Multi Products 1161B Actuator

The Multi Products 1161B Actuator is a heavy-duty, 120V AC damper actuator engineered for precise airflow control in commercial and industrial HVAC systems. Designed with a counterclockwise (CCW) rotation, this motor is a critical component for driving dampers and louvers, ensuring consistent torque delivery for reliable blade positioning. Housed in a durable handybox enclosure, the 1161B is built with a zinc die-cast housing and a heavy-duty metal geartrain to withstand the rigors of continuous duty cycles in high-demand environments.

This stall-type actuator features a high-torque design (up to 37 in-lb stall torque) that maintains its position without the need for complex limit switches, simplifying the electrical footprint. The impedance-protected coil provides an extra layer of safety against electrical overload, while the 120-volt configuration allows for seamless integration with standard line voltage control circuits. Whether used in fresh air intake, zone control, or exhaust applications, the 1161B delivers the mechanical advantage required for tight damper shut-off and optimal system efficiency.

• Rugged Durability: Features a zinc die-cast housing and metal gears for long-term mechanical reliability in demanding HVACR applications.
• Simplified Installation: Integrated handybox design allows for direct mounting and secure electrical connections within the junction box.
• High Torque Performance: Designed as a stall-type motor to provide consistent force for positive damper closure and airflow management.
• UL Recognized Safety: Built with an impedance-protected coil to prevent overheating during stalled conditions.

What is the primary rotation for the 1161B model?
The 1161B is specifically configured for counterclockwise (CCW) rotation. Always verify the required rotation of your damper blades before installation to ensure proper airflow regulation.

Can this actuator be used in a spring-return setup?
Yes, its internal geartrain is designed with low back gear torque, making it suitable for spring return damper applications where a failsafe position is required upon power loss.

Is the 1161B compatible with standard 120V controls?
Absolutely. This unit operates on a standard 120V AC signal, making it a drop-in replacement for many common HVAC damper motor configurations found in older and modern control systems.

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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.