Harmann - automation - transformer speed regulator STRA 4

Five-stage transformer speed controller for three-phase motor in rotary devices (pumps, fans), equipped with an input for connecting a motor thermal contact. It manually adjusts the speed of the motor by changing the supply voltage.

Technical data

• housing made of painted steel sheet
• switch on the housing
• resume work after a power outage
• the ability to remotely stop / resume fan operation
• two pairs of terminal in (OC, CC) for connecting external contacts in potential-free to stop and resume motor operation
• degree of protection IP54 (surface mounting)
• LEDs indicating power on and failure
• built-in thermal protection (TK)
• non-adjustable output (230 V / 2 A) for controlling an additional valve, indicator or damper actuator
• 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