Accessory List

MC-351, MC-421, MC-431, MC-4311, MC5-4311
90
© Copyright 2006 TAC. All Rights Reserved. F-27382-1
Two-Position, Non-Spring Return Actuators
Model Chart
Specifications
This actuator provides two-position operation of
dampers or valves in heating, ventilating, and air
conditioning systems, and similar applications
where return-to-normal position is not required.
Features:
• Two-position actuators controlled by SPDT controller.
• Non-spring return.
• 24, 120, and 240 Vac models available.
• SPDT auxiliary switch is standard.
• Rugged die cast aluminum housings.
• Oil immersed motor and gear train.
Model No.
Input
No Load Timing (sec/180°)
Rated Torque lb-in.
(N-m)
Volts Hz Watts VA Rating
MC-351 24 60 28 53 70 220 (25)
MC-421 120 60 50 96 20 175 (19)
MC-431 120 60 50 96 30 220 (25)
MC-4311 240 60 50 96 30 220 (25)
MC5-4311
a
a
No CSA on MC5-4311.
240505096 36 220 (25)
Control Circuit Three wire, SPDT snap-acting switch provided by a thermostat, pressure switch, or relay.
Shaft Rotation Unidirectional clockwise 180° when power is applied.
Auxiliary Switch Adjustable SPDT is standard. Factory set to make (or break) at mid-stroke.
Nominal Damper Ares Actuator sizing should be done in accordance with damper manufacturer’s specifications.
Environment
Ambient temperature limits
Shipping and storage: -40 to 136°F (-40 to 58°C).
Operating: -40 to 136°F (-40 to 58°C).
Humidity 5 to 95% RH, non-condensing.
Locations NEMA Type 1. NEMA 4 with AM-363.
Connections Coded screw terminals.
Case Die cast aluminum with two 1/2 in. conduit knock-outs on each side.
Mounting Allow 6 in. (152 mm) clearance above the actuator wiring compartment.
Dampers Any position.
Valves In any upright position with actuator above the center line of the valve body.
Dimensions 7 H x 5-3/8 W x 6-5/16 D in. (178 x 137 x 160 mm).
Options Hazardous locations: specify MC6-431, MC6-4311 (60 Hz), MC7-4311 (50 Hz).
General Instructions Refer to F-08366.
Adjustable Auxiliary Switch SPDT Rating Amps.
Type 120 V 240 V
Running 5.8 2.9
Locked Rotor 34.8 17.4
Non-Inductive 12.0 6.0
MC
-
351
,
M
421,
MC-431,
MC-4311,
MC5-4311