SKU
TRF24-O

TRF24-O - Belimo Spring-return actuator NO | ideal for ball valves

£158.76 £132.30
On request
Next Supplier Stock Update: 18/04/2026
Free delivery over £30
Manuals & Datasheets
 DATA-SHEET 
DATASHEET
 
Product typeActuator
IP ratingIP54
ManufacturerBelimo
Power Supply24Vac/Vdc
Torque2.5 Nm
Running time65 to 80 sec
Fail SafeSpring Return
Ideal for ball valves

Find all the components for your ventilation system at IACS. All Belimo Actuators on hand are eligible for Free Delivery and 1-2 Delivery.

The Belimo TRF24-O is a kind of Actuator used in HVAC applications and air ventilation systems.

The Torque used by the TRF24-O is 2.5 Nm.

The power supply requested for this Rotary Actuator is 24Vac/Vdc.

The ideal Belimo Actuators for your system are most affordable at iacs.

If you have questions concerning size or installation, refer to the Belimo custom datasheet above or email iacs for individualised support.

TRF24-O - Spring-return actuator NO, 2 Nm, 40...75 s (0...2 Nm) 95°

•    AC / DC 24 V, Open/Close
•    Running time spring 75s
•    Control Open/Close with single-wire contact
•    Emergency control closedYES

Features
 

  • Mode of operation  The actuator moves the ball valve to the operating position at the same time as tensioning the return spring. The ball valve is turned back to the safety position by spring force if the supply voltage is interrupted.

  • Simple direct mounting Straightforward direct mounting on the ball valve with only one screw. The mounting position in relation to the ball valve can be selected in 90°<) steps.

  • High functional reliability The actuator is overload-proof, requires no limit switches and automatically stops when the end stop is reached.

  • Combination valve/actuators Refer to the valve documentation for suitable valves, their permitted media temperatures and closing pressures.

•    Electrical Nominal voltage AC 24 V, 50/60 Hz DC 24 V
•    Nominal voltage range AC 19.2 ... 28.8 V DC 21.6 ... 28.8 V
•    Power consumption In operation 2.5 W @ nominal torque At rest 1.5 W For wire sizing  5 VA
•    Connection Cable 1 m, 2 x 0.75 mm2
•    Parallel connection Yes (note performance data for supply!)
•    Functional data Torque Motor Min. 2 Nm @ nominal voltage Spring-return Min. 2 Nm
•   Direction of rotation see «Overview of types»

•    Manual override No
•    Angle of rotation Max. 95°<)
•    Running time Motor <75 s (0 ... 2 Nm) Spring-return 75 s
•    Sound power level motor Max. 50 dB (A) Spring-return ~43 dB (A)
•    Service life Min. 60’000 emergency settings
•    Position indication Mechanical
•    Safety Protection class III Safety extra-low voltage
•    Degree of protection IP42 in any mounting position 
•    EMC CE according to 2004/108/EC
•    Mode of operation Type 1 (to EN 60730-1)
•    Rated impulse voltage 0.8 kV (to EN 60730-1)
•    Control pollution degree 3  (to EN 60730-1)
•    Ambient temperature –30 ... +50°C
•    Media temperature +5 ... +100°C (in ball valve)
•    Non-operating temperature –40 ... +80°C
•    Ambient humidity range 95% r.H., non-condensating (EN 60730-1)
•    Maintenance Maintenance-free
•    Dimensions / Weight Dimensions See «Dimensions» on page 2
•    Weight Approx. 600 g (without ball valve)