The SENTRON 3VA2163-6HL46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, designed for line protection in distribution panels. It carries an ETU320 electronic trip unit with an adjustable trip range from 95 A up to 756 A, so you set the actual protection threshold to match the downstream load — not fixed at the 63 A frame rating.
Breaking capacity — what the numbers mean for your fault-current study
This MCCB delivers 242 kA interrupting capacity at 240 V, dropping to 187 kA at 415 V and 440 V, then 121 kA at 500 V. At 690 V it still clears 3.7 kA. Those are the maximum fault currents the breaker can safely interrupt at each voltage level — your coordination study needs to confirm that the available fault current at the breaker's location stays under these values at the system voltage you actually run. The 242 kA at 240 V is among the highest in the 3VA2 frame class, so it handles high-capacity transformer secondaries without cascading upstream.
Thermal performance — no derating up to 70 °C
The 63 A continuous rating holds flat from 40 °C all the way to 70 °C ambient — no derating curve to calculate. That simplifies panel layout in warm environments or enclosures with multiple heat sources. The insulation voltage is rated 800 V, and the front face carries IP40 protection (tools and fingers, not hose-down).
Panel fit — dimensions and mounting
The 3VA2163-6HL46-0AA0 measures 181 mm high × 140 mm wide × 86 mm deep. It mounts on a DIN rail in the distribution panel. The 4-pole form factor takes up the same footprint as a standard 4-pole MCCB — no special cutout or adapter plate needed.