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Honeywell MS8120F1200 Spring Return Fire and Smoke Damper Actuator with Auxiliary Switches
- Regular price
- $707.00
- Sale price
- $707.00
- Regular price
-
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Product Description P/N: MS8120F1200
Description
The Honeywell MS8120F1200 is a fast-acting, two-position actuator for fire and smoke damper control. It provides 175 lb-in of torque from a 24 VAC supply and combines mechanical spring return with two internal auxiliary switches for position indication.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC |
| Part Number | MS8120F1200 |
| Subcategory | Fire and Smoke Damper Actuators |
| Series | MS8120F |
| Control Type | Two-position, SPST |
| Supply Voltage | 24 VAC +20%/−10%, Class 2 |
| Frequency | 50/60 Hz |
| Rated Torque | 175 lb-in (20 N·m) |
| Fail-Safe Mechanism | Spring return |
| Spring-Return Direction | CW or CCW, determined by mounting orientation |
| Typical Operating Time | Powered opening: 15 seconds; spring closing: 15 seconds |
| Internal Auxiliary Switches | 2 SPST; fixed nominal switching positions of 7° and 85° |
| Auxiliary Switch Rating | 250 VAC, 5 A resistive maximum |
| Mounting Type | Direct coupled with self-centering shaft adapter |
| Angular Stroke | 95° ±3°, mechanically limited |
| Ambient Operating Conditions | −40°F to 130°F; 5–95% RH, non-condensing |
| Enclosure Rating | NEMA 2 / IP54 when mounted on a horizontal shaft with actuator base below the shaft |
| Weight | 6.25 lb (2.8 kg) |
Information About MS8120F1200
The MS8120F1200 is part of Honeywell’s MS8120F direct-coupled actuator range. Its self-centering shaft adapter connects the motor directly to a compatible damper shaft. Reversible mounting determines whether spring-return movement is clockwise or counterclockwise. Teflon-insulated lead wires provide electrical connections, while the internal switches indicate positions near either end of travel.
Key Features:
- Two-Position Control: Accepts an SPST on/off signal for powered opening and spring-return closing.
- Rated Torque: Provides 175 lb-in (20 N·m) for compatible fire and smoke dampers.
- Fast Operation: Typical powered opening and spring closing times are 15 seconds each.
- Internal Auxiliary Switches: Includes two SPST switches for damper position indication.
- Reversible Spring Return: Supports clockwise or counterclockwise return according to mounting orientation.
- Self-Centering Adapter: Clamps directly onto a compatible damper shaft.
- Angular Travel: Provides a mechanically limited stroke of 95° ±3°.
- Insulated Wiring: Includes Teflon-insulated leads for power and switch connections.
The MS8120F1200 delivers the reliability and precision required for rapid damper operation and position indication in compatible fire and smoke control systems.
Description
The Honeywell MS8120F1200 is a fast-acting, two-position actuator for fire and smoke damper control. It provides 175 lb-in of torque from a 24 VAC supply and combines mechanical spring return with two internal auxiliary switches for position indication.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC |
| Part Number | MS8120F1200 |
| Subcategory | Fire and Smoke Damper Actuators |
| Series | MS8120F |
| Control Type | Two-position, SPST |
| Supply Voltage | 24 VAC +20%/−10%, Class 2 |
| Frequency | 50/60 Hz |
| Rated Torque | 175 lb-in (20 N·m) |
| Fail-Safe Mechanism | Spring return |
| Spring-Return Direction | CW or CCW, determined by mounting orientation |
| Typical Operating Time | Powered opening: 15 seconds; spring closing: 15 seconds |
| Internal Auxiliary Switches | 2 SPST; fixed nominal switching positions of 7° and 85° |
| Auxiliary Switch Rating | 250 VAC, 5 A resistive maximum |
| Mounting Type | Direct coupled with self-centering shaft adapter |
| Angular Stroke | 95° ±3°, mechanically limited |
| Ambient Operating Conditions | −40°F to 130°F; 5–95% RH, non-condensing |
| Enclosure Rating | NEMA 2 / IP54 when mounted on a horizontal shaft with actuator base below the shaft |
| Weight | 6.25 lb (2.8 kg) |
Information About MS8120F1200
The MS8120F1200 is part of Honeywell’s MS8120F direct-coupled actuator range. Its self-centering shaft adapter connects the motor directly to a compatible damper shaft. Reversible mounting determines whether spring-return movement is clockwise or counterclockwise. Teflon-insulated lead wires provide electrical connections, while the internal switches indicate positions near either end of travel.
Key Features:
- Two-Position Control: Accepts an SPST on/off signal for powered opening and spring-return closing.
- Rated Torque: Provides 175 lb-in (20 N·m) for compatible fire and smoke dampers.
- Fast Operation: Typical powered opening and spring closing times are 15 seconds each.
- Internal Auxiliary Switches: Includes two SPST switches for damper position indication.
- Reversible Spring Return: Supports clockwise or counterclockwise return according to mounting orientation.
- Self-Centering Adapter: Clamps directly onto a compatible damper shaft.
- Angular Travel: Provides a mechanically limited stroke of 95° ±3°.
- Insulated Wiring: Includes Teflon-insulated leads for power and switch connections.
The MS8120F1200 delivers the reliability and precision required for rapid damper operation and position indication in compatible fire and smoke control systems.
