The Schneider VW3AE0109 is a circuit breaker designed as a protection accessory for Altivar 71 Plus and Altivar 61 Plus floor-standing enclosures with separate air flows or compact versions. It mounts inside the drive cabinet to provide overcurrent protection for the drive's input power circuit.
What It Fits and Why It Matters
This circuit breaker is specific to Altivar 71 Plus and Altivar 61 Plus drives in floor-standing enclosures — not the panel-mount or IP20 versions. The 'separate air flows or compact version' designation means it fits both the standard and the space-saving cabinet layouts. If you are maintaining an installed base of these drives and the original breaker has failed or is missing, this is the exact OEM part that preserves the UL/IEC coordination the drive was originally tested with.