Honeywell MS4103 manual MS4120F MS4620F MS8120F

Fire And Smoke Actuator

MS4120F; MS4620F; MS8120F

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.

SPECIFICATIONS
Actuator Type	Damper
Rotational Stroke	95 ±3 degrees
Fail Safe Mode	Spring Return
Rated Torque	175 lb-in. (20 Nm)
Maximum Stall Torque	425 lb-in. (48 Nm)
Minimum Driving Torque at 350 F	175 lb-in. (20 Nm)
Spring Return Torque	175 lb-in. (20 Nm)
External Auxiliary Switches Available ..	No
Electrical Connections	Teflon-jacketed cable
Electrical Connection Length	40 in. (1 m)
Environmental Rating	NEMA2
Frequency	60 Hz
Manual operation	Manual crank
Mounting	Direct Coupled
Maximum Noise Rating,
Holding (dBA @ 1m)	20 (no audible noise)
Maximum Noise Rating,
Driving (dBA @ 1m)	70
Compatible Damper Shafts	3/8 to 1.06 round or 3/8 to
	11/16 square (10 to 27 round
	or 10 to 18 square)
Shaft Adapter Type	Self-centering clamping
Supply Voltage	120 Vac ±10%
Materials	Aluminum housing
Ingress Protection Rating	IP54
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	8 lb (3.63 kg)
Includes	Self-centering shaft adapter,
	3mm crank
Comments	Two integral 3/8 in. flexible
	conduit connections
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

FEATURES

•Brush DC sub-motor with electronic stall protection for

2-position models

•Self-centering shaft adapter (shaft coupling) for wide range of shaft sizes

•Models available for use with two-position, single pole single throw (SPST), line- (Series 40) or low- (Series 80) voltage controls

•Metal housing with built-in mechanical end limits

•Spring return direction field-selectable

•Shaft position indicator and scale

•Manual winding capability with locking function

•UL (cUL) listed and CE compliant

•All models are plenum-rated per UL873

DIMENSIONS DIAGRAM

3-15/16 (100) 2 (50)

1-9/16

(40)

10-11/16

(271)

8-5/8

(220)

M20051 1/4 (6) 2-15/16 (75)

96