The VW3A9550 is an empty enclosure kit that adds 600 mm of cabinet depth to an ATV61 or ATV71 drive installation. It ships as a bare enclosure — no backplane, no wiring — intended for housing additional options or customer-supplied components alongside the drive. Cable entry is via the enclosure bottom or from the left, giving the panel builder two routing paths without extra gland plates. The colour code is RAL 7022 (plinth) and RAL 7032 (case), which matches the standard ATV61/ATV71 drive enclosures for a uniform panel appearance. Ambient temperature range is 0 to 45 °C outside the enclosure and 0 to 50 °C inside the enclosure — the internal rating is higher because the drive itself generates heat; the enclosure is designed to keep internal air below that ceiling.
What to watch when specifying this enclosure
The 600 mm extension is an add-on kit, not a standalone cabinet. It bolts onto the base drive enclosure, so verify that the mounting footprint matches the ATV61/ATV71 frame size you have — the kit is frame-specific, not universal across the series. Because the part is obsolete, there is no guarantee of continued dimensional or colour-match consistency with current-production drive enclosures. If panel cosmetics matter (e.g., a multi-drive lineup), order enough kits in one lot to avoid a mismatch.