What the ratings mean for fit
The Siemens 3VA2163-5HN46-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection in a 4-pole configuration. Its continuous current rating Iu is 63 A, and it holds that rating across the full ambient range from 40 °C to 70 °C — no derating needed up to the maximum operating temperature. The ETU350 electronic trip unit provides adjustable overload and short-circuit protection curves, which is what you program during commissioning to coordinate with downstream breakers. Breaking capacity is the headline: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. At 415 V, that 121 kA means it can safely interrupt a fault current up to that level without the arc flashing over — critical for high-fault installations like transformer secondaries or large motor control centers. The 690 V rating drops to 3.7 kA, so if your system runs at that voltage, verify the available fault current is below that threshold. Rated insulation voltage Ui is 800 V, and the operating voltage is rated at 690 V AC. The front face carries IP40 protection — fine for a dry indoor panel, but not for washdown areas. The N-conductor protection is adjustable between OFF and 100%, which matters when you are protecting a 4-wire system and need to decide whether the neutral is switched or solid.
Sourcing and lifecycle reality
Power loss is rated at a maximum of 4 W, which is low enough that you do not need to account for significant heat buildup in a densely packed panel. Storage temperature range is -40 °C to 80 °C, and operating range is -25 °C to 70 °C — the storage limit is for handling and warehousing, not running.
Panel integration and dimensions
The 3VA2163-5HN46-0AA0 measures 86 mm deep, 140 mm wide, and 181 mm high. It is a standard MCCB footprint for the SENTRON 3VA2 frame.