SWITCH 3VA23; 3-SPEED IN=250A; CAPABILITY SHORT?. ICU=200KA@415VAC; WITH CHALLENGE ELECTRONIC ETU350 AND INSTALLATION AND GENERATOR PROTECTION FUNCTIONS IN LSI; WITH SECUR. AGAINST… IR = 100…250A, TR = 0.5??¦17S; WITH SECUR. SHORT – SHORT. ISD = 1.5??¦10 X IR, TSD = 0??¦0.4S; WITH SECUR. SHORT – NO SENSOR. II=375…3000A; WITHOUT INSTALLED AUXILIARY TRIP FACTORY, NO INSTALLED FACTORY AUXILIARY CONTACTS; WITH SCREW CONNECTIONS