
Electrical relays. Tests and measurements. Proof tracking index (PTI).
STANDARD published on 27.1.2026
Designation standards: BS EN IEC 63522-43:2026
Publication date standards: 27.1.2026
The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
Country: British technical standard
Category: Technical standards BS
ISBN: 978 0 539 20397 4 Status: Definitive