Harmann - automation - transformer speed regulator STRS 4

Five-stage transformer speed controller for three-phase motor in rotary devices (pumps, fans). It is equipped with an input for connecting a motor thermal contact. It is used as a manual speed control in the motor in the fan in three-phase mode by changing the supply voltage.

Technical data

• housing made of painted steel sheet
• switch on the housing
• LED indicating power on
• built-in thermal protection (TK)
• non-adjustable output (230 V / 2 A) for controlling an additional indicator, valve or damper actuator
• no resumption of operation after power failure (manual reset required after motor failure signal)
• degree of protection IP54
• surface mounting
• working levels: L40 models - 0-130-180-230-300-400 V; models L50 - 0- (130) -170-220-260-300-400 V
• maximum working temperature 35 C