Description
Schneider Electric (Barber Colman) MS40-7043-501 Overview
The Schneider Electric (Barber Colman) MS40-7043-501 is a 24V proportional spring-return damper actuator engineered for reliable, fail-safe performance in commercial and industrial HVAC applications. With 35 lb-in of torque and a direct-mount design, this actuator simplifies installation while delivering precise, modulating damper control.
Key Features
- 24V AC/DC operating voltage for broad system compatibility
- 35 lb-in torque output for dependable damper positioning
- Proportional (modulating) control for accurate, continuous airflow regulation
- Spring-return (SR) fail-safe mechanism — returns damper to a safe position on power loss
- Integrated auxiliary switch (W/SW) for end-position feedback and system interlock capability
- Direct-mount (DirMt) design for fast, straightforward installation without additional linkage hardware
- Part of the trusted MS40 series from Schneider Electric (formerly Barber Colman)
Applications
- Commercial HVAC air handling units (AHUs)
- Variable air volume (VAV) systems
- Economizer and outdoor air damper control
- Building automation and energy management systems
- Exhaust, return, and mixed-air damper applications
Why Choose the MS40-7043-501?
The spring-return function ensures your system defaults to a predetermined safe position during a power interruption, protecting building occupants and equipment. The built-in auxiliary switch provides valuable end-position feedback for sequencing, alarming, or interlocking with other building automation system components. The direct-mount configuration reduces installation time and eliminates the need for external linkage kits, making this actuator a cost-effective solution for new construction and retrofit projects alike.
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