withdrawable circuit breaker without guide frame 4-pole, size I, IEC In=1600A to 690V, AC50/60Hz Icu=66kA at 500V rear connection horizontal Overcurrent release ETU45 LSIN protection adjustable 0.4-1 in with display and cubicle bus Opt.: Comm. /measuring func./ground fault/ ZSS With manual operating mechanism with storage with mechanical request without 1st auxiliary release without 2nd auxiliary release 2NO+2NC B08= Rated current reference module 800 A for ETU25, 27, 45, 55, 75, 76 for setting rated current in F05= Measuring function plus for U, I, P, W Harmonics and total harmonic distortion F12= COM16 Modbus module with breaker status sensor