Fixed-mounted circuit breaker 4-pole, Size 2, IEC In=2000 A to 690 V, 50/60 Hz AC Icu=66 kA at 500 V Rear horizontal connection Overcurrent release ETU 27 LSING protection adjustable 0.4-1 in Ground fault/N protection integrated With manual operating mechanism with storage with mechanical request without 1st auxiliary release without 2nd auxiliary release 2NO+2NC B16= Rated current reference module 1600 A for ETU25, 27, 45, 55, 75, 76 for setting rated current in F23= Internal current converter 4-pole switch BGII S30 = LOCKING DEVICE AGAINST OP. S33= Castell/Fortress Tension lever T40= Door sealing frame