7SN3310-...01
SOL.-ST.DIRECTIONAL EARTH-FAULT DETECTION RELAY F. CONTINUOUS EARTH FAULT W/O POWER SUPPLY W. SEPARATE INDICATION/ALARM TWO DIRECTIONS, 50HZ IN 7XP1025 CASE (SIZE 1/3) CUBICLE FLUSH MOUNTING PLUG CONNECT.,DEG.OF PROT.IP20
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