MS4120F; MS4620F; MS8120F; S2024-F; S20230-F FAST-ACTING, TWO-POSITION ACTUATORS
Design Life (at Rated Voltage): 30,000 full stroke cycles.
SPECIFICATIONS
Minimum Damper Shaft Length:
1 in. (25 mm); 3-1/4 (83 mm) recommended.
Models: See Tables 1, 2, and 3.
Table 1. Models.
Voltage Internal Auxiliary
Cycling Requirements:
Prolonged holding-period (1 year) testing of these actuators
has been performed with no spring return failures. The
actuator and the internal spring are designed to require no
special cycling during long-term holding.
Model
MS4120F1006
in Vac
Switches
None
2 SPST
None
120
Honeywell recommends following all local, state and national
codes for periodic testing of the entire smoke control
system. Refer to National Fire Protection Association
(NFPA) National Fire Codes®: NFPA90A, NFPA92A and
NFPA92B for your application.
NFPA recommends periodic examination of each fire/smoke
damper (semi-annually or annually) to ensure proper
performance.
a
MS4120F1204
120
MS4620F1005
MS4620F1203
230
230
a
2 SPST
None
MS8120F1002
MS8120F1200
24
24
a
2 SPST
None
S2024-F (MS8120S1006)
S20230-F (MS4620S1009)
24
Mounting: Self-centering shaft adapter.
Round Damper Shafts: 0.5 to 1.06 in.
230
Square Damper Shafts: 1/2 to 3/4 in.
Actuator can be mounted with shaft in any position.
a
S2024-F-SW2 (MS8120S1204) 24
S20230-F-SW2 (MS4620S1207) 230
2 SPDT
IMPORTANT
a
Internal switches are designed to pass UL555S
requirements (at 350°F).
•
Honeywell does not recommend using linkages with
these actuators because side-loading of the output
hub reduces actuator life.
Dimensions: See Fig. 1.
•
3/4 in. or greater shaft diameter recommended.
Device Weight:
MS4120F, MS4620F, S20230-F: 7.5 lb (3.4 kg)
MS8120F, S2024-F: 6.25 lb (2.8 kg)
Noise Rating at 1m (Maximum):
Driving or Spring Return: 70 dBA.
Holding: 20 dBA (no audible noise).
Stroke: 95° ± 3°, mechanically limited.
Vibration:
Not suitable for high vibration applications (Example installa-
tion environment: Truck Trailers or Railroad Cars)
Acceptable Vibration Levels 0.6g at 30 to 300 Hz.
Electrical Ratings:
Power Input:
MS4120F: 120 Vac ±10%, 60 Hz.
MS4620F,S; S20230-F: 230 Vac ±10%, 50/60 Hz.
MS8120F,S; S2024-F: 24 Vac +20%, -10%, 50/60 Hz
(Class 2).
Temperature Ratings:
Ambient: -40°F to 130°F (-40°C to 55°C).
Shipping and Storage: -40°F to 140°F (-40°C to 60°C).
Power Consumption:
MS4120F: Driving: 0.35A, 35W. Holding: 0.15A, 10W.
MS4620F,S; S20230-F:
Driving: 0.20A, 35W. Holding: 0.14A, 10W.
MS8120F,S; S2024-F: Driving: 45 VA. Holding: 10 VA.
IMPORTANT
The actuator is designed to meet UL555S standards
at 350°F (176°C). The actuator must be tested with
the damper to achieve this rating.
Electrical Connections:
NOTE: The actuator is designed to operate for 30 min-
utes during a one-time excursion to 350°F
(176°C).
Lead Wires:
MS4120F, MS4620F, MS8120F: 1m Teflon wire.
MS4620S, MS8120S, S2024-F, S20230-F: 1m halogen-
free, silicone-free wire.
Humidity Ratings: 5% to 95% RH noncondensing.
Two integral 3/8 in. flexible conduit connections.
Environmental Protection Ratings:
NEMA2 and IP54 when mounted on a horizontal shaft and the
base of the actuator below the shaft.
Timing (At Rated Torque and Voltage):
Drive Open: 15 seconds typical.
Spring Close: 15 seconds typical.
Accessories:
205649 Mounting Bracket (not supplied with actuator).
Auxiliary Switches:
Dry Contact
Ratings (maximum load): 250 Vac, 5A resistive.
Settings (fixed): 7° nominal stroke, 85° nominal stroke.
Approvals: See Table 4.
Controller Type:
MS4120F: Line voltage (120 Vac), 2-position, spst (Series 40).
MS4620F,S; S20230-F: Line voltage (230 Vac), 2-position,
spst (Series 40).
MS8120F,S; S2024-F: Low voltage (24 Vac), 2-position, spst
(Series 80).
Torque Rating (at Rated Voltage):
Typical Holding (minimum at 350°F): 175 lb-in. (20 Nm).
Spring Return (minimum at 350°F): 175 lb-in. (20 Nm).
Stall Maximum (fully open at 75°F): 425 lb-in. (48.0 Nm).
350°F Minimum Driving: 175 lb-in. (20 Nm).
63-2584—10
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