Belimo FSAFB24-SR-S Fire & Smoke Actuator Datasheet

Technical data sheet for Belimo's FSAFB24-SR-S fire and smoke actuator, including power specs, torque, dimensions, wiring, and installation notes.


Belimo FSAFB24-SR-S Fire & Smoke Actuator Datasheet - cover page
Brand
Belimo
Document type
Datasheet
Language
English
Pages
2
File format
PDF
File size
1 MB
Published
05 November, 2026
Updated
05 November, 2026
MD5 checksum
1F54C2E02137200A1C51FD7018C70E90

About this manual

This datasheet details the electrical and mechanical specifications of the Belimo FSAFB24-SR-S Fire & Smoke Actuator, including power supply options, torque, rotation range, and housing ratings. It provides wiring diagrams and installation guidelines for use in fire and smoke damper applications. The actuator features a brushless DC motor, digital rotation sensing, and a fail-safe spring return mechanism. Accessories and mounting options are also described for integration into HVAC systems.

What's inside

  • Power Supply
  • Power Consumption
  • Shaft Diameter
  • Electrical Connection
  • Overload Protection
  • Operating Range
  • Feedback Output
  • Torque
  • Direction of Rotation
  • Position Indication

Specifications

Power Supply24 VAC, ±20%, 50/60 Hz, 24 VDC, -10% / +20%
Power Consumption (Running)6 W, 9.5 VA
Power Consumption (Holding)3 W, 5 VA
Shaft Diameter1/2” to 1.05” round, centers on 1/2” and 3/4” with insert, 1.05” without insert
Operating Range (Input)2 to 10 VDC, 4 to 20 mA w/ ZG-R01 (500 Ω, 1/4 W resistor)
Torque180 in-lbs [20 Nm]
Angle of Rotation95°, adjustable with mechanical end stop, 35° to 95°
Ambient Temperature Range-22...122 °F [-30...50 °C]
Housing RatingIP54, NEMA 2, UL
Weight4.9 lb. [2.25 kg]

Frequently asked questions

What is the operating voltage range for the FSAFB24-SR-S actuator?

It operates on 24 VAC, ±20%, 50/60 Hz, or 24 VDC, -10% / +20%.

What is the torque output of the actuator?

The torque is 180 in-lbs [20 Nm].

What is the rotation range of the actuator?

It rotates 95°, adjustable with mechanical end stop, from 35° to 95°.

What is the housing protection rating?

The housing is rated IP54, NEMA 2, and UL.

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