fixed-mounted circuit breaker, IEC 60947-2, size 2, 3-pole, In=4000 A up to 690 V AC 50/60 Hz, breaking capacity S Icu=66/50 kA at 500/690 V, tripping unit ETU600 LSIG upgradeable, color display, Bluetooth, USB interface, basic protection LT, ST, INST, GFx, neutral conductor protection requires an external neutral point current sensor, trip alarm switch (1 x CO), connection at rear horizontal