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Advanced fan speed control - TK monitoring

STRA1 fan speed controllers have a digital input, an alarm output and an unregulated output. They control single phase voltage controllable motors with a maximum current of 20 A. The fan speed is regulated in steps by varying the motor voltage. Their TK monitoring function protects the motor against overheating. The digital input can be used for remote start-stop commands. After a power failure, the motor will automatically restart. The output voltage with perfect sinusoidal shape, guarantees quiet motor operation. The enclosure allows surface mounting in indoor environments (IP54).
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