The BSPA050480D1P is an Eaton Bussmann series surge protection device designed to protect three-phase electrical systems from transient overvoltages. It is rated for 480V Delta configuration with a 50 kA interrupt rating and features a NEMA 4X stainless steel enclosure for outdoor and corrosive environments. The device operates across 50/60 Hz frequencies with a temperature range of -40°C to +65°C, ensuring reliable performance in diverse climatic conditions. It is certified to UL 1449 standards and configured for external side mounting on electrical panels. This surge protective device is commonly used in industrial power distribution systems, commercial facilities, and critical infrastructure to safeguard equipment from lightning strikes and switching transients.