C-TEC CAST CA731 Mains Switching Input Output Module

The C-TEC CA731 is a high-power addressable interface designed for the CAST protocol that provides direct mains-switching capability for fire alarm systems. With its robust 5A @ 230V AC relay, it allows fire panels to directly control high-voltage plant equipment such as roller shutters and smoke vents without additional slave relays. Featuring a configurable monitored input for up to 20 detectors and an onboard short-circuit loop isolator, the CA731 offers a comprehensive solution for complex cause-and-effect requirements. Its EN 54-13 certification and clear diagnostic LEDs make it a reliable and installer-friendly choice for critical life safety control applications.

Key Features
? Mains-Level Switching: Equipped with a high-rated volt-free changeover relay capable of switching up to 5A at 230V AC or 5A at 30V DC.
? Triple-Function Design: Integrated circuitry allows the device to function as a switch monitor, zone monitor, and mains-switching output unit simultaneously.
? Comprehensive Monitoring: Can be configured to monitor up to 20 conventional ActiV detectors and 10 manual call points, or any normally open/closed switch.
? Onboard Short-Circuit Isolator: Protects the integrity of the addressable loop by isolating faults, ensuring continued operation of the rest of the system.
? Visual Diagnostic LEDs: Includes three dedicated indicators for real-time status: Polling (Red flashing), Active/Relay Triggered (Red steady), and Input Fault (Yellow).
? Robust Protocol: Powered by C-TEC?s CAST “distributed intelligence” technology for high-speed communication and superior noise immunity.

Technical Specifications
? Model Number: CA731
? Protocol: C-TEC CAST (Addressable)
? Operating Voltage: 22V to 40V DC (Loop powered)
? Quiescent Current: 1.7mA typical @ 35V DC
? Alarm/Activation Current: 6mA (Relay & LEDs active)
? Relay Output: 1 x Volt-free Changeover (NO/C/NC)
? Relay Rating: 5A @ 230V AC; 5A @ 30V DC
? Input Modes: Monitored Zone (with EOL) or Monitored Switch (via 470?)
? Construction: ABS Polycarbonate with two-tone grey velvet label
? Dimensions: 147mm (W) x 87mm (H) x 22mm (D)
? IP Rating: IP40 (Indoor use only)
? Standards: Certified to EN54-13, 17, & 18 (LPCB / Kiwa)