The Siemens 3VA2340-6KP32-0CL0 is a SENTRON molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C, with a maximum interrupting capacity of 242 kA at 240 V and 187 kA at 415 V. It is a 3-pole, line-protection design with an integrated undervoltage release and communication function, making it suitable for main feeder or large subfeed applications in industrial switchgear.
The 400 A continuous rating holds flat from 40 °C to 50 °C, then derates to 375 A at 55 °C and 300 A at 70 °C — the thermal curve governs real-world ampacity in a closed cabinet. The 242 kA interrupting rating at 240 V confirms fault-clearing capability at the service entrance; at 690 V the rating drops to 7.5 kA, so verify the available fault current at your system voltage. Panel footprint: 248 mm height, 138 mm width, 110 mm depth.
Integration details
The communication function enables integration with higher-level monitoring systems — useful for a semiconductor fab's power distribution monitoring where a single particle event from an unmonitored fault can scrap a wafer lot.