STL

electronic fan speed controller, 230 Vac

The electronic speed controllers of the STL series control the speed of single phase (230 Vac - 50 Hz) voltage controllable motors by varying the supplied voltage through phase angle control.

There is a potentiometer and a separate ON/OFF switch with built in telltale, the minimum speed allowed can be adjusted internally with a little trimmer (factory preset = 100 V). The terminal board has a supplementary connection to bypass the ON/OFF switch (automatic start) or to branch off 230 V not controlled (three wire motor connection, valve, lamp, damper, etc ...).

There are two working modes: normal or kickstart.

• Supply: 230 Vac 50 Hz
• Infinitely variable control
• Minimum speed adjustable by internal trimmer
• Illuminated On/Off switch
• Max ambient temperature: 35 °C
• IP 54

datasheet mounting instructions declaration of conformity