Compact Type 2+3 AC Surge Protection for Two-Pole Circuits
LY1-D20M/2(S) is a compact two-pole pluggable Type 2+3 AC surge protective device designed for single-phase distribution systems and space-limited control panels. Its high-energy MOV modules provide fast surge limitation through L-PE and N-PE protection paths, with 10kA nominal discharge current and 20kA maximum discharge current.
Class II+III / Type 2+3 downstream surge protection
Compact two-pole design with L-PE and N-PE protection
10kA nominal and 20kA maximum discharge current
Replaceable cartridges with visual indication and optional remote contact
Applications appropriées
LY1-D20M/2(S) is suitable for compact single-phase AC systems requiring two-pole Type 2+3 surge protection in limited DIN-rail space.
Compact Distribution Boards
For residential, commercial, and light-industrial panels with limited DIN-rail space.
Armoires de contrôle
Suitable for compact machinery controls, automation cabinets, HVAC systems, and equipment panels.
UPS & Telecom Power
Helps protect UPS inputs, telecom power supplies, communication equipment, and sensitive electronic loads.
Solar Inverter AC Boxes
For single-phase solar inverter AC-side boxes when the selected Uc rating matches the system voltage.
FAQ
Common questions about LY1-D20M/2(S) compact two-pole pluggable Type 2+3 AC surge protective device selection.
What is LY1-D20M/2(S) used for?
LY1-D20M/2(S) is used for downstream and final-distribution surge protection in compact single-phase AC systems. It helps limit transient overvoltage through two protection paths before the surge reaches connected equipment.
Is LY1-D20M/2(S) a single-pole or two-pole SPD?
LY1-D20M/2(S) is a two-pole surge protective device. The existing page title describing it as single-pole should be changed to two-pole.
Is LY1-D20M/2(S) a Type 2 or Type 3 SPD?
LY1-D20M/2(S) is classified as Class II+III / Type 2+3, making it suitable for coordinated downstream and final-distribution surge protection.
Does this product use MOV or GDT protection?
The product specification identifies high-energy MOV protection. The previous body text describing the complete product as a GDT SPD should be removed to keep the page technically consistent.
Quelles sont les valeurs de courant de décharge qu'il fournit ?
It provides 10kA nominal discharge current In and 20kA maximum discharge current Imax, both based on the 8/20μs current waveform.
Que doit-on confirmer avant de commander ?
Confirm the nominal system voltage, required Uc and Up level, two-pole wiring arrangement, 125A maximum backup-fuse coordination, conductor size, available DIN-rail space, and optional remote-contact requirement.
