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Belimo BFN24-SR - spring-return actuator for fire dampers

Belimo BFN24-SR - spring-return actuator for fire dampers

Belimo
zł2,394.81
VAT included
zł1,947.00 tax excluded

Spring-return actuator for fire and smoke dampers in ventilation and air-conditioning systems. AC/DC 24 V supply, modulating control with a 2...10 V signal, motor torque of 9 Nm and safety function torque of 7 Nm.

Equipped with two auxiliary switches 2x SPDT (5° / 80°), a mechanical position indicator and a form-fit connection of 12x12 mm with a hollow through shaft.

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Belimo BFN24-SR

Spring-return actuator for fire and smoke dampers with 90° rotation in ventilation and air-conditioning systems. The analogue Y signal sets the damper to its operating position while tensioning the return spring. If the power supply is interrupted, the spring moves the damper to its safety position.

Key features and specifications

  • Supply: AC/DC 24 V, 50/60 Hz; modulating control, Y signal range: 2...10 V; feedback signal U: 2...10 V.
  • Motor torque: 9 Nm; safety function torque: 7 Nm.
  • Motor running time: <60 s / 90°; safety function operating time: 20 s @ -10...55°C, <60 s @ -30...-10°C.
  • Rotation angle: max. 95°; motor direction of movement selected by L/R mounting.
  • Two auxiliary switches 2x SPDT, switching points 5° / 80°; mechanical position indicator.
  • Form-fit connection 12x12 mm, hollow through shaft; manual adjustment with position locking.
  • Power consumption during operation: 3.7 W; in standby position: 1.2 W; for cable sizing: 6.5 VA.
  • Power and control cable: 1 m, 4x 0.75 mm², halogen-free; auxiliary switch cable: 1 m, 6x 0.75 mm², halogen-free.
  • IEC/EN degree of protection: IP54; IEC/EN protection class: III, Safety Extra-Low Voltage (SELV).

Included: hand crank, position indicator and protective cover. The actuator is adapted and mounted on the damper by the fire damper manufacturer.

  • Brand
    Belimo
  • Reference
    BFN24-SR
  • EAN13
    7630498119002

  • AC/DC voltage
    AC/DC 24 V
  • Auxiliary switch connection
    Cable 1 m, 6x 0.75 mm², FRNC (halogen-free)
  • Power consumption (running)
    3.7 W
  • Power consumption (holding)
    1.2 W
  • Rated power
    6.5 VA
  • Power supply control connection
    1 m cable, 4x 0.75 mm², FRNC (halogen-free)
  • Control type
    DC 2...10 V
  • Protection rating
    IP54
  • Manual override
    With stop
  • Running time (motor)
    ＜60 s / 90°
  • Running time (safety function)
    20 s
  • Auxiliary contacts
    2x SPDT
  • Torque
    9 Nm
  • Direction of movement - motor
    Selectable by mounting L/R
  • Rotational angle
    95°
  • Mechanical connection
    Form-fit connection 12x12 mm, through hollow shaft

Techniczna karta katalogowa

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Instrukcja montażu

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Techniczna karta katalogowa – BFN24-SR

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EU Declaration of Conformity – BFN24-SR

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Environmental Declaration – BFN..

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