Honeywell Direct Coupled 80 in-lb. Spring Return - MS4109F1210/U

The Honeywell Direct Coupled 80 in-lb. Spring Return is a robust control device designed for efficiency and reliability in smoke control systems. Operating at a voltage of 120 VAC and a power rating of 30 VA, it employs a simple two-position, SPST mechanism. The model is constructed masterfully, allowing operation to proceed smoothly in either clockwise or counterclockwise spring rotation. Fitted with a flush-mountable housing design, it integrates seamlessly with the damper.

One of its key features, the SPST position-indicating switches, are available in 7-degree and 85-degree stroke models. The device includes an integral spring return mechanism that guarantees consistent return torque levels. Its spring return timing is clocked at an efficient fifteen seconds.

This Honeywell model is brilliantly designed to not require any special cycling during long-term holding, thus reducing maintenance requirements. Another innovation is the near-silent operation, which eliminates audible noise during holding. The refined design, which is patent pending, removes the need for limit switches, consequently reducing power consumption.

Available models can accommodate voltages of 24, 120, and 230 VAC, providing versatility across different power requirements. With an impressive ninety-five-degree angle of rotation, the actuator holds rated torque even at reduced power levels.

In terms of technical specifications, this model features color-coded leads for a straightforward electrical connection. The durable aluminum housing ensures longevity, while an Auxiliary Switch 2 enhances the model's functionality. The operating conditions range from 0 F to 130 F (-18 C to 55 C), enabling reliable functionality under a wide spectrum of environmental conditions.