Schneider Electric MA-318 Damper/Valve Actuator

Schneider Electric MA-318 Damper/Valve Actuator delivers reliable ON/OFF control for dampers and globe valves. The SPST, 2-position, 2-wire rotary actuator features a spring-return design and runs on 24 Volt AC at 60 Hz for straightforward HVAC integration.

With a clockwise rotation of 170°, it provides precise damper and valve positioning with a robust 60 in-lb torque. The unit consumes 70 W in running mode and 25 W when holding, ensuring efficient operation through repetitive cycles. Built to endure demanding environments, the die-cast aluminum body sits in a NEMA 1 enclosure for reliable indoor use across commercial installations.

The MA-318 is designed for damper and globe valve applications and is UL listed for Canada and US, UL 873, and CSA approvals, confirming compliance with safety standards.

• ON/OFF SPST 2-position operation (2-wire) with spring return
• Rotary actuator with 170° travel and clockwise rotation
• Voltage: 24 V AC; Frequency: 60 Hz; Running: 70 W; Holding: 25 W
• Torque: 60 in-lb; Enclosure: NEMA 1; Body: Die-cast aluminum
• Operating temperature: -40 to 136°F
• Applications: Damper and globe valve actuation
• Certifications: UL (Canada/US), UL 873, CSA