What this 500 A SENTRON MCCB does on the line
Rated 500 A continuous at 40 °C, it holds that same 500 A all the way up to 50 °C, then derates to 480 A at 70 °C. That thermal curve means you don't lose headroom in a warm enclosure as long as ambient stays under 50 °C. Three-pole construction, 248 mm tall by 138 mm wide by 110 mm deep — standard SENTRON 3VA frame footprint.
Short-circuit withstand — where it interrupts and where it doesn't
The interrupting ratings climb fast as voltage drops: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, then falls to 9 kA at 690 V. At 240 V though, 187 kA covers nearly any industrial service entrance. The limited-to-1-second rating is 6 kA, which governs the short-time delay setting for selective coordination downstream.
The undervoltage release (UVR) is built in, so verify your control voltage matches the release rating before energizing; if the UVR coil sees a dropout, the breaker trips instantly. Phase failure detection is internal — no external phase-loss relay needed for motor protection.