M9484F1057 Honeywell 150 lb-in Reversing Modulating Actuator
Manufacturer: Honeywell
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Part Number: M9484F1057
Condition：New with Original Package
Product Type: Proportional Control
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Honeywell M9484F1057 provides high-torque, reversing proportional control for dampers, valves, and auxiliary equipment in industrial burner and HVAC systems. This Modutrol IV series actuator translates a 135-ohm input signal into precise mechanical positioning. Its non-spring return architecture ensures the device maintains its current position upon power loss, preventing sudden system fluctuations. We supply this unit as 100% Brand New and Original, featuring ruggedized internal gearing for mission-critical reliability in high-demand combustion and process applications.
Technical Specifications
| Parameter | Specification Details |
| Model Number | M9484F1057 |
| Control Signal | 135-ohm Proportional (0–135 Ω) |
| Power Supply | 24 VAC, 50/60 Hz |
| Torque Output | 150 lb-in (17 Nm) |
| Stroke Range | Adjustable from 90° to 160° |
| Timing | 30 to 60 seconds (Nominal) |
| Ambient Temp | –40°C to +66°C (–40°F to +150°F) |
| Enclosure | NEMA 2 (Drip-tight) |
| Weight | 4.5 kg (10 lbs) |
| Certifications | UL, FM, CSA, CE, EAC |
Engineering Advantages
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Customizable Stroke Dynamics: Dual internal limit switches allow engineers to adjust the mechanical stroke between 90° and 160°. This flexibility simplifies installation by matching the actuator travel precisely to the specific damper or valve linkage requirements.
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High-Torque Performance: The unit delivers a constant 150 lb-in (17 Nm) torque output. This power handles heavy industrial dampers and high-pressure butterfly valves without the stalling issues common in lighter residential-grade actuators.
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Fail-in-Place Security: The non-spring return motor provides "Stay-Put" functionality. In the event of a power failure or signal loss, the actuator locks in its last commanded position, which is critical for maintaining stable process temperatures in burner applications.
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Industrial Weatherproofing: The NEMA 2 rated aluminum housing and wide operating temperature range (down to –40°C) permit deployment in unconditioned mechanical rooms and outdoor enclosures. Rugged screw terminals ensure high-vibration resistance for field wiring.
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Ease of Integration: Standard foot-mounting and a double-ended shaft allow for easy replacement of legacy Series 90 actuators. It integrates directly with Honeywell Series 90 controllers and electronic Modutrol interfaces.
FAQs
Can the M9484F1057 replace an older Honeywell M944 or M945 model?
Yes. The M9484F1057 belongs to the Modutrol IV family, which serves as a direct functional replacement for many legacy Series 90 (135-ohm) actuators. Ensure your current application requires the 150 lb-in torque rating and 24 VAC power.
How do I adjust the stroke angle on this unit?
The actuator contains adjustable cam-operated limit switches under the top cover. By rotating these cams, you can restrict or expand the travel anywhere between 90 and 160 degrees to prevent mechanical binding of your linkage.
Does this actuator require a transformer?
Yes, the M9484F1057 operates on 24 VAC. You must provide a dedicated Class 2 transformer if your control circuit operates on 120V or 230V mains to prevent damage to the internal motor and control board.
Is this unit suitable for gas valve linkage?
Absolutely. With FM (Factory Mutual) approval, the M9484F1057 meets the safety and reliability standards required for fuel-air ratio control and industrial burner gas valve modulation.