Overview Honeywell MS7505 44 lb-in. (5Nm) torque, spring return direct-coupled, low voltage actuator accepts floating, on/off (SPDT) or modulating (0/2-10 Vdc) control and feedback for air dampers, air handlers, ventilation flaps, louvers and ball valves. Features Brushless DC submotor with electronic stall protection Self-centering shaft coupling for various shaft sizes Available with combined floating and modulating control in a single device and with an internal end switch Access cover facilitates connectivity and durable plastic housing features built-in mechanical end limits Field selectable spring return direction and shaft position indicator and scale UL listed (cUL), CE compliant and plenum rated per UL873 Product Specifications ApplicationHVACDimensions (in.)6 81/54 high x 3 55/84 wide x 3 5/32 deepDimensions (mm)177 mm high x 98 mm wide x 80 deepIncludesMounting bracket, self-centering shaft adapterWeight (lb)3.5 lbWeight (kg)1.6 kgMaterialsPlenum rated plastic housingCommentsIntegral 1/2 in. NPSM conduit connection.MountingDirect CoupledFrequency50 Hz; 60 HzApprovals, Underwriters Laboratories Inc.UL 873Electrical Connections18 AWG color-coded cableOperating Humidity Range (% RH)5 to 95% RH, non-condensingSupply Voltage24 Vac or VdcPower ConsumptionDriving-- 8 VAShipping and Storage Temperature Range (F).-40 F to +150FShipping and Storage Temperature Range (C).-40 C to +65 CApprovals, CEEMC 2004/108/EC; Certification Low Voltage Directive 2006/95/EC; IEC 60730-1 and Part 2-14Approvals, Canadian Underwriters Laboratories Inc.cUL C22.2 No. 24-93Ambient Temperature Range (F).-40 F to +149FAmbient Temperature Range (C).-40 C to +65 CApprovals, C-TickN314Environmental, Electrical or Ingress Protection RatingNEMA 2; IP54Internal Auxiliary Switch0Maximum Noise RatingDriving (dB(A) @ 1m)-- 40; Holding (dB(A) @ 1m)-- 20 (no audible noise)Stroke95 ±3 degreesShaft Dimensions (in.)3/8 to 5/8 in. round or 1/4 to 1/2 in. squareActuator TypeDamper; ValveControl SignalFloating; (0)2-10 Vdc (4-20 mA w/500 ohm resistor); On/Off; SPDTFail Safe ModeSpring ReturnTorque Rating (lb-in.)44 lb-in.Torque Rating (Nm)5 NmSpring Return Torque/Force (lb-in., lbf)44 lb-in.Spring Return Torque/Force (Nm, N)5 NmAdditional Torque Ratings (lb-in.)Maximum Stall-- 105 lb-in.Additional Torque Ratings (Nm)Maximum Stall-- 12 NmExternal Auxiliary Switches AvailableNoRotation to OpenBy switchRotational Stroke AdjustmentMechanically limited 5 degree incrementsCableThreaded conduit connectorTiming, NominalDriving @ 60 Hz-- 90 secSpring Return TimingMaximum-- 25 secFeedback(0)2-10 VdcShaft Adapter TypeSelf-centering clampingManual operationN/AShaft Dimensions (mm)9 to 16 mm round or 6 to 13 mm squareSpring Return DirectionBy orientationInput ImpedanceMin. 95 kOhmElectrical Connections (in.)36 in.Electrical Connections (mm)0.9 m