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How to decode the date code in NEMA Freedom/A200 series contactors

If the date code is TXXXX, last 2 digits indicates the year of manufacture (For example if it is 17, year of manufacture would be 2017) and 2 digits after T indicates the week of manufacturing (For example if it is 20, it would be 20th week). If it is a 6 digit number, for example 170425, date would be 25th April 2017