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Is it possible to run the Altistrt 22 Soft starter on 55°C ambient temperature.

Yes, it is possible to run the Altistrt 22 on 55°C ambient temperatures.
For ambient temperatures between +40°C and +60°C, derate the nominal current of the Altistart by 2.2% for each additional degree.

Example:

ATS22C41S6 Soft Starter, nominal current 361A, at 500V, at 40 degree C.
So,For 55 degree C, derate the nominal current of the Altistart by 2.2% for each Additional degree.

=> At 55°C, derating of 33% must be apply
=>361 * [100 - (55-40)*2.2]/100.
=>361*(67/100)
=>241.87 A

So, ATS22C41S6 Soft starter would be good for motors up to 241 A full load current at 55°C.    
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