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Low-voltage equipment

Variable Frequency Drive Triol AT24 line UB

Low-voltage Variable Frequency Drive Triol AT24 line UB is a simple, reliable and cost-effective solution for controlling ventilation and air-conditioning systems from 0.75 kW to 55 kW for 380/480 V. Successfully operating at −10…+40 °C, Triol AT24 VFD has a built-in seven-segment control panel. Moreover, there’re two satisfying IP21 enclosures in a plastic case for drives up to 7.5 kW or a metal case for drives up to 11-55 kW.

Power supply, V3×380/ 3×480 (–15%…+10%) 
Power frequency, Hz50/60 (–5%…+5%) 
Power range, kW0.75-55 
Braking switchBuild-in (0.75-15 kW)  Build-in (22-55 kW optional) 
Cycle adjustmentPID 
Remote optionControl panel with display on seven-segment indicators 
Output frequency, Hz0-400 
PWM frequency, kHz2-10

Default value: 5.5 kW to 55 kW – 5 kHz.


Casing materialPlastic (075K-7K5)

Metal (11K-55K)

Operating temperature, °C (°F)−10…+40 °C

(14…104 °F)

Percentage of moisture, %95%
Cooling typeAir, forced