M4185B1009 Honeywell Modutrol IV Motor

THE HONEYWELL M4185B1009 MODUTROL IV Motor. Spring RETURN. 30VA, 120V 50/60HZ. 160 DEG ADJ STROKE. 30-60 SEC TIMING. 60 LB-IN TORQUE. WITH ONE AUX Switch. WITH Transformer. REPLACES M445A1000.; Two Position SPST Modutrol IV Motor, 120Vac, 60 Lb-In Torque, 30-60 Second Nominal Timing, 90-160 Degree Adjustable Stroke, 1 Internal Auxiliary Switch, Includes Internal Transformer, Spring Return, Foot Mounted, Dual Ended Square Shaft, Integral Junction Box Provides Nema 3 Weather Protection, -40-150 Ambient Temperature Range

Overview

The Honeywell M4185B1009 Modutrol IV Motor is a spring-return, foot-mounted actuator designed for reliable damper and valve control in commercial, industrial, and HVAC systems. With a robust 60 lb-in torque output, adjustable 90°–160° stroke, durable enclosure, and integrated auxiliary switch, this actuator delivers consistent performance in demanding environments. Its wide ambient temperature range and fail-safe spring-return operation make it a trusted option for safety-critical applications.

Key Features

• 60 lb-in torque for dependable damper and valve actuation

• Spring-return fail-safe operation on power loss

• 120 VAC, 50/60 Hz standard voltage

• Adjustable 90°–160° stroke to fit a wide range of control requirements

• Dual-ended shaft for flexible linkage configurations

• Internal auxiliary switch for interlock or signaling

• Rugged NEMA 3-rated housing when installed upright

• Wide temperature rating from –40°F to +150°F

• Foot-mounted design for easy installation and retrofit compatibility

Specifications

Applications

The Honeywell M4185B1009 is commonly used in:

• HVAC damper actuation

• Valve control in heating or cooling systems

• Industrial air handling units

• Combustion air dampers

• Systems requiring fail-safe spring return

• Retrofit replacement for older Modutrol motors

Benefits

• Provides safe shutdown positioning during power interruption

• Strong 60 lb-in torque ensures consistent actuator performance

• Adjustable stroke supports a wide range of damper/valve setups

• Built-in auxiliary switch simplifies system interlocks

• Rugged housing supports outdoor and industrial environments

• Long-lasting, dependable Honeywell Modutrol IV design