Fan speed control - TK monitoring - STRS4-40L40

Transformer fan speed controller for 400 V motor, equipped with thermal contacts. The (combined) maximum motor current is 4 A. The fan speed can be set via the in-built rotary switch on the front cover. The TK monitoring function disables the motor in case of overheating. The enclosure can be surface mounted and offers an IP54 protection against ingress of dirt, dust and moisture. The fan speed is regulated in 5 steps by reducing the motor voltage. The output voltage with perfect sinusoidal shape, guarantees quiet motor operation. The supply voltage is 400 V.