Belimo TF120-S Spring Return Fail-Safe On/Off Control

PART NUMBER CHANGED BY THE MANUFACTURER - NEW PART NUMBER #TFB120-S

Application:

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

The actuator is mounted directly to a damper 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.

Technical Data:

Power Supply:

• Nominal: 100 to 240 VAC, 50/60 Hz
• Tolerance: 85 to 265 VAC, 50/60 Hz

Power Consumption:

• Running: 2.5 W
• Holding: 1.3 W

Transformer Sizing:

• 5 VA (class 2 power source)

Electrical connection:

• 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)

Running time:

• Motor: < 75 sec (0 to 18 in-lb)
• Spring: < 25 sec @-4F to 122F - < 60 sec @ -22F

Humidity:

• 5 to 95% RH non-condensing

Ambient temperature:

• -22F to 122F

Storage temperature:

• -40F to 176F

Housing:

• NEMA type 2 / IP42, UL enclosure type 2

Housing Material:

• UL94-5VA

Weight:

• 1.4lbs