CAST CA731 Addressable Mains Switching Input Output Module View larger

CAST Mains Switching Input Output Module



  • Certified to EN54-17 & 18 by the LPCB.
  • A mains-switching version of our CA730 input output module.
  • Capable of switching 5A @ 230 VAC or 5A 30 VDC.
  • Incorporates the functions of a switch monitor, zone monitor, simple switch interface and output unit.
  • Can be configured to monitor any combination of the following:-
    • Up to 20 conventional detectors and 10 MCPs.
    • Any normally open switch with an EOL resistor fitted.
    • A simple normally open or closed switch (non-fault monitored).
  • Onboard short-circuit loop isolator.
  • 6mA Alarm Current.
  • Indicators for Loop polling, input faults and relay status.
  • Includes volt free changeover contacts that can be used to trigger rollershutter doors, gas shut-off valves, smoke vents, etc.
  • Mountable on a C-TEC NCP-26 surface box or a standard UK 25mm double gang back box (not supplied).


More details

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More Information

'CAST' is the world’s most-advanced 'distributed intelligence’ fire alarm system protocol. Conceived, designed and realised by C-TEC as part of a five-year, multi-million pound project, it involved the creation of a powerful proprietary communication protocol (C-TEC Addressable System Technology, CAST) and multiple control panels & field devices. Now available to purchase, its key features include:

• 255 devices per loop.
• Autonomous decision-making for faster response times.
• Multiple type codes.
• 40V loop drive voltage.
• Two ‘soft’ addressing options – automatic via the panel or manual via a powerful handheld programmer.
• Powerful multi-level addressing facilitates easy device addition and swapped device identification.
• Multiple functionality at a single address (integrated devices) - due 2019.
• Volumes, tones & detector modes can be changed at compatible panels.
• High-speed data transmission and robust data transfer.
• Intrinsically EN54-13 compliant.
• Provides geographical location of short and open circuit faults (a short circuit isolator is included as standard in every CAST field device).
• Replace device function.
• Future seamless integration with other CAST life safety systems reducing energy, servicing, installation and repair costs.
• Designed and manufactured in the UK.

Technical Specifications

Approvals/certificationsCertified to EN54-17/18 by the LPCB.
CompatibilityCompatible with C-TEC's XFP/ZFP CAST Addressable Fire Panels.
Application/operationIncorporates the functions of a switch monitor, zone monitor, simple switch interface and mains-switching output unit in one device.
Supply/operating voltage27 to 40V DC.
Quiescent current1.7mA.
Activation current6mA.
Auxiliary relaysOne volt-free single pole changeover relay rated at 5A @ 230 VAC or 5A @ 30 VDC. Non-monitored. Clean contact.
Auxiliary inputsOne monitored input that can be set to operate as: (1) a single zone monitor to support up to 20 ActiV detectors and 10 MCPs or (2) a monitored normally-open switch, triggered by a 470R.
IndicatorsActive (Lit Red): relay activated; monitored zone triggered or monitored switch closed; Polling (Flashing Red): communication check with the panel; Input Fault (Lit Yellow): fault detected on the monitored zone/switch.
ConnectionsSix 45º screw-type connectors that can take 0.5-2.5mm2 cable: +Ve & -Ve Loop In; +Ve & -Ve Loop Out; Zone +Ve & -Ve. Also includes N/O, N/C & C relay connections.
Product dimensions (mm)147 W x 87H x 22 D mm. Can be mounted on a standard 25mm UK flush or surface double gang back box.
Construction & finishABS Polycarbonate plate with a 200 micron two-tone grey velvet polyester label with red and white detailing.
IP RatingIP40 when correctly installed.
Operating conditions/temperature-10ºC to +55ºC.



3 other products in the same category:

BIM/CAD Drawings

CA731 (RFA)


CA731 surface mounted BIM (RFA)


Approval Certificates

Approval Certificate (LPCB)


EC Certificate of Conformity (CPR)


Declaration of Performance (C-TEC)


Declaration of Conformity (C-TEC)


EN54-13(2017) System Certificate