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Belimo FSLF24 US Fire and Smoke Damper Actuator with Spring Return and On/Off Control
- Regular price
- $635.00
- Sale price
- $635.00
- Regular price
-
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Product Description P/N: FSLF24 US
Description
The Belimo FSLF24 US is a spring-return electric actuator for operating compatible fire and smoke dampers in ventilation and air-conditioning systems. It provides 30 in-lb [3.5 Nm] of torque with on/off control and returns the damper to its configured fail-safe position when power is interrupted.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Machine Parts |
| Part Number | FSLF24 US |
| Subcategory | Electric Actuator |
| Alternate Part Number | FSLF24US |
| Series / Application | FSLF / fire and smoke damper actuation |
| Control Type | On/off, two-position |
| Nominal Supply | 24 VAC/DC; 50/60 Hz for AC operation |
| Torque | 30 in-lb [3.5 Nm] |
| Fail-Safe Mechanism | Mechanical spring return |
| Rotation / Direction | 95° maximum; clockwise or counterclockwise mounting |
| Motor Running Time | 15 seconds per 90° at rated voltage and torque |
| Spring-Return Time | Less than 15 seconds |
| Power Consumption | Running: 15 VA; holding: 2.5 W, 3.5 VA |
| Normal Ambient Temperature | 32–122°F [0–50°C] |
| Elevated-Temperature Duty | Rated torque at 350°F [177°C] for 30 minutes |
| Housing / Protection | Galvanized steel / NEMA 1, UL Enclosure Type 1 |
| Electrical Connection | Two 18 AWG leads with 1/2-inch NPT conduit connector |
| Weight | 4.40 lbs |
Information About FSLF24 US
The FSLF24 US is part of Belimo’s FSLF fire and smoke actuator series, with a galvanized steel housing and mechanical position indication. Its 24 VAC/DC motor tensions an internal spring during powered travel, storing the energy needed for the return stroke. Clockwise or counterclockwise mounting determines the operating and fail-safe direction to suit the damper arrangement. The actuator is intended for compatible UL 555 and UL 555S listed damper assemblies, with elevated-temperature performance specified separately from its normal ambient operating range.
Key Features:
- Spring-Return Operation: Moves the damper to its configured fail-safe position following loss of electrical power.
- Rated Torque: Delivers 30 in-lb [3.5 Nm] for compatible damper loads.
- On/Off Control: Provides two-position operation from a switched power supply.
- Low-Voltage Supply: Operates on nominal 24 VAC or 24 VDC, with 50/60 Hz AC compatibility.
- Fast Powered Travel: Completes a 90° motor-driven stroke in 15 seconds at rated conditions.
- Rapid Return Stroke: Provides spring-return travel in less than 15 seconds.
- Reversible Mounting: Supports clockwise or counterclockwise operation through mounting orientation.
- Position Indication: Includes a mechanical indicator for checking actuator position.
The FSLF24 US delivers the reliability and precision required for commanded positioning and fail-safe return of compatible fire and smoke dampers.
Description
The Belimo FSLF24 US is a spring-return electric actuator for operating compatible fire and smoke dampers in ventilation and air-conditioning systems. It provides 30 in-lb [3.5 Nm] of torque with on/off control and returns the damper to its configured fail-safe position when power is interrupted.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Machine Parts |
| Part Number | FSLF24 US |
| Subcategory | Electric Actuator |
| Alternate Part Number | FSLF24US |
| Series / Application | FSLF / fire and smoke damper actuation |
| Control Type | On/off, two-position |
| Nominal Supply | 24 VAC/DC; 50/60 Hz for AC operation |
| Torque | 30 in-lb [3.5 Nm] |
| Fail-Safe Mechanism | Mechanical spring return |
| Rotation / Direction | 95° maximum; clockwise or counterclockwise mounting |
| Motor Running Time | 15 seconds per 90° at rated voltage and torque |
| Spring-Return Time | Less than 15 seconds |
| Power Consumption | Running: 15 VA; holding: 2.5 W, 3.5 VA |
| Normal Ambient Temperature | 32–122°F [0–50°C] |
| Elevated-Temperature Duty | Rated torque at 350°F [177°C] for 30 minutes |
| Housing / Protection | Galvanized steel / NEMA 1, UL Enclosure Type 1 |
| Electrical Connection | Two 18 AWG leads with 1/2-inch NPT conduit connector |
| Weight | 4.40 lbs |
Information About FSLF24 US
The FSLF24 US is part of Belimo’s FSLF fire and smoke actuator series, with a galvanized steel housing and mechanical position indication. Its 24 VAC/DC motor tensions an internal spring during powered travel, storing the energy needed for the return stroke. Clockwise or counterclockwise mounting determines the operating and fail-safe direction to suit the damper arrangement. The actuator is intended for compatible UL 555 and UL 555S listed damper assemblies, with elevated-temperature performance specified separately from its normal ambient operating range.
Key Features:
- Spring-Return Operation: Moves the damper to its configured fail-safe position following loss of electrical power.
- Rated Torque: Delivers 30 in-lb [3.5 Nm] for compatible damper loads.
- On/Off Control: Provides two-position operation from a switched power supply.
- Low-Voltage Supply: Operates on nominal 24 VAC or 24 VDC, with 50/60 Hz AC compatibility.
- Fast Powered Travel: Completes a 90° motor-driven stroke in 15 seconds at rated conditions.
- Rapid Return Stroke: Provides spring-return travel in less than 15 seconds.
- Reversible Mounting: Supports clockwise or counterclockwise operation through mounting orientation.
- Position Indication: Includes a mechanical indicator for checking actuator position.
The FSLF24 US delivers the reliability and precision required for commanded positioning and fail-safe return of compatible fire and smoke dampers.
