STVS4

3*400 V transformer fan speed controller with analogue control

The STVS4 transformer speed controllers are based on the principle of voltage control with auto-transformers. They are applicable to voltage-controllable motors (400 V, 50/60 Hz) to control the rotational speed (of fans, pumps, etc.). By combining the transformer outs, contactors and a relay board, it is possible to select these predetermined speeds by a 0-10 Vdc signal (e.g. Combine with MTP10, MTV). They are fitted out with (TK) contacts for thermal motor protection.

• 400 Vac - 50/60 Hz - from 1,5 up to 11 A
• Control signal input: 0 - 10 Vdc
• Supply: 12 Vdc output
• Power / control: galvanic separated
• Motor protection, by connecting thermal (overheating) contacts of the motor
• Indicator lights, Run/Fault indication
• Current fuse (PCB)
• 230 V unregulated output

datasheet mounting instructions declaration of conformity