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Our Products

Balancing/Regulating Dampers
Precision/Flow™ Regulators
Remote Control Bowden Cable
Remote Control Power/Balance™
Remote Control Twisting Cable
Control & Backdraft Dampers
Backdraft Dampers
IRIS Damper
Rectangular Dampers
Round Dampers
Small Motorized Rectangular Dampers
Small Motorized Round Dampers
Doors
Access Doors
Plenum Access Doors
Drop Plenum Diffusers
Industrial Dampers
Blast Dampers
Industrial Backdraft Dampers
Rectangular Industrial Dampers
Round Industrial Dampers
Life Safety Dampers
Ceiling Radiation (Fire) Dampers
Combination Fire/Smoke Dampers
Dynamic Fire Dampers
Smoke Dampers
Static Fire Dampers
Louvers
Acoustical Louvers
Adjustable Louvers
Blast Louvers
Brick & Flood Vents
Combination Louver/Damper
Dade County Hurricane Louvers
Equipment Screens
FEMA 361 Louver/Grille
Fixed Louvers
PTAC Grilles
Wind-Driven Rain / Sand Louvers
Misc. Products
Control Damper Act.
Duct Smoke Detectors
Life Safety Actuators
Plenums
Security Bars & Grilles
VAV Terminals
Penthouses
Roof Curbs and Rails
Conventional Curbs
Conventional Rails
Curb Adapters
Metal Building Curbs
Metal Building Rails
Sunshades
Vent Hoods
Vent Hoods
Wall Intake Hoods

Life Safety Actuators

Fire and smoke damper actuators are designed for operation in smoke and combination fire and smoke dampers in ventilation and air-conditioning systems. For maximum safety in all situations, the fire and smoke actuators meets all codes for commercial buildings in the U.S., passes UL 555 & UL 555S at 250ºF or 350ºF.

Honeywell MS4120 Series

Two Position Spring Return Fire Smoke Actuators 175 in-lb
Two Position Spring Return Fire Smoke Actuators 175 in-lb

Application

The MS4120F, MS8120F Fast-Acting, Two-Position Actuators are spring return direct coupled actuators (DCA) for on/off damper control designed to operate reliably in smoke control systems requiring Underwriter’s Laboratories Inc. UL555S ratings up to 350°F, if applicable. The actuator accepts an on/off signal from a single-pole, single-throw (spst) controller. Reversible mounting allows actuator to be used for either clockwise (cw) or counterclockwise (ccw) spring rotation.

