Fire alarm installations, smoke and heat evacuation and control systems

TUL500EN is the additional 27,6 V 5 A power supply created to ensure autonomy to fire detection systems and smoke and heat evacuation and control systems (SHE).

It is composed of a foldback current limited switching power supply, a microcontroller supervisory circuit and auto-reset electronic fuses.

Constant monitoring of the functions and failure notification in case of: interrupted fuses – high battery voltage – low battery voltage – mains failure and missing battery recharge – disconnected battery – high battery resistance.

Failure notifications can be seen on the LEDs of the front panel and are signaled by dry relay contacts.

The device has 1 output for battery recharge and 3 independent outputs. Protection against polarity inversion and short circuits. Battery recharge circuit is temperature-compensated.

Electronic fuses for outputs protection. In the event of output- or battery short circuit, or in case of disconnected battery, the power supply is nevertheless able to supply current.



  • Immediate intervention: the power supply is always active. In case of 220V mains failure, batteries instantly supply power.

  • Periodic checks of: internal resistance and batteries efficiency for assessing their ageing process.

  • Functional class: A- the power supply is able to work with any type of smoke and heat evacuation and control system.

  • The possibility to install many power supplies for different lines increases reliability of the system.




EN 54-4:1997+A1:2002+A2:2006

(Fire detection and fire alarm systems. Part 4: Power supplies)

EN 12101-10:2005/AC:2007

(Smoke and heat evacuation systems. Part 10: Power supplies)



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