FIXED-MOUNTED CIRCUIT BREAKER 3-POLE, SIZE I, IEC IN=1250A TO 690V, AC50/60HZ ICU=66KA AT 500V FRNT.CONN. TOP/BOT. SINGLE-HOLE ELECTRONIC TRIP UNIT ETU 45 LSIN PROT ADJUST. 0.4-1 IN WITH CUBICLE BUS AND EARTH FLT COMMUN./MEASURING FUNC./ ZSS OPTION MOT./MAN. OPER.MECHAN. W.STOR. DRIVE MOTOR AC 50/60HZ 208-240V BZW DC 220-250V REQU. AC 50/60HZ 230V, DC 220V WITHOUT 1ST SHUNT TRIP WITH 2ND AUX. RELEASE "R", F3 UNDERVOLTAGE, NON-DEL. DC 48V 2NO+2NC