What the order code resolves to
The ABB ACS800-04-0020-3+K454+L508+R700 is the ACS800-04 wall-mount AC-drive frame carrying the K454, L508 and R700 factory option bundle, catalogued as a Motor Drives product. The full string is the order code an integrator hands to procurement; the +K454, +L508 and +R700 suffixes are the parts of that bundle that decide which firmware option, control terminal set and brake-chopper/resistor configuration leave the factory on this specific unit.
Cabinet and handling footprint
The drive ships at 2.45 kgs, which keeps it inside the single-person lift envelope for panel mounting and leaves the cabinet's center-of-gravity budget for line reactors or chokes fitted beside it. For panel-OEM wireman planning the gland plate, that mass figure governs how many units can share one mounting plate without a support brace, not how the drive itself is specified.