Honeywell Modutrol IV Series 72 rotary actuators are 24 VAC modulating motors designed for precise proportional control of dampers and valves. Available in both spring-return and non-spring-return options, these actuators include adjustable stroke, dual-end shafts, quick-connect terminals, auxiliary switches, and durable, weather-resistant die-cast housings—ideal for HVAC, burner control, and industrial automation tasks.
Honeywell Modutrol IV Series 72 modulating actuators accept standard electronic control signals (4–20 mA or 2–10 VDC) for precise damper and valve positioning. Because selecting the correct replacement requires matching torque ratings (35 to 300 lb‑in), spring-return fail-safe action (spring-return vs. non-spring return), field stroke angles (90° to 160°), and zero/span calibration requirements, verifying technical specifications is essential. Contact our technical sourcing team today to locate your exact replacement model or cross-reference legacy actuators.
Series 72 actuators feature NEMA 3 die-cast aluminum enclosures, oil-immersed gear trains, and solid-state electronic control boards accepting 4–20 mA or 2–10 VDC input signals. Use this matrix to compare fail-safe capabilities, torque classes, and common model numbers.
| Actuator Class | Control Signal & Drive Logic | Common Series |
|---|---|---|
| Series 72 Non-Spring Return (NSR) | 24VAC or 120VAC 4–20 mA / 2–10 VDC modulating actuators providing 35 to 150 lb‑in torque, holding position upon power interruption. | M7284A1004, M7284Q1009 |
| Series 72 Spring Return (SR) | Fail-safe spring-return modulating motors (24VAC/120VAC) providing 35 to 60 lb‑in torque for freeze-protection and safety shut-off dampers. | M7285A1003, M7285Q1008 |
| High-Torque Series 72 | Heavy-duty 150 lb‑in and 300 lb‑in modulating actuators engineered for large multi-blade air handling dampers and industrial valve trains. | M7294A1010, M7294Q1007 |
Modulating Air Handling Damper & Valve Package
Fail-Safe Modulating Burner & Steam Valve Assembly
Control Jumper & Spring Orientation Alert: Modutrol IV Series 72 actuators feature internal dip switches/jumpers for selecting between 4–20 mA and 2–10 VDC input signals. Additionally, confirm whether your application requires Spring Return (fail-safe upon power loss) or Non-Spring Return operation prior to ordering to prevent improper safety sequence behavior.
Honeywell Series 72 Modutrol IV motors provide direct compatibility with modern Direct Digital Control (DDC) building automation systems. Supporting both current (4–20 mA) and voltage (2–10 VDC) inputs without requiring external interface modules, they deliver smooth, step-free modulation across 90° to 160° stroke angles.
Featuring built-in zero and span adjustments, Series 72 actuators can be calibrated for split-range sequencing—allowing a single control signal to operate two separate dampers or valves in tandem. Sealed inside weatherproof NEMA 3 aluminum housings with oil-immersed gear trains, these motors are built for decades of reliable service in harsh mechanical rooms.
Unsure of your control signal jumper, torque rating, or fail-safe requirement?
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