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Honeywell MS4120F1204 Fire and Smoke Spring Return Damper Actuator 120VAC
- Regular price
- $835.00
- Sale price
- $835.00
- Regular price
-
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Product Description P/N: MS4120F1204
Description
Honeywell MS4120F1204 is a direct-coupled fire and smoke damper actuator designed for two-position operation in HVAC life-safety applications. It provides 175 lb-in of torque, operates on 120 VAC power, and uses spring-return functionality to move compatible dampers to their fail-safe position when required.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC Controls |
| Part Number | MS4120F1204 |
| Subcategory | Fire and Smoke Damper Actuators |
| Product Type | Damper Actuator |
| Application | Fire and Smoke Dampers |
| Actuator Type | Two Position |
| Control Signal | 2 Position, SPST |
| Supply Voltage | 120 VAC |
| Frequency | 50/60 Hz |
| Torque | 175 lb-in |
| Fail-Safe Mode | Spring Return |
| Auxiliary Switches | 2 Internal |
| Mounting | Direct Coupled |
| Shaft Adapter | Self-Centering Clamping |
| Rotational Stroke | 95° ±3° |
| Spring Return Time | Maximum 20 sec |
| Nominal Driving Time | 45 sec at 60 Hz |
| Compatible Damper Shafts | 3/8–1.06 in Round; 3/8–11/16 in Square |
| Ambient Temperature Range | -40°F to 140°F |
| Dimensions | 9.72 × 3.94 × 2.95 in |
| Weight | 7.5 lb |
Information About MS4120F1204
The MS4120F1204 is a Honeywell fire and smoke damper actuator designed for direct mounting to compatible round or square damper shafts. Its two-position SPST control configuration combines powered actuation with spring-return operation for fire and smoke control applications. A self-centering clamping shaft adapter, manual crank, and two internal auxiliary switches support installation, adjustment, and status control requirements. The actuator provides a 95° rotational stroke, mechanically adjustable in 5° increments, and operates across a -40°F to 140°F ambient temperature range.
Key Features:
- Fire and Smoke Application: Designed specifically for operating compatible fire and smoke control dampers.
- 175 lb-in Torque: Provides rated torque for reliable positioning of compatible damper assemblies.
- Spring Return Operation: Moves the damper toward its fail-safe position when actuator power is removed.
- Two-Position Control: Uses an SPST control signal for straightforward open/close damper operation.
- Dual Auxiliary Switches: Includes two internal auxiliary switches for equipment status and control functions.
- Self-Centering Adapter: Accommodates compatible round and square damper shafts using a self-centering clamping mechanism.
- Adjustable Rotation: Provides a 95° ±3° rotational stroke with mechanical adjustment in 5° increments.
- Direct-Coupled Mounting: Attaches directly to the damper shaft for compact HVAC system installation.
The MS4120F1204 delivers the reliability and precision required for controlled operation of fire and smoke dampers in HVAC life-safety systems.
Description
Honeywell MS4120F1204 is a direct-coupled fire and smoke damper actuator designed for two-position operation in HVAC life-safety applications. It provides 175 lb-in of torque, operates on 120 VAC power, and uses spring-return functionality to move compatible dampers to their fail-safe position when required.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC Controls |
| Part Number | MS4120F1204 |
| Subcategory | Fire and Smoke Damper Actuators |
| Product Type | Damper Actuator |
| Application | Fire and Smoke Dampers |
| Actuator Type | Two Position |
| Control Signal | 2 Position, SPST |
| Supply Voltage | 120 VAC |
| Frequency | 50/60 Hz |
| Torque | 175 lb-in |
| Fail-Safe Mode | Spring Return |
| Auxiliary Switches | 2 Internal |
| Mounting | Direct Coupled |
| Shaft Adapter | Self-Centering Clamping |
| Rotational Stroke | 95° ±3° |
| Spring Return Time | Maximum 20 sec |
| Nominal Driving Time | 45 sec at 60 Hz |
| Compatible Damper Shafts | 3/8–1.06 in Round; 3/8–11/16 in Square |
| Ambient Temperature Range | -40°F to 140°F |
| Dimensions | 9.72 × 3.94 × 2.95 in |
| Weight | 7.5 lb |
Information About MS4120F1204
The MS4120F1204 is a Honeywell fire and smoke damper actuator designed for direct mounting to compatible round or square damper shafts. Its two-position SPST control configuration combines powered actuation with spring-return operation for fire and smoke control applications. A self-centering clamping shaft adapter, manual crank, and two internal auxiliary switches support installation, adjustment, and status control requirements. The actuator provides a 95° rotational stroke, mechanically adjustable in 5° increments, and operates across a -40°F to 140°F ambient temperature range.
Key Features:
- Fire and Smoke Application: Designed specifically for operating compatible fire and smoke control dampers.
- 175 lb-in Torque: Provides rated torque for reliable positioning of compatible damper assemblies.
- Spring Return Operation: Moves the damper toward its fail-safe position when actuator power is removed.
- Two-Position Control: Uses an SPST control signal for straightforward open/close damper operation.
- Dual Auxiliary Switches: Includes two internal auxiliary switches for equipment status and control functions.
- Self-Centering Adapter: Accommodates compatible round and square damper shafts using a self-centering clamping mechanism.
- Adjustable Rotation: Provides a 95° ±3° rotational stroke with mechanical adjustment in 5° increments.
- Direct-Coupled Mounting: Attaches directly to the damper shaft for compact HVAC system installation.
The MS4120F1204 delivers the reliability and precision required for controlled operation of fire and smoke dampers in HVAC life-safety systems.