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Honeywell Rotary Actuator: Dampers/Valves, On/Off, Spring Return, 60 in-lb, 120V AC - Fail-Safe Actuators with Spring Return
HoneywellFail-Safe Actuators with Spring Return

Honeywell Rotary Actuator: Dampers/Valves, On/Off, Spring Return, 60 in-lb, 120V AC

The Honeywell M4185B1009/U is a fail-safe rotary actuator with spring return for dampers and valves, featuring a double-ended shaft and 160° clockwise stroke. It operates on 120V AC input with a 25W power rating…

SKU 3G-OTH-67511

Brand
Honeywell
Item
Rotary Actuator: Dampers/Valves, On/Off, Spring Return, 60 in-lb, 120V AC
Category
Fail-Safe Actuators with Spring Return
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Technical Specifications

Honeywell
Manufacturer Part Number
M4185B1009/U
Type
On/Off, Spring Return, 60 in-lb, Hardwired, NEMA 3
AC
120V
Shaft Type
Double-Ended
Power Rating
25W
Input Voltage
120V AC
Stroke Degree
160°
Shaft Rotation
CW
Auxiliary Switch Included
Yes
Electrical Connection Type
Hardwired
View Full Spec Sheet

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Honeywell Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Honeywell M4185B1009/U is a fail-safe rotary actuator with spring return for dampers and valves, featuring a double-ended shaft and 160° clockwise stroke. It operates on 120V AC input with a 25W power rating, includes an auxiliary switch, and uses a hardwired electrical connection.

Frequently Asked Questions

What is the Honeywell M4185B1009/U rotary actuator used for?

The Honeywell M4185B1009/U is a fail-safe rotary actuator with spring return, designed for on/off control of dampers and valves in HVAC and industrial systems. It provides 60 in-lb torque and a 160° clockwise stroke, ensuring reliable positioning in building automation and process control applications.

What are the specifications of the Honeywell M4185B1009/U?

The Honeywell M4185B1009/U operates on 120V AC input with a 25W power rating. It features a double-ended shaft, 160° clockwise stroke, and hardwired electrical connection. The actuator includes an auxiliary switch and is NEMA 3 rated for outdoor use, with spring return for fail-safe operation.

Where to buy the Honeywell M4185B1009/U worldwide?

3G Electric supplies the Honeywell M4185B1009/U rotary actuator to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this fail-safe actuator with spring return.

How to install the Honeywell M4185B1009/U rotary actuator?

Mount the Honeywell M4185B1009/U securely to the damper or valve shaft using the double-ended shaft coupling. Wire the 120V AC input per the hardwired connection diagram, ensuring proper grounding. Test the spring return function and auxiliary switch before commissioning. Follow Honeywell's installation manual for torque and stroke adjustments.

Used in

Common applications for Honeywell
Commercial kitchen and inflight-catering steam boilers — RM7890 / RM7895 flame relays with UV detection
Food-processing ramp-and-dwell ovens — DBC2000E / DBC2100E controllers
Hotel and hospital boiler plants — VR8205 combination gas controls
Petrochemical tank-farm heating — V4xxx gas-valve bodies with ML7420 actuators
Retrofit swap-outs from legacy Fireye / Satronic — Honeywell replacement kits

Honeywell Products

3G Electric supplies Honeywell fail-safe actuators with spring return. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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