Belimo AFBUP
Damper Actuator, 180 in-lb [20 Nm], Spring return, AC 24...240 V / DC 24...125 V, On/Off




Product Details
Application
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 actuator is mounted directly to a damper shaft up to 1.05\°, in diameter by means of its universal clamp. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft.
Operation
The AFB and AFX 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 constant torque to the damper with, and without, power applied to the actuator. The AFB and AFX series provides 95° of rotation and is provided with a graduated position indicator showing 0° to 95°. The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches. The switching function at the fail-safe position is fixed at +10°, the other switch function is adjustable between +10° to +90°. The AFBUP, AFBUP-S, AFXUP and AFXUP-S actuator is shipped at +5° (5° from full fail-safe) to provide automatic compression against damper gaskets for tight shut-off.
Attributes
| Control | On/Off |
| Fail-Safe | Spring Return |
| Torque | 180 in-lb |
| Nominal Voltage | AC 24…240 V / DC 24…125 V |
| Transformer Sizing | 7 VA @ AC 24 V (class 2 power source), 8.5 VA @ AC 120 V, 18 VA @ AC 240 V |
| Enclosure | UL Enclosure Type 2 |
| Power Supply | 24…240 VAC, -20% / +10%, 50/60 Hz, 24…125 VDC, ±10% |
| Power Consumption In Operation | 7 W |
| Power Consumption In Rest Position | 3.5 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…125 V |
| Nominal Voltage Ac | 24…240 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
| SKU | CS2709819 |
|---|---|
| MPN | AFBUP |











