INT.AUT.3VA 160A 3P 55KA ETU3 LSI L/T

This appears to be a product or model identifier. Without further context, it's difficult to provide a precise translation.

Here's a breakdown of the potential meaning based on common abbreviations in technical fields:

• INT: Could stand for "Internal" or "Integer"
• AUT: Likely refers to "Automatic"
• 3VA: Possibly a specific model designation or version number
• 160A: Indicates an amperage rating of 160 Amps
• 3P: Stands for "Three-Phase"
• 55KA: Suggests a short-circuit current rating of 55 kA (kiloamps)
• ETU3: Could be a specific product series or feature code
• LSI: Likely refers to "Low Switching Impedance"
• L/T: Possibly stands for "Long Term" or "Lifetime"