UPC: 711426310276
MA-418-500 Schneider Electric Damper Actuator User Guide
Overview
The MA-418-500 is a two-position, spring-return damper actuator rated for 120 VAC operation. It delivers 60 in-lb torque, with built-in auxiliary switch to support integration with control systems. This actuator is typically used for controlling dampers or valves in HVAC, airflow, and building automation systems, especially where a return-to-default position on power loss is required.
Features
Two-position actuator (0° ↔ 180° rotation)
Spring return (SR) to default position when de-energized
120 VAC supply
60 in-lb output torque
Integrated SPDT auxiliary switch (for feedback or system interlock)
Tamper-resistant sealed housing
Designed for horizontal output shaft mounting
Durable cast-aluminum and gear-drive construction
Compatible with standard damper linkages and shafts
Actuator: (MA-418-500):
- Actuator Type: Electric
- Control Signal: 2-Position (On/Off)
- Loss of Power Type: Spring Return
- Power Input Voltage: 120 VAC
- Leads and Connections: Terminal Block
- Torque: 60 in-lb
- Mechanical Movement: Rotary
- Auxiliary Switch: 1 SPDT
- Protection Rating: NEMA 1
- Product Line: Schneider Electric
- Product Range: Gear Train
- Product Series: MAx-4xx
- Actuator Use: Dampers, Globe Valves
| Actuator Type | Electric |
| Actuator Use | Dampers |
| Globe Valves | |
| Auxiliary Switch | 1 SPDT |
| By Schneider | Yes |
| California Residents | |
| Control Signal | 2-Position (On/Off) |
| IP Protection Rating | IP10 |
| Leads and Connections | Terminal Block |
| Loss of Power Type | Spring Return |
| Mechanical Movement | Rotary |
| Power Input Frequency | 60 Hz |
| Power Input Voltage | 120 VAC |
| Product Range | Gear Train |
| Product Series | MAx-4xx |
| Rotation | 180 degrees |
| Torque | 6.78 Nm |
| 60.01 in-lb |
Applications
Used broadly in HVAC and building automation systems, the MA-418-500 is ideal for:
Damper control in air handling units
Zone control dampers in ventilation systems
Smoke or fire damper actuation (where spring-return is needed)
Integration in BMS / control loops requiring auxiliary feedback
Retrofit or replacement for faulty two-position damper actuators
Its design ensures safe movement and reliable return to a fail-safe position when power is lost.
Benefits
Reliable fail-safe operation through spring return
Auxiliary switch enables monitoring or interlock integration
Durable construction suited for industrial HVAC environments
Easy installation with standard shaft and linkage compatibility
Proven performance in two-position damper applications




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