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BELIMO
BELIMO EFB24-SR Spring Return Fail-Safe, On/Off Damper Control Actuator w/ DC Motor, 24 VAC/DC
EFB24-SR
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BELIMO EFB24-SR Spring Return Fail-Safe, On/Off Damper Control Actuator w/ DC Motor, 24 VAC/DC
2
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5
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Your Price:
$875.99
Retail Price:
$998.40
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Belimo EFB24-SR 24V S/R 270# 2-10VDC
Part Number:
EFB24-SR-nu
Availability:
4 IN STOCK
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Description
Customer Reviews
Specifications
For proportional modulation of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. 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. The actuator operates in response to a 2 to 10 VDC, or with the addition of a 500 ohm resistor, a 4 to 20 mA control input from an electronic controller or positioner. A 2 to 10 VDC feedback signal is provided for position indication. Not to be used for a master-slave application.
The EFB24-SR uses a brushless DC motor which is controlled by an Application Specific Integrated Circuit (ASIC) and a microprocessor. The microprocessor provides the intelligence to the ASIC to provide a constant rotation rate and to know the actuator’s exact fail-safe position. The ASIC monitors and controls the brushless DC motor’s rotation and provides a digital rotation sensing function to prevent damage to the actuator in a stall condition. The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches.
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Average Customer Ratings
5.0
perfect fit, fast shipping. excellent
Product working very well. No Complaints.
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Reviewed by:
Gregg
from Rhode Island on 12/11/2018
5
Actuator Type:
Two Position
Fail Safe Mode:
Spring Return
Power Supply:
24 VDC +20% / -10%
24 VAC +/- 20%
Torque:
270 lb-in
Running Time:
75 Seconds
20 sec @ -4°F to 122°F (spring)
< 60 sec @ -22°F (spring)
Power Consumption:
4.5 W (holding)
9.5W (running)
VA Rating:
16 VA
Ambient Temperature:
-22°F to +122°F
Control Input Values:
On/Off
Manual Override:
Yes
Direction of Rotation:
Reversible w/ cw/ccw mounting
Warranty:
5-Year Limited Warranty
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