MS4120F; MS4620F; MS8120F; S2024-F; S20230-F FAST-ACTING, TWO-POSITION ACTUATORS
63-2584—10 2
SPECIFICATIONS
Models: See Tables 1, 2, and 3.
Table 1. Models.
a
Internal switches are designed to pass UL555S
requirements (at 350°F).
Dimensions: See Fig. 1.
Device Weight:
MS4120F, MS4620F, S20230-F: 7.5 lb (3.4 kg)
MS8120F, S2024-F: 6.25 lb (2.8 kg)
Stroke: 95° ± 3°, mechanically limited.
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).
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.
Electrical Connections:
Lead Wires:
MS4120F, MS4620F, MS8120F: 1m Teflon wire.
MS4620S, MS8120S, S2024-F, S20230-F: 1m halogen-
free, silicone-free wire.
Two integral 3/8 in. flexible conduit connections.
Timing (At Rated Torque and Voltage):
Drive Open: 15 seconds typical.
Spring Close: 15 seconds typical.
Auxiliary Switches:
Dry Contact
Ratings (maximum load): 250 Vac, 5A resistive.
Settings (fixed): 7° nominal stroke, 85° nominal stroke.
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).
Design Life (at Rated Voltage): 30,000 full stroke cycles.
Minimum Damper Shaft Length:
1 in. (25 mm); 3-1/4 (83 mm) recommended.
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.
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.
Mounting: Self-centering shaft adapter.
Round Damper Shafts: 0.5 to 1.06 in.
Square Damper Shafts: 1/2 to 3/4 in.
Actuator can be mounted with shaft in any position.
IMPORTANT
• Honeywell does not recommend using linkages with
these actuators because side-loading of the output
hub reduces actuator life.
• 3/4 in. or greater shaft diameter recommended.
Noise Rating at 1m (Maximum):
Driving or Spring Return: 70 dBA.
Holding: 20 dBA (no audible noise).
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.
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).
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.
NOTE: The actuator is designed to operate for 30 min-
utes during a one-time excursion to 350°F
(176°C).
Humidity Ratings: 5% to 95% RH noncondensing.
Environmental Protection Ratings:
NEMA2 and IP54 when mounted on a horizontal shaft and the
base of the actuator below the shaft.
Accessories:
205649 Mounting Bracket (not supplied with actuator).
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).
Model
Voltage
in Vac
Internal Auxiliary
Switches
MS4120F1006 120 None
MS4120F1204 120
2 SPST
a
MS4620F1005 230 None
MS4620F1203 230
2 SPST
a
MS8120F1002 24 None
MS8120F1200 24
2 SPST
a
S2024-F (MS8120S1006) 24 None
S20230-F (MS4620S1009) 230
S2024-F-SW2 (MS8120S1204) 24
2 SPDT
a
S20230-F-SW2 (MS4620S1207) 230
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