Schneider Electric (Barber Colman) MA40-7043 Actuator

Designed for mission-critical reliability in HVAC systems, the Schneider Electric (Barber Colman) MA40-7043 Actuator is a direct-coupled damper actuator engineered for two-position control. This DuraDrive spring return actuator delivers a robust 35 lb-in torque, ensuring positive close-off for airtight damper and ball valve applications. Operating on 24 VAC/VDC power, the unit draws only 2.9 watts during operation and 0.8 watts during holding, providing an energy-efficient solution for fail-safe air handling or VAV terminal units. The universal clamp accommodates shafts up to 5/8" diameter or 1/2" square, significantly reducing installation time on the job site. With its NEMA 2/IP54 rated die-cast housing and overload protection throughout its 95-degree stroke, this SmartX direct-mount actuator is built to withstand rigorous commercial environments without the need for manual adjustment or frequent maintenance.

• Fail-Safe Operation: The mechanical spring return ensures the damper or valve returns to its default safety position during power loss.
• Universal Compatibility: Features a versatile clamp system for rapid mounting to 5/8" round or 1/2" square shafts.
• High Torque Precision: Delivers 35 lb-in torque suitable for air dampers and unit ventilators needing reliable 2-position control.
• Rugged Durability: Housed in a die-cast NEMA 2 enclosure to protect internal components from typical mechanical room conditions.
• Dual-Power Versatility: Compatible with both 24 VAC and 24 VDC control circuits for flexible integration into existing DDC systems.

Is the MA40-7043 compatible with Barber Colman linkages?
Yes, this unit can be used with AV-611 linkage kits to adapt the rotational force for 1/2" to 2" globe valve bodies, including older VB-7xxx and VB-9xxx series models.

Can I adjust the rotation angle of this 24V actuator?
This model provides a 95-degree rotation, but the stroke can be limited using mechanical stops to match specific damper or valve requirements.

Does this actuator require a specific mounting orientation?
No, it supports direct mounting in any orientation on either round or square shafts, though NEMA 2 protection is best maintained with the conduit connection pointing down.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.