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Belimo BFN24-T-ST/300 - spring-return actuator for fire dampers

Name: Belimo BFN24-T-ST/300 - spring-return actuator for fire dampers
Brand: Belimo
SKU: BFN24-T-ST/300
Price: 2750.28 PLN
Availability: OutOfStock

Belimo

zł2,750.28

VAT included

zł2,236.00 tax excluded

Spring-return actuator for fire and smoke control dampers, powered by AC/DC 24 V and controlled by Close/Open. Motor torque is 9 Nm and safety function torque is 7 Nm. If the power supply is interrupted, the spring moves the damper to the safety position.

Equipped with a BAT thermoelectric trigger (72°C), two auxiliary switches 2x SPDT and 3 m cables with connecting plugs.

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Belimo BFN24-T-ST/300

Spring-return actuator designed for 90° fire and smoke control dampers in ventilation and air-conditioning systems. When powered, it moves the damper to the operating position and tensions the return spring. An interruption of the power supply causes the damper to return to the safety position.

Key features and specifications

Power supply AC/DC 24 V; rated voltage frequency 50/60 Hz; Close/Open control.
Motor torque 9 Nm; safety function torque 7 Nm.
Motor running time <60 s / 90°; safety function running time 20 s @ -10...55°C, <60 s @ -30...-10°C.
BAT thermoelectric trigger: fuse operating temperature on the outside and inside of the duct 72°C.
Auxiliary switches 2x SPDT with switching points 5° / 80°.
Power consumption during operation 3.2 W, at rest 1.2 W; sizing power 4.3 VA.
Form-fit connection 12x12 mm, hollow shaft through; maximum rotation angle 95°.
Motor direction of movement selected by L/R mounting; manual adjustment with position stop when the power supply is off.
3 m cable with connecting plug for power supply and control, and separate 3 m cable with connecting plug for auxiliary switches.
Degree of protection IP54; protection class IEC/EN III, Safety Extra-Low Voltage (SELV).

Included: hand crank, position indicator and protective bag.

Brand

Belimo
Reference

BFN24-T-ST/300
EAN13

7630498119088

AC/DC voltage

AC/DC 24 V
Auxiliary switch connection

Cable with connecting plug 3 m, 6x 0.75 mm², FRNC (halogen-free)
Power consumption (running)

3.2 W
Power consumption (holding)

1.2 W
Rated power

4.3 VA
Power supply control connection

Cable with connecting plug 3 m, 2x 0.75 mm², FRNC (halogen-free)
Control type

Close/Open
Protection rating

IP54
Manual override

With stop
Running time (motor)

＜60 s / 90°
Running time (safety function)

20 s
Connection plug

Power / control: 3-pin plug, compatible with indicating devices with power supply (see “Accessories”) Auxiliary switch: 6-pin plug, compatible with indicating devices with power supply (see “Accessories”)
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