What the 12-Pulse Input Switch Does
The VW3AE2420 switch enables a 12-pulse input topology in Altivar 61 Plus and 71 Plus floor-standing enclosures. It is a control accessory for the 12-pulse rectifier assembly.
Integration Note for Panel Builders
This switch is destined for Altivar floor-standing enclosures with separate air flows or the compact version. It is not a standalone component — it mounts inside the drive cabinet as part of the 12-pulse rectifier assembly. For a panel OEM wireman, verify that the enclosure has the dedicated mounting bracket and bus-bar provisions for the 12-pulse kit; the switch itself is a control accessory, not a power device, so it interfaces with the drive's control wiring rather than the main DC bus.