Belimo FSNF24-S US : Fail-Safe Fire & Smoke Actuator, 70 in-lb, 24VAC/DC, On/Off Control Signal, (2) SPDT 3A @250V Aux Switch, 5-Year Warranty
The Belimo FSNF24-S US actuator operates efficiently with AC/DC 24V voltage and 50/60 Hz frequency. Consuming 27 VA during operation and 3 W at rest, it offers a versatile 0 to 95° rotation. Delivering 70 in-lb [8 Nm] torque at 350°F [177°C] for 30 minutes, it's reversible and fail-safe in 15 seconds/90°. With noise levels at 45 dB(A) during operation and 62 dB(A) during fail-safe, it meets IP40 and NEMA 1 standards, UL 2043 compliance, and cULus listing. The actuator includes dual auxiliary switches with 2 x SPDT, 7 A resistive (2.5 A inductive) @ AC 250 V, set at 10° and 85°. NYC Department of Buildings MEA 197-07-M and California State Fire Marshal Listing 3210-1593:101 also apply. It suits air plenums as per NEC and IMC, operating between 32°F to 122°F [0°C to 50°C] and enduring -40°F to 176°F [-40°C to 80°C] storage. This 5.7 lbs [2.8 kg] maintenance-free actuator is built with galvanized steel for durability.
Specifications
| Voltage AC/DC | AC/DC 24 V |
| Power Consumption (Running) FS | 27 VA |
| Power Consumption (Holding) FS | 3 W, 6.5 VA, End stop 55 VA, 2.5 A slow blow fuse * |
| Power Consumption For Wire Sizing | 40 VA |
| Auxiliary Switches | 2x SPDT |
| Torque | 70 in-lb [8 Nm] |
| Control Type | On/Off |
| Direction Of Motion Motor | selectable by ccw/cw mounting |
| Direction of Rotation (Fail-Safe) | Reversible with cw/ccw mounting |
| Angle of Rotation | 95 |
| Running Time (Motor) | 15 s / 90° |
| Running Time (Fail-safe) | <15 s |
| Protection category | IP40 |
| Degree Of Protection NEMA | NEMA 1 |
| Enclosure Type | UL Enclosure Type 1 |
| Ambient Temperature | 32...122°F [0...50°C ] |
Data Sheets
 | Belimo FSNF24-S US 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:
- On/Off
- Auxillary Switch:
- Yes
