Overview
The Belimo EFB24-SR-S N4 is a NEMA 4 rated spring return damper actuator featuring integrated auxiliary switching for fail-safe modulating damper control in demanding environments.
Features
- Built-in auxiliary switch for status feedback and system interlocks
- NEMA 4 protected housing for resistance against water and dust ingress
- High torque output and spring return fail-safe design
Specifications
- Torque: 270 in-lb [30 Nm]
- Nominal Voltage: AC/DC 24 V
- Control Type: Modulating (2…10 VDC)
- Auxiliary Switch: Integrated SPDT switch
- Degree of Protection: NEMA 4
Applications
- Outdoor air dampers requiring position signaling and fail-safe operation
- Industrial and harsh environment HVAC ductwork



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