The thyristor type 5STP 24H2800 is still available. You can download the datasheet here: https://library.e.abb.com/public/e6ef4a5d9178c9f483257c63004d8439/5STP%2024H2800_5SYA1047-03May%2007.pdf
Please check the parameters of the datasheet for your specific application. In case of further question please contact your sales representative.
If you want to purchase a product, need any pricing information or need help or support from ABB, please contact your local partner.