Eaton SPD3200-TN-E, 3 Phase 200ka 3 Mode Alarm Common Mode, Input 380-440vac 3P, Operating voltages 380 – 440vac 3 phase, Microprocessor control design, Provides portable power. The SPD3200-TN-E is designed to protect three phase power systems against damage from surges and spikes caused by lightning and other electrical sources. The unit is intended for point of entry or main board protection and is connected in parallel with the power system via its own safety disconnect MCB.