MS4104, MS4109, MS4604, MS4609, MS8104, MS8109 Honeywell Fast-Acting, Two-Position Actuators

Posted on: 09/04/2026

Quickly find the right Honeywell MS Series fire/smoke actuator model using our comparison tables. Complete specs for MS4104, MS4109, MS4604, MS4609, MS8104, and MS8109. Genuine products distributed officially by DLK Vietnam.

MS4104, MS4109, MS4604, MS4609, MS8104, MS8109 Honeywell Fast-Acting, Two-Position Actuators

The Honeywell Fast-Acting, Two-Position Actuators are specialized solutions for smoke control and fire safety systems. Featuring a mechanical Spring Return (Fail-safe) mechanism and high-speed response, these devices are critical for protecting life and property during emergencies.

These products are officially imported and distributed by DLK TRADING SERVICE COMPANY LIMITED.

General Features & Operating Principle

Honeywell MS Series actuators are engineered to operate dampers in ventilation ducts with absolute reliability. The defining feature is the Mechanical Fail-safe: When power is applied, the motor drives the damper open. Upon power loss or a fire alarm signal, a heavy-duty steel spring automatically returns the damper to its safe position in less than 20 seconds.

The IP54-rated enclosure and brushless DC motor ensure maintenance-free, long-term operation. For more details, explore our full range of Honeywell MS41xx, MS46xx, and MS81xx damper actuators.

Detailed Model Selection Tables

Find the specific model based on your voltage and feature requirements, as specified in the official Honeywell MS Series datasheet:

1. 24 VAC/VDC Actuators (Standard for BMS Systems)

Model	Torque	Auxiliary Switches (2 SPST)	Primary Application
Honeywell MS8104F1010	4 Nm	No	Small dampers under 0.7 $m^2$
Honeywell MS8104F1210	4 Nm	Yes	Small dampers with status feedback
Honeywell MS8109F1010	9 Nm	No	Large dampers up to 1.6 $m^2$
Honeywell MS8109F1210	9 Nm	Yes	Large dampers with status feedback

2. 230 VAC Actuators (Direct Mains Power)

Model	Torque	Auxiliary Switches (2 SPST)	Key Feature
Honeywell MS4604F1010	4 Nm	No	Streamlined 230V On/Off design
Honeywell MS4604F1210	4 Nm	Yes	Includes status feedback contacts
Honeywell MS4609F1010	9 Nm	No	Direct 230V high-torque operation
Honeywell MS4609F1210	9 Nm	Yes	Full-option 230V model

3. 120 VAC Actuators

Model	Torque	Auxiliary Switches (2 SPST)	Notes
Honeywell MS4104F1010	4 Nm	No	For 120V electrical infrastructure
Honeywell MS4104F1210	4 Nm	Yes	For 120V electrical infrastructure
Honeywell MS4109F1010	9 Nm	No	For 120V electrical infrastructure
Honeywell MS4109F1210	9 Nm	Yes	For 120V electrical infrastructure

Technical Comparison: 4Nm vs. 9Nm Series

Technical Specification	4Nm Series (Ends in 04)	9Nm Series (Ends in 09)
Torque Rating	4 Nm (35 lb-in)	9 Nm (80 lb-in)
Motor Drive Timing	< 15 seconds	< 45 seconds
Spring Return Timing	< 15 seconds	< 20 seconds
Maximum Stroke	95° ± 3°	95° ± 3°
Enclosure Rating	IP54	IP54
Sound Level (Driving)	50 dBA at 1m	45 dBA at 1m

Why Source Honeywell Actuators from DLK?

DLK is a trusted strategic partner for Honeywell automation. We guarantee the supply of the complete range, from MS4104F1010 to MS8109F1210, with premium service:

Guaranteed Quality: 100% genuine, brand-new products with full CO/CQ documentation.
Expert Consultation: Our engineers help you select the exact model based on damper size and fire safety codes.
Rapid Delivery: Local stock availability to meet tight project deadlines nationwide.

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