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131

TFC120-S US

On/Off, Spring Return, 100-240 VAC

Torque min. 18 in-lb, for control of air dampers

Application

For On/Off fast running, fail-safe control of dampers in HVAC systems. Actuator sizing 
should be done in accordance with the damper manufacturer’s specifications. Control 
is On/Off from an auxiliary contact, or a manual switch.

The actuator is mounted directly to a damper shaft from 1/4” up to 1/2” in diameter
by means of its universal clamp, 1/2” shaft centered at delivery.  A crank arm and 
several mounting brackets are available for applications where the actuator cannot be
direct coupled to the damper shaft.

Operation

The TF series actuators provide true spring return operation for reliable fail-safe 
application and positive close off on air tight dampers. The spring return system 
provides consistent torque to the damper with, and without, power applied to the 
actuator.

The TF series provides 95° of rotation and is provided with a graduated position 
indicator showing 0° to 90°.

The actuator may be stalled anywhere in its normal rotation without the need of 
mechanical end switches.  Power consumption is reduced in holding mode.  The
actuator is double insulated so an electrical ground connection is not necessary.

The TFC120-S US versions are provided with one built-in auxiliary switch. This SPDT
switch is provided for safety interfacing or signaling, for example, for fan start-up. The
switching function is adjustable between 0° and 95°.

SAFETY NOTE

Screw a conduit fi tting into the actuator’s bushing.  Jacket the actuator’s input and
output wiring with suitable fl exible conduit.  Properly terminate the conduit in a 
suitable junction box.

Dimensions

 (Inches [mm])

0.43"  [11]

0.77"  [19.5]

4.5" 

[114]

0.2" 

[5.2]

6.28" 

[159.5]

3.0" 

[76.2]

3.30" 

[83.72]

2.40" 

[61]

0.68"  [16.7]

Standard:

       1/4" to 1/2" 

       1/4" to 5/16"

     

D

096

Technical Data

TFC120-S US 

Power supply

nominal 100 to 240 VAC, 50/60 Hz

tolerance 85 to 265 VAC, 50/60 Hz

Power consumption

running 3 W

holding 1.5 W

Transformer sizing

6 VA (class 2 power source)

Electrical connection

two 3 ft, 18 GA appliance cable
1/2” conduit connector

Overload protection

electronic throughout 0 to 95° rotation

Electrical protection

actuators are double insulated

Angle of rotation

max 95°, adjust. with mechanical stop

Torque

min. 18 in-lb [2 Nm]

Direction of rotation

reversible with cw/ccw mounting

Position indication

visual indicator, 0° to 95°
(0° spring return position)

Auxiliary switch

1 x SPDT 3A (0.5A) @ 250 VAC, UL approved
adjustable 0° to 95°

Running time

motor < 30 sec (0 to 18 in-lb)

spring  < 25 sec @-4°F to 122°F [-20°C to 50°C]

< 60 sec @-22°F [-30°C]

Humidity

5 to 95% RH non-condensing

Ambient temperature

-22°F to 122°F [-30°C to 50°C]

Storage temperature

-40°F to 176°F [-40°C to 80°C]

Housing 

NEMA type 2 / IP42, UL enclosure type 2

Housing material

UL94-5VA

Agency listings†

cULus acc. to UL60730-1A/-2-14,
CAN/CSA E60730-1:02, CE acc. to 2004/108/EC,
and 2006/95/EC

Noise level (max)

running < 56 db (A)

spring return 63 dB (A)

Servicing

maintenance free

Quality standard

ISO 9001

Weight

1.5 lbs (0.7 kg)

†  Rated Impulse Voltage 4kV, Type of action 1.AA.B, Control Pollution Degree 3.

 M40024 - 05/10 - Subject to change.

 © Belimo 

Aircontrols (USA),

 Inc.

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