Belimo FSAFB24-SR : Fail-Safe Fire & Smoke Actuator, 180 in-lb, 24VAC/DC, Modulating 2-10VDC Control Signal, 5-Year Warranty
The Belimo FSAFB24-SR is a versatile HVAC actuator designed for AC/DC 24 V operation. With a power consumption of 6.5 W during operation and 6 W (9.5 VA) at rest, it's equipped with a 2-10 V and 4-20 mA operating range, offering precise control. The actuator provides 180 in-lb [20 Nm] torque @ 250°F [121°C] for 30 minutes, with selectable clockwise (cw) or counterclockwise (ccw) mounting. Noise levels are 40 dB(A) during operation and 62 dB(A) in fail-safe mode, contributing to a quieter environment. It holds IP54 and NEMA 2 protection ratings, cULus listed to UL60730-1A:02; UL 60730-2-14:02, and CAN/CSA-E60730-1:02 certified, complying with ISO 9001 standards. Suitable for plenums per NEC and IMC, it operates in humidity up to 95% RH, temperatures of -22 to 122°F [-30 to 50°C], and storage from -40 to 176°F [-40 to 80°C]. Weighing 4.6 lb [2.1 kg], it features galvanized steel and plastic housing for durability. Ideal for fire and smoke dampers, it offers essential control in HVAC systems.
Specifications
| Voltage AC/DC | AC/DC 24 V |
| Power Consumption (Running) | 6.5 W |
| Power Consumption (Running) FS | 6 W, 9.5 VA |
| Power Consumption (Holding) FS | 3 W, 5 VA |
| Power Consumption For Wire Sizing | 10 VA |
| Torque | 180 in-lb [20 Nm] |
| Control Type | DC 2...10 V |
| Direction Of Motion Motor | selectable by ccw/cw mounting |
| Direction of Rotation (Fail-Safe) | Reversible with cw/ccw mounting |
| Manual Override | 5 mm hex crank (3/16" Allen), supplied |
| Angle of Rotation | 95 |
| Running Time (Motor) | 75 s / 90° |
| Running Time (Fail-safe) | <20 s |
| Protection category | IP54 |
| Degree Of Protection NEMA | NEMA 2 |
| Enclosure Type | UL Enclosure Type 2 |
| Ambient Temperature | -22...122°F [-30...50°C] |
Data Sheets
 | Belimo FSAFB24-SR Fire and Smoke Damper Actuator Data Sheet |
| Belimo Fire and Smoke Damper Actuator Brochure |
| Belimo Fire and Smoke Damper Actuator Consultant Specifications |
- Actuator Type:
- Fire & Smoke Actuator
- Voltage:
- 24VAC/DC
- Control Signal:
- 2-10VDC
- Auxillary Switch:
- None
