Description
The Honeywell M4185B1058 is a Modutrol IV control actuator designed to provide reliable two-position damper operation in HVAC and industrial control systems. It delivers 60 lb-in of torque with spring return fail-safe functionality and supports multiple line voltage supply options.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Honeywell |
| Category |
Actuators & Dampers |
| Part Number |
M4185B1058 |
| Subcategory |
Damper Actuators |
| Product Series |
M41 |
| Actuator Type |
Modutrol IV Control Actuator |
| Control Signal |
Two Position (On/Off) |
| Nominal Supply Voltage |
24 VAC, 120 VAC, 240 VAC |
| Power Consumption |
20 VA |
| Torque Rating |
60 lb-in |
| Stroke Angle |
90° Factory Set, Adjustable up to 160° |
| Nominal Timing |
30–60 Seconds |
| Fail-Safe Mode |
Spring Return |
| Shaft Size |
3/8 in Square |
| Shaft Rotation |
Clockwise |
| Mounting Style |
Foot Mounted, Dual Ended Shaft |
| Auxiliary Switches |
1 Internal |
| Enclosure Rating |
NEMA 3 |
| Operating Temperature |
-40 to 150 °F |
| Approvals |
CE, UL |
| Weight |
9.5 lbs |
Information About M4185B1058
The M4185B1058 is part of Honeywell’s M41 series Modutrol IV actuators developed for dependable damper and valve control. It features a robust motor and gear train designed to deliver consistent torque output across a range of supply voltages without requiring external transformers. The actuator incorporates a spring return mechanism to ensure a defined fail-safe position during power loss. Its durable construction and adjustable stroke configuration support flexible integration into a wide range of control assemblies.
Key Features
- Two Position Control Operation: Supports on/off damper control for straightforward and reliable system actuation.
- Spring Return Fail-Safe: Automatically drives the actuator to a safe position upon loss of power.
- Multi-Voltage Compatibility: Operates on 24 VAC, 120 VAC, or 240 VAC for versatile system integration.
- 60 lb-in Torque Output: Provides sufficient force for medium-duty damper and valve applications.
- Adjustable Stroke Range: Factory set to 90° with field adjustment up to 160° for application flexibility.
- Integrated Auxiliary Switch: Includes one internal auxiliary switch for status indication or control logic.
- NEMA 3 Enclosure: Offers protection suitable for demanding mechanical room environments.
The M4185B1058 delivers the reliability and precision required for controlled damper actuation in HVAC and industrial control systems.
