SAO PAULO--(BUSINESS WIRE)--Fitch Ratings has affirmed ISA Capital do Brasil S.A.'s (ISA Capital) foreign and local currency Issuer Default Ratings (IDRs) at 'BB+', and its national scale rating at 'AA-(bra)'. In addition, Fitch has affirmed the company's USD31.6 million outstanding senior secured notes at 'BBB-'. The Rating Outlook is Stable. Concurrently, Fitch has affirmed Companhia de Transmissao de Energia Eletrica Paulista S.A.'s (CTEEP) national scale long-term rating at 'AA+(bra)'. The