400 A MCCB with 242 kA interrupting capacity
The frame is designed for line protection, not motor-starting duty, so it's the right call for distribution, not individual motor starting. Rated current holds flat at 400 A from 40 °C up to 50 °C, then derates to 375 A at 55 °C and 300 A at 70 °C.
Built-in accessories and communication
That's enough aux contacts for a remote status lamp and a PLC digital input, with the alarm contact dedicated to the trip event. The basic switch core is order code 3VA2340-6JP32-0AA0, so the accessories are factory-integrated, not field-added. Communication function is onboard — the exact protocol isn't listed here, but the breaker is ready for a SENTRON communication module to feed power-monitoring data upstream. If you need UVR or GF protection, that's a different suffix. The shunt trip covers emergency-off and remote-trip scenarios; for ground-fault, you'd add an external relay or choose a GF variant.
Physical fit and thermal management
Dimensions are 248 mm high, 138 mm wide, 110 mm deep — a standard 3-pole MCCB footprint for Siemens SENTRON 3VA frames.