What this 3VA2340-6JP32-0HH0 brings to the panel
The Siemens 3VA2340-6JP32-0HH0 is a SENTRON 3-pole molded case circuit breaker rated for 400 A continuous current at 40 °C, with a maximum interrupting capacity of 242 kA at 240 V AC. That interrupting figure drops to 187 kA at 415 V and 440 V, and to 121 kA at 500 V — still well above typical fault levels for most industrial distribution panels. At 690 V it holds 7.5 kA, which is the limit for that voltage tier. It includes a communication function, which lets the panel communicate trip status, current draw, and alarm conditions to a PLC or SCADA system without separate metering.
Thermal derating — where the 400 A rating holds and where it tapers
At 55 °C it derates to 375 A, at 60 °C to 350 A, at 65 °C to 325 A, and at 70 °C to 300 A.
The 3VA1110-5EF32-0AM0 is a physically smaller frame and will not drop into a panel wired for the 3VA2340-6JP32-0HH0 without busbar and lug changes. The 3VA2340 frame uses larger line and load terminals rated for the full 400 A path; the 3VA1110 terminals are sized for lower current.