Siemens 3VA2450-5JP42-0AA0 — 500 A SENTRON MCCB with ETU550 Trip Unit
The 121 kA at 415 V and 440 V is the number to check for 400 V-class distribution; at 500 V it still holds 75.6 kA.
Thermal Derating and Power Loss
Above that, derating begins: 477 A at 55 °C, 455 A at 60 °C, 432 A at 65 °C, and 410 A at 70 °C. Maximum power loss is 99 W, which factors into the enclosure thermal calculation.
Integration and Communication
The 3VA2450-5JP42-0AA0 includes a communication function, which on the 3VA2 platform typically means it can accept a plug-in communication module for PROFIBUS, PROFINET, or Modbus RTU — enabling remote trip indication, current metering, and parameter adjustment. Dimensions are 184 mm wide, 248 mm high, and 110 mm deep — a standard 4-pole MCCB footprint for the 500 A frame size.
No last-time-buy or end-of-life notice applies.