Submittal Sheet

VBN THREADED CONTROL BALL VALVES AND ACTUATORS
63-4378EFS—04 4
Non-Spring Return Direct Coupled
Actuator
APPLICATION
This non-spring return direct-coupled damper actuator
provides modulating and floating/2-position control for: air
dampers, air handlers, ventilation flaps, louvers, and reliable
control for air damper applications with up to 10 sq. ft./ 44lb.-
in. (5 Nm) and 20 sq. ft./88 lb.-in. (10 Nm) (seal-less damper
blades; air friction-dependent).
FEATURES:
• Declutch for manual adjustment
• Adjustable mechanical end limits
• Access cover includes enclosed screw terminal strip
(22 to 14 AWG) for electrical connections
• Models available with 3 foot 18 AWG color-coded cable
• Mountable in any orientation
• Function selection switch for selecting modulating or
floating/2-position control
SPECIFICATIONS
Actuator Type: Damper; Valve
Rotational Stroke: 95° ±3 degrees
Fail Safe Mode: Non-spring return, Fail in place
Torque: 44 lb-in. (5 Nm)
External Auxiliary Switches Available: Yes, SSW2-1M
Environmental Rating: NEMA2
Frequency: 50 Hz; 60 Hz
Manual operation: Declutch mechanism
Mounting: Direct coupled
Maximum Noise Rating, Driving (dBA @ 1m): 35
Rotation to Open: By switch
Rotational Stroke Adjustment: Dual Integral Adj. Stops
(3 degree increments)
Compatible Damper Shafts: 1/4 to 1/2 in. square or 3/8 to
5/8 in. round (6 to 13 mm square or 8 to 16 mm round)
Shaft Adapter Type: U-bolt clamp
Supply Voltage: 24 Vac +20%, -15%, 24 Vdc
Power Consumption: 5 VA
Materials: Plenum rated plastic housing
Ingress Protection Rating: IP54
Operating Humidity Range (% RH): 5 to 95% RH, non-
condensing
Ambient Temperature Range: -5°F to +140°F
(-20°C to +60° C)
Storage Temperature Range: -22°F to +176°F
(-30°C to +80°C)
Weight: 1 lb (0.45 kg)
Includes: Mounting bracket, screws, shaft adapter, water-tight
strain-relief cable fittings
Comments: Integral 1/2 in. NPSM conduit connection.
Approvals:
CE: 89/336/ECC, 73/23/EEC
C-Tick: N314
Underwriters Laboratories, Inc.: UL873, Plenum Rated
Canadian Underwriters Laboratories, Inc.: cUL C22.2 No.
24-93
Fig. 2. Non-spring return direct coupled actuator
dimensions diagram.
M23103A
5-9/32
(134)
1-5/8
(41)
2-7/16
(62)
2-19/32
(66)
4-1/4
(108)
3-11/32
(85)