Product Information
More Life Safety Actuators
Two Postion Spring Return Fire Smoke Actuator 18 in-lb
Belimo FSTF120
Two Postion Spring Return Fire Smoke Actuator 18 in-lb
Two Postion Spring Return w/Switches Fire Smoke Actuator 18 in-lb
Belimo FSTF120-S
Two Postion Spring Return w/Switches Fire Smoke Actuator 18 in-lb
Two Position Spring Return Fire Smoke Actuator 18 in-lb
Belimo FSTF230
Two Position Spring Return Fire Smoke Actuator 18 in-lb
Two Position Spring Return w/Switches Fire Smoke Actuator 18 in-lb
Belimo FSTF230-S
Two Position Spring Return w/Switches Fire Smoke Actuator 18 in-lb
Two Position Spring Return Fire Smoke Actuator 18 in-lb
Belimo FSTF24
Two Position Spring Return Fire Smoke Actuator 18 in-lb
Two Position Spring Return w/Switches Fire Smoke Actuator 18 in-lb
Belimo FSTF24-S
Two Position Spring Return w/Switches Fire Smoke Actuator 18 in-lb
Two Postion Spring Return Fire Smoke Actuator 30 in-lb
Belimo FSLF120
Two Postion Spring Return Fire Smoke Actuator 30 in-lb
Two Postion Spring Return w/Switches Fire Smoke Actuator 30 in-lb
Belimo FSLF120-S
Two Postion Spring Return w/Switches Fire Smoke Actuator 30 in-lb
Two Postion Spring Return Fire Smoke Actuator 30 in-lb
Belimo FSLF230
Two Postion Spring Return Fire Smoke Actuator 30 in-lb
Two Postion Spring Return w/Switches Fire Smoke Actuator 30 in-lb
Belimo FSLF230-S
Two Postion Spring Return w/Switches Fire Smoke Actuator 30 in-lb
Two Postion Spring Return Fire Smoke Actuator 30 in-lb
Belimo FSLF24
Two Postion Spring Return Fire Smoke Actuator 30 in-lb
Two Postion Spring Return w/Switches Fire Smoke Actuator 30 in-lb
Belimo FSLF24-S
Two Postion Spring Return w/Switches Fire Smoke Actuator 30 in-lb
Two Postion Spring Return Fire Smoke Actuator 70 in-lb
Belimo FSNF120
Two Postion Spring Return Fire Smoke Actuator 70 in-lb
Two Postion Spring Return w/Switches Fire Smoke Actuator 70 in-lb
Belimo FSNF120-S
Two Postion Spring Return w/Switches Fire Smoke Actuator 70 in-lb
Two Postion Spring Return Fire Smoke Actuator 70 in-lb
Belimo FSNF24
Two Postion Spring Return Fire Smoke Actuator 70 in-lb
Two Postion Spring Return w/Switches Fire Smoke Actuator 70 in-lb
Belimo FSNF24-S
Two Postion Spring Return w/Switches Fire Smoke Actuator 70 in-lb
Two Postion Spring Return Fire Smoke Actuator 70 in-lb
Belimo FSNF230
Two Postion Spring Return Fire Smoke Actuator 70 in-lb
Two Postion Spring Return w/Switches Fire Smoke Actuator 70 in-lb
Belimo FSNF230-S
Two Postion Spring Return w/Switches Fire Smoke Actuator 70 in-lb
Two Postion Spring Return Fire Smoke Actuator 180 in-lb
Belimo FSAF120A
Two Postion Spring Return Fire Smoke Actuator 180 in-lb
Two Postion Spring Return w/Switches Fire Smoke Actuator 180 in-lb
Belimo FSAF120A-S
Two Postion Spring Return w/Switches Fire Smoke Actuator 180 in-lb
Two Postion Spring Return Fire Smoke Actuator 180 in-lb
Belimo FSAF230A
Two Postion Spring Return Fire Smoke Actuator 180 in-lb
Two Postion Spring Return Fire Smoke Actuator 180 in-lb
Belimo FSAF24A
Two Postion Spring Return Fire Smoke Actuator 180 in-lb
Two Postion Spring Return w/Switches Fire Smoke Actuator 180 in-lb
Belimo FSAF24A-S
Two Postion Spring Return w/Switches Fire Smoke Actuator 180 in-lb
Modulating Fire Smoke Actuator 180 in-lb
Belimo FSAFB24-SR
Modulating Fire Smoke Actuator 180 in-lb
Modulating Fire Smoke Actuator 180 in-lb w/Switches
Belimo FSAFB24-SR-S
Modulating Fire Smoke Actuator 180 in-lb w/Switches
Two Postion Spring Return w/Switches Fire Smoke Actuator 180 in-lb
Belimo FSAF230A-S
Two Postion Spring Return w/Switches Fire Smoke Actuator 180 in-lb
Two Position Spring Return Fire Smoke Actuators 30 lb-in or 80 lb-in
Honeywell MS4104_MS4109 Series
Two Position Spring Return Fire Smoke Actuators 30 lb-in or 80 lb-in
Pneumatic Fire Smoke Actuator
Siemens 331-2961
Pneumatic Fire Smoke Actuator
Pneumatic Fire Smoke Actuator
Siemens 331-4826
Pneumatic Fire Smoke Actuator