Honeywell MS8120F1002/U direct coupled 175 in-lb. spring return 24 VAC 95 degree angle

Product Description

The HONEYWELL MS8120F1002/U is a direct-coupled, fast-acting, two-position damper actuator designed for fire and smoke control systems. This 24 VAC actuator provides 175 lb-in (20 Nm) of torque with a spring return mechanism, accepting SPST control. It operates reliably in smoke control systems requiring UL555S ratings up to 350°F, featuring an aluminum housing and Teflon-jacketed cable electrical connections.

• Reversible mounting facilitates use in either clockwise (CW) or counterclockwise (CCW) spring rotation.
• Integral spring return ensures consistent return torque with 15-second timing.
• Designed for reliable operation in smoke control systems requiring UL555S ratings up to 350°F.

Product Highlights

Features a self-centering shaft adapter, quiet holding operation, and a robust aluminum housing for flush mounting.

Product Information

Standard Information

• Brand: HONEYWELL
• Manufacturer Part Number: MS8120F1002/U

Technical Specifications

• Housing Material: Aluminum
• Power Consumption (Driving): 45 VA
• Operating Temperature (F): -40 to 130
• Electrical Connection: Teflon-Jacketed Cable
• Application: Fire and Smoke
• Includes: Self-centering shaft adapter, 3mm crank
• Mounting: Direct Coupled
• Frequency: 50 Hz; 60 Hz
• Approvals: UL873, Plenum Rated
• Operating Humidity: 5 to 95% RH, non-condensing
• Input Voltage: 24 Vac +20%, -10%
• Shipping/Storage Temperature (F): -40 to +140
• Approvals (CE): 89/336/ECC, 73/23/EEC
• Approvals (cUL): C22.2 No. 24-93
• Regulatory Compliance Mark: N314
• IP Rating: IP54
• NEMA Rating: NEMA 2
• Internal Auxiliary Switches: 0
• Noise Rating (Driving): 70 dB(A) @ 1m
• Noise Rating (Holding): 20 dB(A) @ 1m (no audible noise)
• Rotational Stroke: 95 +/- 3 degrees
• Shaft Dimensions (in): 3/8 to 1.06 round or 3/8 to 11/16 square
• Actuator Type: Damper
• Control Signal: Two position; SPST
• Fail Safe Mode: Spring Return
• Torque Rating (lb-in): 175
• Spring Return Torque (lb-in): 175
• Additional Torque (lb-in): Maximum Stall: 425; Minimum Driving at 350 F: 175
• External Auxiliary Switches Available: No
• Driving Timing (60 Hz): 15 sec
• Spring Return Timing: 15 sec
• Shaft Adapter Type: Self-centering clamping
• Manual Operation: Manual crank
• Spring Return Direction: By orientation
• Electrical Connection Length (in): 40
• Category: Commercial Building Controls
• Product Series: S20 Fire and Smoke
• Family Series: Honeywell Dampers, S20 Fire and Smoke Series
• Feedback: None
• Comments: Two integral 3/8 in. flexible conduit connections