Honeywell MS4103 Manual Do Utilizador

94

ML4115; ML8115

Spring return direct coupled 
actuators (DCA) for on/off damper 
control with an integral junction box. 
The actuator accepts an on/off 
signal from a single-pole, single-
throw (SPST) controller. They are 
designed to operate reliably in 
smoke control systems requiring 
Underwriter's Laboratories Inc. 
UL555S ratings up to 350 F.

Actuator Type ....................................... Damper

Rotational Stroke  .................................. 95 ±3 degrees

Fail Safe Mode  ..................................... Spring Return

Rated Torque ........................................ 30 lb-in. (3.4 Nm)

Maximum Stall Torque .......................... 150 lb-in. (17 Nm)

Minimum Driving Torque at 350 F  ........  30 lb-in. (3.4 Nm)

Spring Return Torque  ........................... 30 lb-in. (3.4 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 in. square or round

(10 to 13 square/round)

Shaft Adapter Type  .............................. Aluminum Hub, two set screws

Supply Voltage  ..................................... 120 Vac ±10%

Materials ............................................... Aluminum housing

Operating Humidity Range (% RH) ...... 5 to 95% RH, non-condensing

Ambient Temperature Range  ............... 0 F to +30 F (-18 C to 55 C)

Storage Temperature Range ................ -40 F to 140 F (-40 C to 60 C)

Weight  ..................................................  6 lb (2.72 kg)

Includes  ............................................... Ground Screw

Comments ............................................ Integral junction box with three 

7/8 in. conduit openings 

(fittings not included)

Underwriters Laboratories, Inc.  ........... UL873, Plenum Rated

Canadian Underwriters Laboratories, Inc. cUL C22.2 No. 24-93

• Integral spring return. 
• No audible noise during holding. 
• Electronic circuitry provides efficient operation while 

eliminating the need for limit switches. 

• Ninety-five degree angle of rotation for tight damper 

closure. 

• Die-cast aluminum housing. 
• Housing design allows flush mounting to damper. 
• Integral junction box with three conduit openings eliminates 

need for separate wiring box. 

• Mounts to 3/8 or 1/2 in. round or square shaft. 
• High-temperature indicator included.

2 (51)

1 (25)

5/8 

(17)

6 3/8

(161)

7 1/2 

(192)

4 (102)

7/8 (22)

5 1/8 (129)

2 (51)

3 5/16 (84)

1/16 (2)

M13053A

ML4115/ML8115 HAVE SMALLER 

HUB WITH TWO SET SCREWS.

ML4105/ML8105 HAVE LONGER 

HUB WITH FOUR SET SCREWS.

1

1

Fire And Smoke Actuator

ml4115; ml8115