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3508 Fire Alarm Control Panel

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3508 Fire Alarm Control Panel
  • Available in 2, 4 and 8 zone models
  • Attractive surface or recessed mounting
  • Comprehensive range of engineering functions
  • Zone disablements
  • Ability to differentiate between Manual Call Point or automatic detector alarm
  • Programmable sounders for automatic and/or manual activation 72 Hour standby as standard
  • Third party approved to latest EN54 Parts 2 and 4. Meets the requirements of BS5839 Part 1: 2013
Your Price Exc VAT.:£325.50

The Protec 3500 range of conventional control panels has been designed to provide a simple, user-friendly, highly cost effective option with inbuilt flexibility previously only found in more complex addressable systems.

With 8 detection zones the 3508 Fire Alarm control panel is ideal for medium sized buildings such as industrial units, retail units, shops and schools.

The panel can be either surface or recessed mounted, with the controls and indications protected from unauthorised access by entering a user access code. These panel has the ability to identify if a ‘FIRE’ signal has been generated manually by a person activating a Manual Call Point (MCP) or automatically from a detector. This knowledge enables an appropriate cause and effect sequence to be implemented (time delays, for example) to allow for alarm verification for automatic detectors, but immediate alarms from MCPs. Cause and effect functions include coincidence detection, zone delays, pulsing sounders and fire relay. Interconnection with other systems is simplified as zones can be configured as ‘non-latching’, and there is a dedicated ‘class change input’ terminal. The 3508 control panel are third party approved to the latest European standard and meets all the requirements of BS5839 pt1.

Power Supply Mains

100V-240V ac

Integral Charger


Auxiliary 24V output

24V dc, 150mA max

Maximum Battery Size

2 x 12V 3.3Ah

Mains Fuse

16A time delay (not replaceable)

Battery Fuse

1.6A resettable fuse

Working Voltage

18V to 30V DC

Current Consumption

22mA (24V DC) + Zone Load

Number of Detector Zones


Max Zone Cable Length

500 metres

Max Zone Cable Capacitance


Max Zone Cable Resistance

15Ω per conductor

Detector Circuit EOL Values

Resistive(8.2Ω) or capacitive (100µF+22Ω)

Max Quiescent Zone Load

5mA per zone

Max Number of Detectors

25 per zone (smoke or heat)

Maximum Number of Devices

32 (MCP and Dets) per zone

MCP Series Resistor Values

180Ω ±5%

Number of Alarm Circuits


Alarm Circuits EOL Value

10kΩ ±5% ¼W

Maximum Alarm Load

400mA per circuit

Class Change Input

Activates alarm outputs

Global Fault Contacts

24V DC 1 A rating

Global Fire Contacts

24V DC 1 A rating

Temperature Range

-5 to 40°C

Humidity Limit

95% Non-Condensing

Dimensions (mm)

228(W) x 345(H) x 111(D)


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