Schneider Electric (Barber Colman) Damper Actuators & Accessories

Schneider Electric (Barber Colman) Damper Actuators & Accessories

When it comes to precise, reliable airflow control in commercial and industrial HVAC systems, few names carry the legacy and engineering depth of Schneider Electric (Barber Colman). Their lineup of damper actuators and accessories spans decades of proven field performance, and today these products continue to set the standard for fail-safe damper positioning in air handling units, VAV boxes, exhaust systems, and building automation installations.

A Deep Portfolio Built for Every Application

Barber Colman’s actuator catalog covers a remarkably broad range of control strategies. The MA series addresses two-position (on/off) electric control: the MA-418, for example, is a 120V spring-return actuator delivering 60 lb-in of torque, and the MA-405-500 pairs two-position control with an integrated SPDT auxiliary switch for position feedback and interlocking. Both are built around die-cast aluminum housings rated for ambient temperatures from -40°F to 136°F.

The MP series steps up to proportional and modulating control. These actuators support two-position, floating, and proportional control of dampers, valves, and program switches in heating, ventilating, and air conditioning applications. The MP-5400 series responds to 2–15 Vdc input signals from DDC controllers, with an adjustable start point for paralleling or sequencing multiple actuators across large air distribution networks. At the heavy-duty end, the MP-9430 delivers 550 lb-in of torque through an oil-submerged gear train that ensures quiet, continuously lubricated, and largely maintenance-free operation—a practical choice for oversized dampers where force requirements are demanding.

The MK series brings pneumatic expertise to the lineup. The MK-7101, for instance, is a pneumatic damper actuator offering 67.5 lb-in of torque, while the MK-4401 is engineered for two-position or floating control in ventilation, air handling, and energy management systems, with compatibility spanning both legacy Barber Colman controls and modern Schneider Electric automation platforms.

The M573/M574 piston damper actuator series serves pneumatic control systems, positioning automatic air dampers in response to an air pressure signal. These actuators accommodate proportional or two-position applications and are adaptable to multi-zone systems, fan coil units, unit ventilators, and mixing boxes. A built-in spring-return mechanism retracts the actuator shaft automatically on loss of air pressure, providing inherent fail-safe behavior without additional components.

Accessories That Complete the Installation

A damper actuator is only as good as its mechanical connection to the damper blade. Schneider Electric (Barber Colman) supports their actuator lines with a full range of hardware accessories. The AM-161 damper linkage kit, for example, bundles all necessary linkage components—including ball joints, push rods, crank arms, and coupling hardware—into a single part number, eliminating compatibility guesswork and streamlining installation time on the job site.

Why Barber Colman Remains a Trusted Choice

HVAC controls contractors and facility engineers continue to specify Barber Colman damper actuators for several key reasons: rugged die-cast aluminum construction, a consistent part-numbering system that clearly encodes voltage, torque, control action, and safety behavior, and a product architecture that bridges legacy pneumatic infrastructure and modern electronic DDC systems. Whether you are retrofitting an aging pneumatic system or specifying actuators for a new ground-up BAS installation, Schneider Electric (Barber Colman) offers a solution engineered to perform reliably in demanding mechanical environments.