DZ47sY Surge Protector, DZ47sYII 20kA 3P+N 275V Protects lowvoltage electrical systems from transient overvoltages and lightninginduced surges. Designed for use on threephase plus neutral circuits with a 275V nominal system voltage and a 20kA surge current rating. Key benefits Protects equipment and reduces downtime: Limits damaging voltage spikes that can shorten the life of sensitive electronics and electrical equipment. Clear compatibility: Built for 3P+N systems at 275V and labeled as DZ47sY and DZ47sYII models for straightforward specification and replacement. Robust surge handling: 20kA surge current capacity provides strong transient suppression for typical distribution environments. Spaceefficient installation: Modular footprint designed to sit alongside common distribution components, helping preserve panel space. Reliable operation: Provides continuous protection without manual intervention so systems remain protected while installed. Main features and attributes Function: Surge protective device for transient overvoltage suppression on lowvoltage distribution circuits. Models: DZ47sY and DZ47sYII, specified for 3P+N applications. Electrical rating: 20kA surge current capacity, nominal system voltage 275V. Compatibility: Intended for use on threephase plus neutral circuits and in distribution boards that accept modular surge protectors sized for DZ47 form factors. Form factor and installation: Modular design for installation alongside circuit protection devices; suitable for typical electrical distribution panels. Construction: Durable housing and internal components selected for consistent surge suppression performance and long service life. Why customers choose this unit Straightforward replacement and planning: Model names and electrical ratings match common specifications used in panel design and equipment protection plans. Practical protection for a range of installations: Adequate surge capacity for residential, commercial, and light industrial distribution panels without occupying excessive panel space. Reduces potential and replacement costs by limiting exposure of downstream equipment to voltage transients. Typical applications Residential distribution boards: Protects household appliances, entertainment systems, and home automation equipment from transient surges entering via the mains. Small commercial and office premises: Protects IT equipment, phone and network infrastructure, and lighting control systems in office distribution panels. Light industrial control panels: Protects PLCs, sensors, drives, and control electronics in manufacturing cells and machine enclosures. Installation and selection tips Confirm system configuration is 3P+N and nominal voltage is 275V before specifying this unit. Match the DZ47sY or DZ47sYII model to the panel layout and available modular slots to ensure a neat installation. Use as part of a coordinated protection approach with upstream and downstream protective devices where applicable. This surge protector provides targeted transient suppression for 3P+N 275V systems with a 20kA rating, offering a compact, compatible solution for protecting distribution panels and the equipment they serve.