Honeywell Modutrol IV rotary actuators provide proportional modulation for dampers and valves, offering both spring-return and non-spring-return designs. With torque ratings from 25 to 300 lb‑in and adjustable stroke settings up to 160°, these reliable motors are widely used in HVAC, industrial burner systems, and control valve applications. They support current, voltage, 3-wire floating, or 135 Ω control input signals and include rugged, weather-resistant housings and quick-connect terminals.
Models are available with torque ratings from 25 lb‑in to 300 lb‑in and provide adjustable stroke settings between 90° and 160°, suitable for a broad range of damper and valve control needs.
Yes—spring-return versions automatically return to a fail-safe position during power loss, while non-spring-return models hold their last commanded position, allowing stable operation when powered.
Modutrol IV actuators support proportional input via current (4–20 mA), voltage (2–10 VDC), floating 3-wire, or fixed-resistance (135 Ω) lead signals, enabling seamless integration with various control systems.
Most models include one or two built-in auxiliary switches for position indication and offer dual-ended shafts with optional shaft adapters for retrofit flexibility. Quick-connect terminals simplify installation.
These actuators are ideal for HVAC dampers, industrial burner rate control, control valves, and any application requiring reliable proportional positioning with adjustable stroke, torque, and signal flexibility.
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