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Honeywell MS4120F1204/U Fire & Smoke Rated Actuator - Fire & Smoke Rated Actuators
HoneywellFire & Smoke Rated Actuators

Honeywell MS4120F1204/U Fire & Smoke Rated Actuator

The HONEYWELL MS4120F1204/U is a fire & smoke rated actuator designed for ball valves, butterfly valves, cage valves, dampers, and globe valves. It operates as an on/off, spring return unit with a 95° stroke and…

SKU 3G-OTH-67054

Also listed as: MS4120F1204U · MS4120F1204 U · MS4120F1204-U

Brand
Honeywell
Item
MS4120F1204/U Fire & Smoke Rated Actuator
Category
Fire & Smoke Rated Actuators
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Honeywell
Manufacturer Part Number
MS4120F1204/U
Type
On/Off, Spring Return
Power Rating
35W
Input Voltage
120V AC
Stroke Degree
95°
Shaft Rotation
CW/CCW
Auxiliary Switch Included
Yes
Electrical Connection Type
Hardwired

Technical Documents

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

Product Description

The HONEYWELL MS4120F1204/U is a fire & smoke rated actuator designed for ball valves, butterfly valves, cage valves, dampers, and globe valves. It operates as an on/off, spring return unit with a 95° stroke and CW/CCW shaft rotation, powered by 120V AC at 35W. This hardwired actuator includes an auxiliary switch.

Frequently Asked Questions

What is the Honeywell MS4120F1204/U actuator used for?

The Honeywell MS4120F1204/U is a fire & smoke rated actuator used for on/off, spring return control of ball valves, butterfly valves, cage valves, dampers, and globe valves in HVAC and industrial safety systems.

What are the specifications of the Honeywell MS4120F1204/U?

The Honeywell MS4120F1204/U operates at 120V AC, 35W, with a 95° stroke and CW/CCW shaft rotation. It includes an auxiliary switch and is hardwired. It is designed for fire & smoke rated applications on valves and dampers.

Where to buy the Honeywell MS4120F1204/U worldwide?

You can source the Honeywell MS4120F1204/U through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations for this fire & smoke rated actuator.

How to install the Honeywell MS4120F1204/U actuator?

Install the Honeywell MS4120F1204/U by hardwiring the 120V AC supply, ensuring the shaft rotation (CW/CCW) matches the valve or damper stroke. Mount securely, connect the auxiliary switch as needed, and test spring return function per manufacturer guidelines.

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 fire & smoke rated actuators. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Actuator: Dampers/Valves, Floating Point/On/Off, Non-Spring Return, 35 in-lb, 24V AC, NEMA 1 (MPN ML6161B2024/U)
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Actuator: Dampers/Valves, Floating Point/On/Off, Non-Spring Return, 35 in-lb, 24V AC, NEMA 1 (MPN ML6161B2024/U)
On/off fail-safe spring return actuator with self-centering shaft for 95° stroke rotation (CW/CCW). Operates on 100 to 250V AC input and includes an auxiliary switch with screw terminals. IP54 rated and plenum rated for use in air-handling spaces. Suitable for on/off control of dampers and valves such as ball, butterfly, cage, and globe valves
Honeywell
On/off fail-safe spring return actuator with self-centering shaft for 95° stroke rotation (CW/CCW). Operates on 100 to 250V AC input and includes an auxiliary switch with screw terminals. IP54 rated and plenum rated for use in air-handling spaces. Suitable for on/off control of dampers and valves such as ball, butterfly, cage, and globe valves
Actuator: Ball Valves/Butterfly Valves/Cage Valves/Dampers/Globe Valves, Floating Point/Proportional (MPN MS7520A2007/U)
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Actuator: Ball Valves/Butterfly Valves/Cage Valves/Dampers/Globe Valves, Floating Point/Proportional (MPN MS7520A2007/U)
Actuator: Ball Valves/Butterfly Valves/Cage Valves/Dampers/Globe Valves, Floating Point/Proportional (MPN MS7510A2008/U)
Honeywell
Actuator: Ball Valves/Butterfly Valves/Cage Valves/Dampers/Globe Valves, Floating Point/Proportional (MPN MS7510A2008/U)

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Actuator: Fire and Smoke Dampers, On/Off, Spring Return, 80 in-lb, 24V AC, Hardwired, NEMA 1 / IP54 (MPN MS8109F1010/U)
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Coupled Actuator: Dampers, On/Off, Spring Return, 30 in-lb, 120V AC, Hardwired, IP40 (MPN MS4104F1210/U)
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Coupled Actuator: Dampers, On/Off, Spring Return, 30 in-lb, 120V AC, Hardwired, IP40 (MPN MS4104F1210/U)