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LF24-SR US | Belimo 35 In Lb Spring Return Modulating Damper Actuator 24V
- Regular price
- $446.00
- Sale price
- $446.00
- Regular price
-
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Product Description P/N: LF24-SR US
Description
The Belimo LF24-SR US is a compact spring return damper actuator providing 35 in-lb of torque for precise modulating control. It operates on AC/DC 24 V and supports fail-safe positioning for reliable airflow control in HVAC systems.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Damper Actuators |
| Part Number | LF24-SR US |
| Subcategory | Spring Return Actuators |
| Actuator Type | Spring return, modulating |
| Nominal Torque | 35 in-lb (4 Nm) |
| Nominal Voltage | AC/DC 24 V |
| Nominal Frequency | 50/60 Hz |
| Voltage Range | AC 19.2…28.8 V / DC 21.6…28.8 V |
| Control Signal | 2…10 V (4…20 mA with resistor) |
| Power Consumption (Running) | 2.5 W |
| Power Consumption (Rest) | 1 W |
| Transformer Sizing | 5 VA |
| Angle of Rotation | Max. 95° |
| Running Time | 150 s / 90° |
| Fail-Safe Running Time | <25 s |
| Electrical Connection | 18 GA plenum cable, 3 ft, 1/2" NPT conduit |
| Degree of Protection | IP54 / NEMA 2 |
| Ambient Temperature | -22…122°F (-30…50°C) |
| Weight | 3.4 lb (1.6 kg) |
Information About LF24-SR US
The LF24-SR US is part of Belimo’s compact damper actuator series designed for accurate airflow modulation and dependable fail-safe operation. It delivers 35 in-lb of torque and features a spring return mechanism that drives the damper to a predefined safety position upon power loss. The actuator supports modulating control via a 2…10 V signal and provides position feedback for integration with building automation systems. Its maintenance-free construction and integrated overload protection ensure consistent long-term performance in HVAC installations.
Key Features
- Spring Return Safety Function: Integrated spring mechanism provides automatic fail-safe positioning during power interruption.
- Precise Modulating Control: Supports 2…10 V control signals with optional 4…20 mA input using an external resistor.
- Compact Torque Output: Delivers 35 in-lb of torque suitable for small to medium-sized air control dampers.
- Selectable Direction Of Rotation: Motor and fail-safe direction can be configured through mounting orientation and onboard switch.
- Integrated Position Feedback: Provides 2…10 V feedback signal for accurate damper position monitoring.
- Quiet Operation: Low motor noise level of 30 dB(A) supports use in noise-sensitive HVAC environments.
- Durable And Protected Design: IP54 and NEMA 2 ratings protect internal components from dust and incidental moisture.
The LF24-SR US delivers the reliability and precision required for safe and accurate damper control in commercial HVAC systems.
Description
The Belimo LF24-SR US is a compact spring return damper actuator providing 35 in-lb of torque for precise modulating control. It operates on AC/DC 24 V and supports fail-safe positioning for reliable airflow control in HVAC systems.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Damper Actuators |
| Part Number | LF24-SR US |
| Subcategory | Spring Return Actuators |
| Actuator Type | Spring return, modulating |
| Nominal Torque | 35 in-lb (4 Nm) |
| Nominal Voltage | AC/DC 24 V |
| Nominal Frequency | 50/60 Hz |
| Voltage Range | AC 19.2…28.8 V / DC 21.6…28.8 V |
| Control Signal | 2…10 V (4…20 mA with resistor) |
| Power Consumption (Running) | 2.5 W |
| Power Consumption (Rest) | 1 W |
| Transformer Sizing | 5 VA |
| Angle of Rotation | Max. 95° |
| Running Time | 150 s / 90° |
| Fail-Safe Running Time | <25 s |
| Electrical Connection | 18 GA plenum cable, 3 ft, 1/2" NPT conduit |
| Degree of Protection | IP54 / NEMA 2 |
| Ambient Temperature | -22…122°F (-30…50°C) |
| Weight | 3.4 lb (1.6 kg) |
Information About LF24-SR US
The LF24-SR US is part of Belimo’s compact damper actuator series designed for accurate airflow modulation and dependable fail-safe operation. It delivers 35 in-lb of torque and features a spring return mechanism that drives the damper to a predefined safety position upon power loss. The actuator supports modulating control via a 2…10 V signal and provides position feedback for integration with building automation systems. Its maintenance-free construction and integrated overload protection ensure consistent long-term performance in HVAC installations.
Key Features
- Spring Return Safety Function: Integrated spring mechanism provides automatic fail-safe positioning during power interruption.
- Precise Modulating Control: Supports 2…10 V control signals with optional 4…20 mA input using an external resistor.
- Compact Torque Output: Delivers 35 in-lb of torque suitable for small to medium-sized air control dampers.
- Selectable Direction Of Rotation: Motor and fail-safe direction can be configured through mounting orientation and onboard switch.
- Integrated Position Feedback: Provides 2…10 V feedback signal for accurate damper position monitoring.
- Quiet Operation: Low motor noise level of 30 dB(A) supports use in noise-sensitive HVAC environments.
- Durable And Protected Design: IP54 and NEMA 2 ratings protect internal components from dust and incidental moisture.
The LF24-SR US delivers the reliability and precision required for safe and accurate damper control in commercial HVAC systems.
