Soft Starters

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Category: News
Published on Tuesday, 21 November 2023 12:00
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Soft StartersITC is offering the new Ex9QR5 line of Soft Starters (Solid State Reduced Voltage Starters or SSRVs) from NOARK.

Soft starters offer ramping up the voltage applied to the windings of a three-phase motor during the start-up phase, in order to prevent the well-known detrimental electrical and mechanical effects which occur in case of a direct start (high in-rush current and starting torque, stress on mechanical components, etc...).

The Ex9QR5 devices offer several programmable modes of operation, plus a number of protection functions, including phase loss or unbalance, overload, over- and under-voltage, locked rotor, starter timing, and additional features.

 

 

 

 

Ex9QR5 soft starts are offered for rated current from 15A to 1000A, main voltage 200 to 690VAC. Depending of the rated current, there are five different sizes of housings.

Installation of a soft starter should also include a main circuit breaker (typically rated 120% of the soft starter current) and a bypass contactor, to connect the motor directly to the line after the starting sequence is finished. ITC can provide all these additional devices.

 

Additional features: wide frequency input (35-60 Hz), braking function, reverse rotation, built-in RS-485 communication port and more.

The complete Ex9QR5 series is cULus approved.

 

Download the Ex9QR5 soft starters catalog.

Contact ITC to request information about about circuit breakers and contactors.