Overview
The Belimo EFB24-SR N4 is a spring return damper actuator housed in a NEMA 4 enclosure, built for modulating fail-safe damper control in outdoor or harsh environments.
Features
- NEMA 4 / IP66 weatherproof housing protects against moisture and dirt
- Spring return fail-safe operation ensures automatic return upon power loss
- Universal shaft clamp allows direct coupling to damper shafts
Specifications
- Torque: 270 in-lb [30 Nm]
- Nominal Voltage: AC/DC 24 V
- Control Type: Modulating (2…10 VDC)
- Degree of Protection: NEMA 4 / IP66
Applications
- Outdoor damper control in commercial HVAC applications
- Air handling unit control in washdown or high-humidity environments



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