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Schneider Electric MA-3xx Series, MA-4xx Series Two-Position, Oil-Submerged Actuators

Two-Position, Oil-Submerged Actuators
MA-3xx Series, MA-4xx Series

These actuators provide two-position operation of dampers, valves, and other equipment requiring the return to normal position upon power interruption.

• SPST controller.
• Spring return.
• 24, 120, 208, and 240 Vac models.
• SPDT auxiliary switch if actuator part number suffix is “-500.”
• Rugged die cast aluminum.
• Oil immersed motor and gear train.

Select a link under the "item" tab below to order.

Cat #Model:HzvacAux.a SwitchInput (Watts)Va Running/ HoldingRated Torque lb-in.(N-m)Application and MountingShaft Rotation
MA-305Model chart6024No2556/5616 (1.8)Damper actuators. Upright position preferred.CW 180 when power is applied.
MA-305-500Model chart6024Yes2556/5616 (1.8)Damper actuators. Upright position preferred.CW 180 when power is applied.
MA-405Model chart60120No2548/4816 (1.8)Damper actuators. Upright position preferred.CW 180 when power is applied.
MA-405-500Model chart60120Yes2548/4816 (1.8)Damper actuators. Upright position preferred.CW 180 when power is applied.
MA-318Model chart6024No70 Running 25 Holding92/3260 (6.8)Damper and valve actuators. Output shaft horizontalCW 170 when power is applied.
MA-318-500Model chart6024Yes70 Running 25 Holding92/3260 (6.8)Damper and valve actuators. Output shaft horizontalCW 170 when power is applied.
Inputs:
Control signal: Two-Position SPST
Power: See Model Chart. All 24 Vac circuits are Class 2. All circuits 30 Vac and above are Class 1
Connections: 3 ft (91 cm) appliance or plenum cables, enclosure accepts 1/2 in. (13 mm) conduit connector. For M20
Metric conduit, use AM-756 adapter
24 Volt models: 10 ft. plenum cable
Outputs:
Mechanical: Timing: See Model Chart
Travel: 93o nominal
Manual Override: Allows positioning of damper or valve using manual crank
Environment:
Ambient temperature limits: Shipping and Storage: -40 to 160


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