The VW3AE0143 is a circuit breaker accessory from the Altivar 71 Plus and Altivar 61 Plus drive range, designed as a protection accessory for Altivar floor-standing enclosures with separate air flows or the compact version.
What it does in the drive system
This circuit breaker mounts inside the Altivar floor-standing enclosure, providing overcurrent protection for the drive branch circuit. It is a protection accessory, not a standalone disconnect — it integrates with the enclosure's separate air-flow design or compact layout.