Compact Type 2+3 AC Surge Protection for Three-Phase Systems
LY1-D20M/4(S) is a compact four-pole pluggable Type 2+3 AC surge protective device designed for three-phase plus neutral distribution systems. Its high-energy MOV modules provide coordinated surge limitation across L1, L2, L3, and N, with 10kA nominal discharge current and 20kA maximum discharge current.
Class II+III / Type 2+3 downstream surge protection
Compact 4P design for L1, L2, L3, and neutral protection
Corriente de descarga nominal de 10kA y corriente máxima de 20kA
Individually replaceable cartridges with optional remote contact
Aplicaciones adecuadas
LY1-D20M/4(S) is suitable for compact three-phase plus neutral systems requiring coordinated Type 2+3 surge protection in limited DIN-rail space.
Three-Phase Distribution Boards
For compact commercial and industrial three-phase plus neutral distribution panels.
Paneles de Control Industriales
Suitable for machinery controls, automation cabinets, HVAC panels, and factory equipment.
Commercial Facilities
Helps protect building electrical cabinets, retail facilities, offices, and commercial equipment.
Solar Inverter AC Panels
For three-phase solar inverter AC-side panels when the selected Uc rating matches the system voltage.
PREGUNTAS FRECUENTES
Common questions about LY1-D20M/4(S) compact four-pole pluggable Type 2+3 AC surge protective device selection.
¿Para qué se utiliza LY1-D20M/4(S)?
LY1-D20M/4(S) se utiliza para la protección contra sobretensiones en la distribución final y en el nivel de distribución en sistemas AC trifásicos más neutro. Proporciona protección coordinada para los conductores L1, L2, L3 y neutro.
¿Qué protege la configuración de cuatro polos?
La configuración de cuatro polos protege los conductores de tres fases y el conductor neutro en un sistema eléctrico trifásico de cuatro hilos.
Is LY1-D20M/4(S) a Type 2 or Type 3 SPD?
LY1-D20M/4(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 verified product specifications identify high-energy MOV protection. The previous description referring to the complete product as a neon-gas GDT SPD should be removed.
¿Qué clasificaciones de corriente de descarga proporciona?
It provides 10kA nominal discharge current In and 20kA maximum discharge current Imax, based on an 8/20μs current waveform.
Can each protection cartridge be replaced separately?
Yes. The pluggable design allows individual protection cartridges to be inspected or replaced without removing the permanently wired base.
