fixed-mounted circuit breaker, IEC 60947-2, size 1, 4-pole, N pole on right, In=2000 A, breaking capacity E, without internal voltage tap up to 1150 V AC 50/60 Hz, Icu=85/70 kA at 1000/1150 V, ETU300 LSI electronic trip unit optimized for standard applications, without display, basic protection LT, ST, INST, including protection of the N conductor (internal neutral point sensor available) trip alarm switch (1 x CO), connection at rear vertical,