The Siemens 6SL3056-4AA34-0AV0 is an ammeter for the SINAMICS V50 drive family, with a display range of 0-400 A and a 0-20 mA analog input signal. This is a made-to-order item (product class D), meaning each unit is built to customer specifications and cannot be reused — order exactly what your BOM calls for, no substitutions. Rated for a 0-20 mA loop input, the meter scales the current reading linearly across the 0-400 A range. The input loop is passive (sinking), so it expects a powered transmitter or a drive analog output — verify your SINAMICS V50 terminal assignment before wiring.
Group code R220 and product group 4923 are internal Siemens classification fields used for ordering data overview. They do not affect fit or function but help cross-reference the part in Siemens' own catalog tools. Export control classifications are AL: N / ECCN: N, meaning no special export license is required for most destinations. REACH candidate-list compliance information is available on request.