EFB24 N4 | Damper Actuator | 270 in-lb | Spg Rtn | 24V | On/Off | NEMA 4 | Belimo
$688.05
Brand: BelimoSKU: EFB24 N4
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$1,529.00
$688.05
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EFB24 N4 | Damper Actuator | 270 in-lb | Spg Rtn | 24V | On/Off | NEMA 4 | Belimo

Belimo | EFB24 N4
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Overview

Details for EFB24 N4

Damper Actuator | 270 in-lb | Spg Rtn | 24V | On/Off | NEMA 4

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. Maximum of two EF’s can be piggybacked for torque loads of up to 540 in-lbs. Minimum 3/4” diameter shaft and parallel wiring.

Operation

The EF..24 N4 series actuators provide true spring return operation for reliable failsafe 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 EF..24 N4 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 EF..24 N4 actuator is shipped at 5° (5° from full fail-safe) to provide automatic compression against damper gaskets for tight shut-off.


Specifications

Actuator Type
Spring return
Angle of Rotation
95
Control Type
On/Off
Degree of Protection
IP66 NEMA 4 UL Enclosure Type 4
Direction of Rotation (Fail-Safe)
Reversible with cw/ccw mounting
Electrical Connection
terminals
Manual Override
5 mm hex crank (3/16" Allen) supplied
Power Consumption (Holding)
4.5 W
Power Consumption (Running)
9.5 W
Running Time (Fail-safe)
<20 s
Running Time (Motor)
75 s / 90B0
Safety Function
YES
Torque
270 in-lb [30 Nm]
Voltage AC/DC
AC/DC 24 V

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