Compact Type 2+3 AC Surge Protection for 3P+N Systems
LY1-D20/3(S)+1 is a compact 3P+N pluggable Type 2+3 AC surge protective device for three-phase plus neutral systems. Its coordinated MOV and GDT structure provides L-N and N-PE protection with 10kA nominal discharge current and 20kA maximum discharge current for downstream and final-distribution applications.
Klasse II+III / Typ 2+3 Schutz für nachgeschaltete AC-Stromkreise
3P+N configuration with L-N and N-PE protection
Koordinierte MOV- und GDT-Überspannungsschutztechnologie
Pluggable modules with visual indication and optional remote contact
Geeignete Anwendungen
LY1-D20/3(S)+1 is suitable for three-phase plus neutral systems requiring coordinated Type 2+3 surge protection close to downstream equipment and final distribution circuits.
Unterverteilerschränke
For downstream protection in commercial and industrial three-phase plus neutral distribution boards.
Industrielle Steuerungsschränke
Suitable for machinery controls, automation cabinets, HVAC panels, and production equipment.
Gewerbliche Einrichtungen
Helps protect office buildings, retail systems, building controls, and sensitive commercial loads.
Solarwechselrichter AC-Panels
Für Drehstrom-Solarwechselrichter AC-seitige Panels, wenn die gewählte Uc-Bewertung mit der Systemspannung übereinstimmt.
FAQ
Common questions about LY1-D20/3(S)+1 compact 3P+N pluggable Type 2+3 AC surge protective device selection.
What is LY1-D20/3(S)+1 used for?
LY1-D20/3(S)+1 is used for downstream and final-distribution surge protection in three-phase plus neutral AC systems. It helps limit transient overvoltage through coordinated L-N and N-PE protection paths.
Was bedeutet 3P+N?
3P+N means the SPD is designed for three phase conductors plus neutral, with MOV protection on the L-N paths and a GDT protection path between N-PE.
Is LY1-D20/3(S)+1 a Type 2 or Type 3 SPD?
LY1-D20/3(S)+1 is classified as Class II+III / Type 2+3, making it suitable for coordinated downstream and final-distribution surge protection.
Welche Schutztechnologie wird verwendet?
It combines high-energy MOV protection on the L-N paths with a GDT on the N-PE path, providing coordinated surge protection for three-phase plus neutral systems.
Welche Entladestrombewertungen bietet es an?
Es bietet einen nominalen Entladestrom von 10 kA und einen maximalen Entladestrom von 20 kA sowohl auf dem L-N- als auch auf dem N-PE-Schutzweg.
Was sollte vor der Bestellung bestätigt werden?
Confirm the nominal L-N voltage, required Uc and Up level, 3P+N wiring arrangement, 125A maximum backup-fuse coordination, conductor size, DIN-rail space, and optional remote-contact requirement.
