1SDA055673R1 ABB

Code / Model:
Manufacturer: abb
Department: Unclassified
Category of products: Unclassified
Sub-category: Unclassified
You've seen it before.: 1

E1B 1600 PR121 / P-LSI IN = 1600A 4P F HR

This appears to be a code or identifier. Without further context, it's difficult to determine its exact meaning.

Let me know if you have any more information about this code, and I can try to provide a more specific translation and explanation.