The Siemens SENTRON 3VA2340-6JQ32-0KC0 is a 3-pole molded case circuit breaker rated 400 A full-scale, with an interrupting capacity of 242 kA at 240 V and 187 kA at 415 V. The basic switch variant is 3VA2340-6JQ32-0AA0.
Interrupting and thermal derating
At 240 V the breaker clears 242 kA; at 415 V and 440 V it holds 187 kA, dropping to 121 kA at 500 V and 7.5 kA at 690 V. The thermal continuous current is flat at 400 A from 40 °C through 50 °C, then derates to 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. Maximum power loss is 96 W.
Dimensions and environment
The adjustable trip initial value is 80 A.