FSLF24 US | Fire & Smoke Actuator | 30 in-lb | Spg Rtn | 24V | On/Off | 1m Cable | Belimo
[Part# FSLF24 US is the same as FSLF24, FSLF24US]
Overview Details for FSLF24 US
The Belimo FSLF24US is a spring-return actuator specifically designed for fire and smoke dampers in life safety applications. This UL-listed and NFPA-compliant actuator ensures reliable fail-safe operation, automatically closing the damper in the event of power failure, such as during a fire. It operates on 24V AC/DC and provides 30 in-lb of torque, suitable for a range of fire and smoke damper sizes.
The FSLF24US features a robust galvanized steel housing for corrosion resistance and can withstand temperatures up to 350°F (177°C) for 30 minutes, ensuring reliable performance in demanding fire conditions. Its compact design and direct coupling method simplify installation, while the included 1-meter cable facilitates wiring. The actuator's spring-return mechanism is factory set for 90° rotation but can be field-adjusted from 5° to 90° for application-specific requirements.
The FSLF24US offers a cost-effective and reliable solution for fire and smoke damper control, providing peace of mind in critical life safety systems. The FSLF24-S US model includes two built-in SPDT auxiliary switches for position indication and alarm signaling.
Specifications
Item Number | FSLF24 US |
Brand | Belimo |
Spring Return | Spring Return |
Actuator Type |
Fire and Smoke Damper Actuator (Spring Return) |
Control Input |
On/Off (2-position) |
Voltage |
24V AC/DC (Requires filtered and regulated power supply) |
Torque |
30 in-lb (3.4 Nm) at temperatures from 0°C to 177°C |
Running Time |
15 seconds for 90° rotation (motor); <15 seconds (spring return) |
Power Consumption (Running) |
15 VA |
Power Consumption (Holding) |
2.5W, 3.5 VA (End stop |
Rotation Angle |
95° (factory set, field adjustable 5° to 90°) |
Ambient Temperature Range |
-4°F to 158°F (-20°C to 70°C), normal duty; 32°F to 122°F (0°C to 50°C), safety duty |
Cable |
1 meter (3.28 feet), 18 AWG, with 1/2" NPT conduit connector |
Enclosure Rating |
NEMA 1 / IP40 (ZS-300 NEMA 4X enclosure available separately) |
Manual Override |
No |
Approvals |
UL listed (file XAPX.E108966), UL555, UL555S, NFPA compliant (for fire and smoke dampers), UBC compliant (15-second opening/closing) |