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Honeywell Rotary Actuator: Dampers/Valves, On/Off, Spring Return, 60 in-lb, 24V 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, 24V AC

The Honeywell M4185B1058/U is a fail-safe rotary actuator with spring return for dampers and valves, operating in on/off mode. It features a 160° stroke, 24V AC input voltage, and quick connect terminals. An…

SKU 3G-OTH-68335

Brand

Honeywell

Item

Rotary Actuator: Dampers/Valves, On/Off, Spring Return, 60 in-lb, 24V AC

Category

Fail-Safe Actuators with Spring Return

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Technical Specifications

Honeywell

Manufacturer Part Number

M4185B1058/U 

Type

On/Off, Spring Return, 60 in-lb, Quick Connect Terminals 

AC

24V

Input Voltage

24V AC 

Stroke Degree

160° 

Auxiliary Switch Included

Yes

Electrical Connection Type

Quick Connect Terminals 

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Honeywell Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Honeywell M4185B1058/U is a fail-safe rotary actuator with spring return for dampers and valves, operating in on/off mode. It features a 160° stroke, 24V AC input voltage, and quick connect terminals. An auxiliary switch is included.

Frequently Asked Questions

What is the Honeywell M4185B1058/U rotary actuator used for?

The Honeywell M4185B1058/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 ensures safe closure on power loss.

What are the specifications of the Honeywell M4185B1058/U?

The Honeywell M4185B1058/U operates on 24V AC input, provides 60 in-lb torque, and features a 160° stroke. It includes an auxiliary switch and quick connect terminals for easy wiring.

Where to buy the Honeywell M4185B1058/U worldwide?

3G Electric supplies the Honeywell M4185B1058/U rotary actuator worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time.

How to install the Honeywell M4185B1058/U spring return actuator?

Mount the actuator securely on the damper or valve shaft, ensuring proper alignment. Connect 24V AC power to the quick connect terminals per the wiring diagram. Test spring return function before commissioning.

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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