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SKU
EF24A-SR
EF24A-SR - Belimo Spring-return Damper Actuator 30 Nm, < 150 s, AC / DC 24 V, modulating
£669.48
£557.90
On request
Next Supplier Stock Update: 18/10/2026
Manuals & Datasheets
| DATA-SHEET |
 |
| Product type | Actuator |
| IP rating | IP54 |
| Input Signal | 0..10 Vdc |
| Manufacturer | Belimo |
| Power Supply | 24Vac/Vdc |
| Torque | 30 Nm |
| Running time | 140 to 150 sec |
| Actuator type | Rotary |
| Fail Safe | Spring Return |
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 EF24A-SR is a kind of Actuator used in HVAC applications and air ventilation systems.
The Torque used by the EF24A-SR is 30 Nm.
The power supply requested for this Rotary Actuator is 24Vac/Vdc.
Find the appropriate Belimo Actuator for your system at the greatest price at iacs.
If you have questions about size or installation, consult the Belimo custom datasheet above or send an email to iacs to get personalised guidance.
EF24A-MF - Spring-return actuator 30 Nm, < 150 s, AC / DC 24 V, modulating, MF
• IP 54, Manual override with integrated position stop
• Running time spring < 20 s
• Control DC 0...10 V (0...32 V adjustable)
• Operating range DC 0.5...10 V, adjustable (0.5...32 V)
• Position feedback DC 0.5...10 V, adjustable (0.5...32 V)
• Connection cable FRNC 1 m
• Spindle driver universal spindle clamp
Features
- Mode of operation The actuator moves the damper to the operating position at the same time as tensioning the return spring. The damper is turned back to the emergency position by spring force if the supply voltage is interrupted.
- Simple direct mounting Simple direct mounting on the damper spindle with a universal spindle clamp, supplied with ananti-rotation strap to prevent the
actuator from rotating. - Spindle stabiliser The spindle clamp of the spring-return actuator is equipped ex-works with a spindle stabiliser for stabilising the combination of damper, damper spindle and actuator.
This is comprised of two plastic support rings and, depending on the installation situation and the spindle diameter, must be left in place or partially or completely removed.
Long spindle installation :• The use of the spindle stabiliser is necessary with long spindle installation with a spindle diameter of 12 to 20 mm.• The use of the spindle stabiliser is not necessary with long spindle installation with a spindle diameter of 21 to 26.7 mm, and it can be removed.
Short axis installation :• The necessity of the spindle stabiliser does not apply with short spindle installation; it can be removed or – if the length of the spindle permits it – left in the spindle clamp.
For additional information, see the Installation instructions. - Manual override Manual operation of the damper with the hand crank, locking in any position with the interlocking switch.
- Adjustable angle of rotation Adjustable angle of rotation with mechanical end stop.High operational reliabilityThe actuator is overload-proof, requires no limit switches and automatically stops when the end stop is reached.
- High operational reliability The actuator is overload-proof, requires no limit switches and automatically stops when the end stop is reached.
• Electrical data 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 7 W @ nominal torque
• At rest 4.5 W
• For wire sizing 12 VA
• Connection Cable 1 m, 4 x 0.75 mm2
• Functional data Torque (nominal torque) Min. 40 Nm @ nominal voltage
• Direction of rotation Reversible with switch
• Spring return Can be selected by mounting L / R
• Manual override Gearing latch disengaged with pushbutton, can be locked
• Angle of rotation Max. 95°, can be limited at both ends with adjustable mechanical end stops
• Running time 150 s / 90°
• Sound power level Max. 45 dB (A)
• Spring return ≤ 150 s running time≤71 dB (A)
• Service lifeMin. 60,000 emergency positions
• Position indication Mechanical
• Safety Protection class II Totally insulated
• Degree of protection IP66 NEMA 4, UL Enclosure Type 4
• EMC CE according to 2004/108/EC
• Low-voltage directive CE according to 2006/95/EC
• Certification Certified to IEC/EN 60730-1 and IEC/EN 60730-2-14 cULus according to UL 60730-1 and UL 60730-2-14 and CAN/CSA E60730-1:02
• Mode of operation Type 1
• Rated impulse voltage 0.8 kV
• Control pollution degree 4
• Ambient temperature –30 ... +50°C
• Non-operating temperature –40 ... +80°C
• Ambient humidity 95% r.h.
• Maintenance Maintenance-free
• Dimensions / Weight Dimensions See «Dimensions» on page 3
• Weight Approx. 4.3 kg
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