The Siemens 3VA2163-6HL36-0HH0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 63 A continuous current with an ETU320 electronic trip unit. The interrupting capacity hits 242 kA at 240 V — that's the headline number for fault-clearing on a high-available-fault-current bus, like a main breaker in an industrial switchboard. At 415/440 V it still holds 187 kA, dropping to 121 kA at 500 V and 5 kA at 690 V. The 3-pole unit ships with a shunt trip (STL) release and 2 auxiliary switches plus 1 trip alarm switch (HQ configuration).
Trip unit and release configuration
The ETU320 is an electronic overcurrent release — it gives you adjustable long-time, short-time, and instantaneous protection curves, plus ground-fault capability (though this variant ships without ground-fault monitoring). The shunt trip (STL) allows remote tripping from a PLC or emergency-stop circuit. No undervoltage release, no communication module, no phase-failure detection on this build.
Thermal derating and mounting dimensions
Rated 63 A straight through 50 °C ambient; above that it derates — 60.6 A at 55 °C, 58.3 A at 60 °C, 55.9 A at 65 °C, 53.6 A at 70 °C. The 105 mm width, 181 mm height, and 86 mm depth match the standard 3VA2 panel cutout. Max power loss is 4 W. Operating range is -25 °C to 70 °C; storage range -40 °C to 80 °C.