Overview
The Belimo EFB24-S N4 is a NEMA 4 rated high-torque spring return damper actuator designed for fail-safe on/off control and status feedback in outdoor or wet locations.
Features
- NEMA 4 / IP66 weather-resistant housing withstands dust, water spray, and weather exposure
- 270 in-lb torque rating handles heavy outdoor intake/exhaust dampers
- Integrated auxiliary switches enable end-position verification
- Mechanical spring return ensures reliable fail-safe action during power outages
Specifications
- Torque: 270 in-lb [30 Nm]
- Nominal Voltage: AC/DC 24 V
- Control Type: On/Off
- Actuator Type: Spring Return with Auxiliary Switch
- Enclosure Rating: NEMA 4 / IP66
Applications
- Rooftop intake and exhaust damper control in severe weather conditions
- Industrial and washdown facility ventilation control



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