Belimo Open/Close Damper Actuator, 20Nm, 19.2 → 264 V ac, 21.6 → 137.5 V dc
- RS Stock No.:
- 834-8293
- Mfr. Part No.:
- SFA-S2
- Brand:
- Belimo
Subtotal (1 unit)*
£434.72
(exc. VAT)
£521.66
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- 24 unit(s) ready to ship
- Plus 32 unit(s) ready to ship from another location
- Plus 9 unit(s) shipping from 30 October 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £434.72 |
*price indicative
- RS Stock No.:
- 834-8293
- Mfr. Part No.:
- SFA-S2
- Brand:
- Belimo
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Belimo | |
| Return Type | Spring Return | |
| Maximum Damper Area | 4m² | |
| Damper Spindle Compatibility | 10 → 25.4mm | |
| Switch Included | Yes | |
| Power Consumption | 7W | |
| Control Type | Open/Close | |
| Supply Voltage | 19.2 → 264 V ac, 21.6 → 137.5 V dc | |
| Motor Torque | 20Nm | |
| Return Torque | 20Nm | |
| Noise Level | 45dB(A) | |
| Maximum Damper Spindle Size | 25.4mm | |
| Minimum Damper Spindle Size | 10mm | |
Select all | ||
|---|---|---|
Brand Belimo | ||
Return Type Spring Return | ||
Maximum Damper Area 4m² | ||
Damper Spindle Compatibility 10 → 25.4mm | ||
Switch Included Yes | ||
Power Consumption 7W | ||
Control Type Open/Close | ||
Supply Voltage 19.2 → 264 V ac, 21.6 → 137.5 V dc | ||
Motor Torque 20Nm | ||
Return Torque 20Nm | ||
Noise Level 45dB(A) | ||
Maximum Damper Spindle Size 25.4mm | ||
Minimum Damper Spindle Size 10mm | ||
RoHS Status: Exempt
- COO (Country of Origin):
- CH
Belimo Damper Actuator
The Belimo Sf series damper actuator has an open/close control type. It is a spring return actuator with an emergency function for adjusting air dampers in ventilation and air conditioning systems in buildings. It has an adjustable U-clamp, which accepts round or square shafts. This actuator can be installed with a pre-tensioned spring. This product is controlled with a standard signal of DC 0V to 10V and moves the damper to the operating position. This actuator is overload proof, requires no limit switches. It requires AC supply voltage between 19.2VAC and 264VAC and DC supply voltage between 21.6VDC and 137.5VDC.
It has 2 x SPDT integrated auxiliary switches
It has 2 x SPDT integrated auxiliary switches
Features and Benefits
The direction of rotation reversible
Spindle driver universal spindle clamp
Operating voltage range is between 2VDC and 10VDC
Running springtime is <20s
PVC connection cable length is 1m
Motor and return torque is 20Nm
Maximum damper area is 4m²
Damper spindle compatibility is between 10mm and 25.4mm
Power consumption is 7W
Noise level ≤45 (Motor) dBA, ≤62 (Spring Return) dBA
Rated impulse voltage is 0.8 kV
Maintenance-free
Service life min. 60,000 emergency positions
Ambient temperature is between -30°C and 50°C
Spindle driver universal spindle clamp
Operating voltage range is between 2VDC and 10VDC
Running springtime is <20s
PVC connection cable length is 1m
Motor and return torque is 20Nm
Maximum damper area is 4m²
Damper spindle compatibility is between 10mm and 25.4mm
Power consumption is 7W
Noise level ≤45 (Motor) dBA, ≤62 (Spring Return) dBA
Rated impulse voltage is 0.8 kV
Maintenance-free
Service life min. 60,000 emergency positions
Ambient temperature is between -30°C and 50°C
Certifications
IEC/EN 60730-1
UL 60730-1A
UL 60730-2-14
CAN/CSA E60730-1:02
IP54
UL 60730-1A
UL 60730-2-14
CAN/CSA E60730-1:02
IP54
Related links
- Belimo Open/Close Damper Actuator 19.2 → 264 V ac, 21.6 → 137.5 V dc
- Belimo Open/Close Damper Actuator 240 V ac
- Belimo Open/Close Damper Actuator 24 V ac/dc
- Belimo Open/Close Damper Actuator 240 V ac
- Belimo Open/Close Damper Actuator 24 V ac/dc
- Open/Close Damper Actuator 24 V ac
- Belimo Open/Close Damper Actuator 230 V ac
- Belimo Open/Close Damper Actuator 24 V ac