LF24-SR - Belimo Spring-return Damper Actuator 4 Nm, 150 s, 95° AC / DC 24 V
£233.52
£194.60
On request
SKU
LF24-SR
Next Supplier Stock Update: 11/03/2025
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Manuals & Datasheets
| DATA-SHEET |
 |
| Product type | Actuator |
| IP rating | IP54 |
| Input Signal | 0..10 Vdc |
| Manufacturer | Belimo |
| Power Supply | 24Vac/Vdc |
| Torque | 4 Nm |
| Running time | 140 to 150 sec |
| Actuator type | Rotary |
| Fail Safe | Spring Return |
Find all parts for your ventilation system at iacs, the Free Delivery and 1-2 Delivery is available for all the Belimo Actuators in stock
The Belimo LF24-SR is a type of Actuator used in HVAC and ventilation systems.
The force applied by the Torque of the LF24-SR is 4 Nm.
The power supply requested for this Rotary Actuator is 24Vac/Vdc.
IACS has the best prices on the right Belimo Actuators for your system.
Consult the Belimo custom datasheet above or contact iacs via email for personalised assistance if you have queries about size or installation.
• LF24-SR - Belimo Spring-return actuator 4 Nm, 150 s, 95° AC / DC 24 V• Spring-return actuator 4 Nm, 150 s, 95° AC / DC 24 V, modulating IP 54
• Running time spring < 20 s
• Control DC 0...10 V
• Operating range DC 2...10 V
• Position feedback DC 2...10 V
• Connection PVC cable 1m
• Spindle driver universal spindle clamp
• Direction of rotation reversible (right/left)
• Angle of rotation limit. mech. adjustable
Application For the operation of air dampers that perform safety functions (e.g. frost and smoke protection, hygiene, etc.).
Mode of operation The LF24-SR is controlled by a standard DC 0...10 V signal. The actuator runs to the position specified by the control signal while tensioning the return spring at the same time. If the power supply is interrupted, the energy stored in the spring moves the damper back to its safe position.
Features
- Simple direct mounting on the damper spindle by universal spindle clamp. An antirotation device is supplied to prevent unwanted rotation of the whole unit.
- Mechanical angle of rotation limiting adjustable with built-in stop.
- High functional reliability The actuator is overload proof, needs no limit switches and halts automatically at the end stop.
• 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
• For wire sizing 5 VA (Imax 5.8 A @ 5 ms)
• Power consumption 2.5 W motoring, 1 W at rest
• Connecting cable 1 m long, 4 x 0.75 mm2
• Control signal Y DC 0...10 V @ 100 kinput resistance
• Operating range DC 2...10 V for 0...100%
• Measuring voltage U DC 2...10 V (max. 0.7 mA) for 0....100%
• Direction of rotation – motor selected with switch L/R – spring return selected by L/R mounting
• Torque motor min. 4 Nm (at rated voltage) – spring return min. 4 Nm
• Angle of rotation max. 95° (adjustable 37...100% with built-in mechanical stop)
• Running time – motor 150 s
– spring return ≈20 s @ –20...50 °C / max. 60 s @ –30 °C
• Sound power level motor max. 30 dB (A), spring ≈62 dB (A)
• Service life min. 60 000 operations
• Position indication mechanical
• Protection class (safety extra-low voltage)
• Degree of protection IP 54
• Ambient temp. range – 30...+50 °C
• Non-operating temp. – 40...+80 °C
• Humidity test to EN 60335-1
• EMC CE according to 89/336/EEC, 92/31/EEC, 93/68/EEC
• Maintenance maintenance-free
• Weight 1400 g