INT.AUT.3VA 1000A 3P 55KA ETU3 LIG L/T

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

Here's a breakdown of the potential meaning based on common industry conventions:

• INT: Could indicate "Internal" or "Interior"
• AUT: Likely stands for "Automatic"
• 3VA: Possibly a model number or specific product designation
• 1000A: Could refer to the amperage rating (1000 Amps)
• 3P: Indicates "Three-Phase" power
• 55KA: Might represent the short-circuit breaking capacity (55 kAmps)
• ETU3: Likely a specific feature, type, or version identifier
• LIG: Could stand for "Lighting" or "Load"
• L/T: Possibly "Low Tension" or "Line to Terminal"