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Honeywell ML4125 HVAC, Fast-Acting, Two-Position Actuators

HVAC, Fast-Acting, Two-Position Actuators

The 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.

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Cat #IncludesControl SignalSpring Return DirectionMaximum Driving @ 60 HzNominal Driving @ 60 HzMaximum Spring ReturnDrivingHoldingSupply VoltageNumber of Internal Auxiliary Switch
ML4125A1008Ground ScrewTwo position; SPSTCCW40 sec25 sec25 sec0.16A, 15W0.10A, 5W120 Vac +10%,-15%0
ML4125B1007Ground ScrewTwo position; SPSTCW40 sec25 sec25 sec0.16A, 15W0.10A, 5W120 Vac +10%,-15%0
ML4125C1006Mounting bracketTwo position; SPSTCCW40 sec25 sec25 sec0.12A, 18.6W0.10A, 7W230 Vac ±10%0
ML4125D1005Mounting bracketTwo position; SPSTCW40 sec25 sec25 sec0.12A, 18.6W0.10A, 7W230 Vac ±10%0
Actuator Type Damper; Valve
Rotational Stroke 95 ±3 degrees
Fail Safe Mode Spring Return
Torque (11.3 Nm) 100 lb-in.
Maximum Stall Torque 240 lb-in. (27 Nm)
Spring Return Torque 100 lb-in. (11.3 Nm)
External Auxiliary Switches Available Yes, 32003532-005
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 audible noise)
Maximum Noise Rating, Driving (dBA @ 1m) 65
Compatible Damper Shafts 3/8 to 1/2 inch square or round (10 to 13 square/round)
Shaft Adapter Type Aluminum Hub, four set screws
Supply Voltage 120 Vac +10%, -15%
Materials Aluminum housing
Ingress Protection Rating
Operating Humidity Range (% RH) 5 to 95% RH, non-condensing
Ambient Temperature Range -40 F to +130 F (-40 C to +55 C)
Storage Temperature Range -40 F to 140 F (-40 C to +60 C)
Weight 6 lb (2.72 kg)
Underwriters Laboratories Inc UL873, Plenum Rated
Underwriters' Laboratories of Canada cUL C22.2 No. 24-93
Comments Integral junction box with three 7/8 in. conduit openings

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