LV generator protection - engineering site - Schneider Electric

6.1. Characteristics tablesof circuit breakersMasterpact NT06 to NT16056408sicommon characteristicsnumber of poles 3 / 4rated insulation voltage (V) Ui 1000/1250impulse withstand voltage (kV) Uimp 12rated operational voltage (V AC 50/60 Hz) Ue 690suitability for isolation IEC 60947-2degree of pollution IEC 60664-1 3circuit-breaker characteristics as per IEC 60947-2rated current (A) In at 40 °C / 50 °C**rating of 4th pole (A)sensor ratings (A)type of circuit breakerultimate breaking capacity (kA rms) Icu 220/415 VV AC 50/60 Hz440 V525 V690 Vrated service breaking capacity (kA rms) Ics % Icurated short-time withstand current (kA rms) Icw 0.5 sV AC 50/60 Hz3 sintegrated instantaneous protection (kA peak ±10%)rated making capacity (kA peak) Icm 220/415 VV AC 50/60 H440 V525 V690 Vbreak time (ms)closing time (ms)circuit-breaker characteristics as per NEMA AB1breaking capacity (kA)V AC 50/60 Hz240 V480 V600 Vswitch-disconnector characteristics as per IEC 60947-3type of switch-disconnectorrated making capacity (kA peak) Icm 220/415 VV AC 50/60 Hz440 V500/690 Vrated short-time withstand current (kA rms) Icw 0.5 sV AC 50/60 Hz3 sultimate breaking capacity (Icu) with external protection relay,maximum delay 350 msinstallation, connection and maintenanceservice life mechanical with maintenanceC/O cycles x 1000without maintenanceelectrical without maintenance 440 V690 Vmotor control (AC3-947-4)690 Vconnection drawout FCRCfixed FCRCdimensions (mm) drawout 3PH x W x D4Pfixed 3P4Pweight (kg) drawout 3P/4P(approximate) fixed 3P/4P* see the current-limiting curve in the "additional characteristics" section** 50 °C: rear vertical connected. Refer to temperature derating tablesfor other connection types.(1) SELLIM system.48