24VAC/DC ON/OFF 53in/lb ACTR| Application | For on/off, fail-safe control of dampers in HVAC systems. Actuator sizing
should be done in accordance with the damper manufacturer's specifi cations.
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. |
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| Servicing | maintenance free |
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| Power Supply | 24VAC �20% 50/60Hz 24VDC �10% |
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| Transformer Sizing | 22VA (class 2 power source) |
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| Electrical Connection | 18 GA plenum rated cable
�" conduit connector
protected NEMA 2 (IP54)
3 ft [1m] 10 ft [3m] 16 ft [5m] |
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| Overload Protection | electronic throughout 0 to 95 rotation |
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| Angle of Rotation | max. 95�, adjustable with mechanical stop electronically variable |
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| Manual Override | external push button |
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| Housing | NEMA2, IP54, UL enclosure type 2 |
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| Position Indication | refl ective visual indicator (snap-on) |
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| Ambient temperature | -22�F to +122�F [-30�C to +50�C] |
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| Humidity | 5 to 95% RH non-condensing (EN 60730-1) |
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| Direction of Rotation | reversible with switch |
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| Bridge Time | 0 second delay before fail-safe activates |
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| Storage temperature | 40�F to +176�F [-40�C to +80�C] |
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| Power consumption | 11W (3W) |
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| Fail-Safe Position | adjustable with dial, 0 to 1 in 10� increments |
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| Agency list | cULus acc. to UL 60730-1A/-2-14
CAN/CSA E60730-1:02
CE acc. to 2004/108/EC and 2006/95/EC |
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| Initial charge | 9 to 15 seconds |
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| Running tim | normal operation |
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| Operation | The NKQ..24-1 actuator provides 95� of rotation and a visual indicator
shows the position of the actuator. When reaching the damper or actuator
end position the actuator automatically stops. The gear can be manually
disengaged by pressing the black button located on the actuator cover. The
NKQ..24-1 actuators use a brushless DC motor, which is controlled by an
Application Specifi c Integrated Circuit (ASIC). The ASIC monitors and controls
the actuators rotation and provides a digital rotation sensing (DRS) function
to prevent damage to the actuator in a stall condition. Power consumption is
reduced in a holding mode. The actuator is electronically protected against
overload. The anti-rotation strap supplied with the actuator will prevent lateral
movement. Add-on auxiliary switches or feedback potentiometers are easily
fastened directly onto the actuator body for signaling and switching functions |
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| Typical Specification | On/off control damper actuators shall be electronic direct-coupled type, which
require no crank arm and linkage and be capable of direct mounting to shaft up
to 1.05" diameter. Actuators shall have Brushless DC motor technology and be
protected from overload at all angles of rotation. Actuators shall have reversing
switch and manual override on the cover. Run time shall be constant and
independent of torque. Actuators shall be cULus listed, have a 5-year warranty,
and be manufactured under ISO 9001 International Quality Control Standards.
Actuators shall be as manufactured by Belimo |
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Product Family
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UPS Hoilday Delivery Schedule
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