Siemens 3VA2063-6HL32-0AE0 — 63 A MCCB with ETU320, active production
The ETU320 is an electronic overcurrent release with no communication function, no undervoltage release, and no ground-fault monitoring — it is a straight line-protection trip unit. Four auxiliary switches (HQ type) are integrated for status feedback to a PLC or panel indicators.
Thermal derating and operating limits
The 63 A rating holds flat at 40 °C, 45 °C, and 50 °C. Above that, the continuous current derates per the datasheet curve: 60.6375 A at 55 °C, 58.275 A at 60 °C, 55.9125 A at 65 °C, and 53.55 A at 70 °C. Operating ambient range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Maximum power dissipation is 5.4 W.
Panel fit and mounting
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep. Front-face protection class is IP40. The breaker accepts a supplied basic switch (order code 3VA2063-6HL32-0AA0) and has no voltage trigger or phase-failure detection. Latching endurance is rated at 20,000 operations.
