Fixed-mounted circuit breaker 4-pole, Size 1, IEC In=1600 A up to 690 V, 50/60 Hz AC Icu=85 kA at 500 V Rear vertical 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 With 1st auxiliary release Shunt release "F", F1 50/60 Hz 110 V AC/110 V DC, 100% on-load factor without 2nd auxiliary release 2NO+2NC F23= Internal current transformers 4-pole switch BGI S07= Castell/Fortress in Off position with 4 padlocks T40= Door sealing frame