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Direct Coupled Damper Actuator—Spring Return
ML4135; ML8135
HVAC, Fast-Acting, Two-Position Actuators, 40 lb-in
The ML8135 Fast-Acting, Two-Position Actuators are spring return
direct coupled actuators (DCA) with an integral junction box for
on/off damper control.
• Integral spring return
• -40 C to 130 F (-40 C to 54 C) operating temperature range
• No audible noise during holding
• Electronic circuitry provides efficient operation while
eliminating the need for limit switches
• Ninety-five degree angle of rotation
• Die-cast aluminum housing
• Housing design allows flush mounting to damper
• Integral junction box with three conduit openings eliminates
need for separate wiring box
• Direct mounting to 3/8 or 1/2 in. round or square shaft
• Not intended for smoke control systems
Actuator Type: Damper
Rotational Stroke: 95 ±3 degrees
Fail Safe Mode: Spring Return
Torque Rating: 40 lb-in. (4.5 Nm)
Spring Return Torque: 40 lb-in. (4.5 Nm)
Dimensions, Approximate: 7.5 in high x 5.13 in wide x 3.32 in deep
(192 mm high x 129 mm wide x 84 mm deep)
External Auxiliary Switches Available: Yes, 32003532-005
Number of Internal Auxiliary Switch: 0
Electrical Connections: Two color-coded leads
Electrical Connection Length: 16 in. (406 mm)
Environmental Rating: NEMA1
Frequency: 60 Hz
Mounting: Direct Coupled
Maximum Noise Rating, Holding (dBA @ 1m): 20 (no aud ble noise)
Maximum Noise Rating, Driving (dBA @ 1m): 65
Compatible Damper Shafts: 3/8 to 1/2 in. square or round
(10 to 13 mm square/round)
Shaft Adapter Type: Aluminum Hub, four set screws
Materials: Aluminum housing
Operating Humidity Range (% RH): 5 to 95% RH, non-condensing
Ambient Temperature Range: x-40 F to +130 F (4.5 Nm)
Storage Temperature Range: -40 F to +140 F (-18 C to +60 C)
Weight: 6 lb (2.72 kg)
Comments: Integral junction box with three 7/8 in. conduit openings
(fittings not included)
Approvals
Underwriters Laboratories, Inc: UL873, Plenum Rated
Canadian Underwriters Laboratories, Inc: cUL C22.2 No. 24-93
Commercial
Timing (seconds) Power Consumption
Maximu
m
Product Number Control Signal
ML4135A1007/U Two position; SPST 25 sec 20 sec 15 sec 0.18A, 18W 0.11A, 9W 120 Vac ±10% Mounting bracket,
ML4135B1006/U Two position; SPST 25 sec 20 sec 15 sec 0.18A, 18W 0.11A, 9W 120 Vac ±10% Mounting bracket,
ML8135A1003/U Two position; SPST 25 sec 20 sec 15 sec 18 VA 8.5 VA 24 Vac +20%, -10% Mounting bracket CCW
ML8135B1002/U Two position; SPST 25 sec 20 sec 15 sec 18 VA 8.5 VA 24 Vac +20%, -10% Mounting bracket CW
Driving
@ 60 Hz
Nominal
Driving
@ 60 Hz
Maximum
Spring
Return
(sec) Driving Holding
Supply Voltage Includes
ground screw
ground screw
Spring
Return
Direction
CCW
CW
Components
70-6910 387
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