The Siemens SENTRON 3VA2510-6HK32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 1000 A at 40 °C ambient and an insulation voltage Ui of 800 V.
Thermal derating and trip unit
Full 1000 A rating holds through 55 °C; at 60 °C it derates to 955 A, at 65 °C to 885 A, and at 70 °C to 815 A. The ETU340 electronic overcurrent release is adjustable for Ir and tr — Ir maxes at 1000 A with a fixed tr of 1300 ms, meaning the long-time pickup and delay are set for coordination with downstream devices. Power loss maxes at 330 W, so panel ventilation matters at full load.
Dimensions: 320 mm high, 210 mm wide, 120 mm deep — fits standard MCCB panel cutouts. Front protection is IP40, suitable for enclosed switchboards; storage range -40 °C to 80 °C, operating -25 °C to 70 °C.
