The Siemens 3VA2163-5HN36-0DC0 is a 3-pole SENTRON molded case circuit breaker rated for 63 A continuous current, with an ETU350 electronic trip unit and an integrated undervoltage release. It carries 187 kA breaking capacity at 240 V AC and 121 kA at 415/440 V AC — numbers that tell you it handles serious fault current without cascading upstream.
The breaker measures 105 mm wide by 181 mm tall by 86 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON panelboard and switchgear assemblies without re-drilling. The auxiliary contact version ships with 2 HQ switches (3VA9608-0BB25) for status feedback to a PLC or annunciator. Ambient operating range is -25 °C to 70 °C, with no derating needed up to 50 °C at 63 A; above that, current tapers to 53.55 A at 70 °C.
Rated insulation voltage 800 V. Breaking capacity at 690 V: 4.25 kA. Maximum power loss 6.5 W. Mechanical endurance 20,000 operations. Storage range -40 °C to 80 °C.