The Siemens SENTRON 3VA2340-6JQ32-0DL0 is a 3-pole molded case circuit breaker rated for 400 A continuous current (Iu) across the 40 °C to 50 °C ambient band — no derating needed in that range. Above 50 °C the curve steps down: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. That means a panel running at 40 °C ambient gets the full 400 A; if the enclosure runs hot, you lose 25 A per 5 °C rise above 50 °C. Breaking capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 40 kA at 690 V. For a 480 V distribution panel (common in North America), the 187 kA at 440 V figure is the closest published value — well above typical available fault current in most industrial switchboards. The ETU560 electronic trip unit handles the protection curve. Communication function is present, so the breaker can report status to a higher-level control system.
Integration and mounting dimensions
The 138 mm width is the panel cutout width for a 3-pole frame; verify against your existing busbar or riser spacing.
Included releases and accessories
The base switch is order code 3VA2340-6JQ32-0AA0. The integrated auxiliary trip is 3VA9608-0BB25.