800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA341LHX120-SR(-100)(-200)Proportional, Non-Spring Return, Linear Stroke, 120 V, for 2 to 10 VDC or 4 to 20 mALinear Force min. 34lbf for control of damper surfaces up to 11 sq. ft.ApplicationFor on/off and floating point control of dampers in HVAC systems. Actuator sizing shouldbe done in accordance with the damper manufacturer’s specifications.OperationThe actuator is not provided with and does not require any limit switches, but iselectronically protected against overload. The anti-rotation strap supplied with theactuator will prevent lateral movement.The LHX120-SR... series provides 4 or 8 in of linear stroke. The stroke of the gear rack can be adjusted on both sides in increments of 0.8 in [20 mm] by means of themechanical end stops.When reaching the damper or actuator end position, the actuator automatically stops.The gears can be manually disengaged with a button on the actuator cover.The LHX120-SR… actuators use a sensorless brushless DC motor, which is controlledby an Application Specific Integrated Circuit (ASIC). The ASIC monitors and controls theactuator’s rotation and provides a digital rotation sensing (DRS) function to preventdamage to the actuator in a stall condition. Power consumption is reduced in holdingmode.Dimensions (Inches [mm])BAH0.16” [4.15]0.79” [20]N = 0.79”N x 0.79”0.69” [17.4]1.59” [40.4]0.32” [8]0.54” [13.7]0.18” [4.5]0.30” [7.5]2.95” [75]2.01” [51]1.58” [40.1]0.59” [15]0.03” [0.8]0.40” [10.2]0.16” [4]1.09” [27.8]0.40” [10.2]0.13” [3.2]Hub Stroke (H)A4" [100]9.2" [233.5]8" [200]0.3" [8]8" [200]13.1" [333.5]12" [300]0.5" [13]19Technical DataLHX120-SR(-100)(-200)Power supply100 to 240 VAC 50/60 Hz (nominal)85 to 265 VAC 50/60 Hz (tolerance)Power consumption3 W (1.0 W)Transformer sizing4 VA (Class 2 power source)Electrical connection18 GA appliance rated cable1/2” conduit connectorprotected NEMA 2 (IP54)3 ft [1m] 10 ft [3m] 16 ft [5m]Overload protectionelectronic throughout full strokeControlon/off, floating pointInput impedance60 Linear strokeLHX120-SR-1004 in [100 mm]LHX120-SR-2008 in [200 mm]Linear force101 lbf [450 N]Stroke directionreversible with switchManual overrideexternal push buttonRunning time150 seconds per 4" [100mm]Humidity5 to 95% RH non condensing (EN 60730-1)Ambient temperature-22°F to 122°F [-30°C to 50°C]Storage temperature-40°F to 176°F [-40°C to 80°C]HousingNEMA 2, IP54Housing materialUL94-5VAAgency listingscULus acc. to UL 60730-1A/-2-14, CAN/CSA C22.2 No. 24, CE according to#74123IEECNoise level (max)35dB(A)Servicingmaintenance freeQuality standardISO 9001WeightLHX120-SR-1000.81 lbs [0.37 kg]LHX120-SR-2000.86 lbs [0.39 kg]† Rated Impulse Voltage 800V, Type of action 1, Control Pollution Degree 3.40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA342LHX120-SR(-100)(-200)Proportional, Non-Spring Return, Linear Stroke, 120 V, for 2 to 10 VDC or 4 to 20 mAAccessoriesZ-DS1Rotary Support to Compensate Lateral ForcesZ-KSALinear CouplingP370Shaft Mount Auxiliary SwitchNOTE: When using LHB(X)120-SR… actuators, only use accessories listed on this page.Typical SpecificationFloating point, on/off control damper actuators shall be electronic type, withintegrated linear stroking arm. Actuators shall have brushless DC motor technologyand be protected from overload at all positions of linear stroke. Actuators shall havereversing switch and manual override on the cover. Run time shall be constant andindependent of torque. Actuators shall be cUL Approved, have a 5-year warranty, andbe manufactured under ISO 9001 International Quality Control Standards. Actuatorsshall be as manufactured by Belimo.Wiring Diagram1Provide overload protection and disconnect as required.Meets cULus or UL and CSA Standard requirements without theneed of an electrical ground connection.WARNING Live Electrical Components! During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks. Failure to follow all electrical safety precautions when exposed to live electrical compo-nents could result in death or serious injury.368REV_082 to 10 VDC and 4 to 20 mA control40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.Next >