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SKU: CS2547167MPN: AFB24

Damper Actuator, 180 in-lb [20 Nm], Spring return, AC/DC 24 V, On/Off

Product Details

Features:

  • Cut labor costs with simple direct coupling
  • True mechanical spring return - the most reliable fail-safe
  • Reverse mount for clockwise or counterclockwise fail-safe
  • Check damper position easily with clear position indicator
  • Overload-proof throughout rotation
  • Temporary restrictions in damper movement will not change actuator operation. Actuator returns to normal operation when restriction is removed (modulating actuators)
  • By eliminating internal condensation Golden Point breather membrane optimizes performance in harsh airstream environments
  • Built-in auxiliary switch is easy to use, offers feedback or signal for additional device (-S models)
  • Manual override crank speeds installation
  • Need to change control direction? Do it easily with a simple switch (modulating actuators)
  • Microprocessor-controlled brushless DC motor increases actuator life span and reliability, provides constant running time (modulating actuators)
  • Rugged metal housing withstands rough handling in the mechanical room
  • 3 ft. appliance cable and conduit connector eases installation
  • Double insulated - no need for separate safety ground. A Belimo exclusive (-S,120V, 230V models)
  • Automatically compensates for damper seal wear, ensuring tight close-off

The AFB24 is used for On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. Control is On/Off from an auxiliary contact, or a manual switch.

The AFB series actuators provide true spring return operation for reliable fail-safe application and positive close off on air tight dampers. The spring return system provides consistent torque to the damper with, and without, power applied to the actuator.

Attributes

Control On/Off
Fail-Safe Spring Return
Torque 180 in-lb
Nominal Voltage AC/DC 24 V
Transformer Sizing 7.5 VA (class 2 power source)
Enclosure UL Enclosure Type 2
Power Supply 24 VAC, ±20%, 50/60 Hz, 24 VDC, -10% / +20%
Power Consumption In Operation 5 W
Power Consumption In Rest Position 2.5 W
Electrical Connection 18 GA appliance cable, 3 ft [1 m], with ½” conduit connector
Overload Protection electronic throughout 0…95° rotation
Angle Of Rotation 95°, adjustable with mechanical end stop, 35…95°
Direction Of Motion Motor selectable by ccw/cw mounting
Position Indication Mechanical
Running Time (Motor) 75 s
Running Time Fail-Safe <20 s
Ambient Humidity max. 95% r.H., non-condensing
Ambient Temperature -22…122°F [-30…50°C]
Storage Temperature -40…176°F [-40…80°C]
Degree Of Protection Iec/En IP54
Degree Of Protection Nema/Ul NEMA 2
Connection cable
Servicing maintenance-free
Housing Material Galvanized steel and plastic housing
Nominal Voltage Dc 24 V
Nominal Voltage Ac 24 V
Noise Level, Motor 50 dB(A)
Torque Motor 180 in-lb [20 Nm]
Electrical Protection actuators are double insulated
Quality Standard ISO 9001
Noise Level, Fail-Safe 62 dB(A)
Agency Listing cULus listed to UL60730-1A:02; UL 60730-2-14:02 and CAN/CSA-E60730-1:02; Listed to UL 2043 - suitable for use in air plenums per Section 300.22© of the NEC and Section 602.2 of the IMC
Shaft Diameter ½…1.05” round, centers on ½” and ¾” with insert, 1.05” without insert
Fail-Safe Function Spring return
Control Type Web On/Off
Fail-Safe YES

Specifications

SKUCS2547167
MPNAFB24