external power required)

Certifications

• UL Listed isolation module
• Gamewell-FCI system compatibility verified
• NFPA 72 compliant circuit isolation