Compact Type 2+3 AC Surge Protection for Final Distribution Circuits
LY1-D20/1(S) is a single-pole pluggable Type 2+3 AC surge protective device designed for sub-distribution boards and downstream equipment circuits. Its high-energy MOV module provides fast transient-voltage limitation with 10kA nominal discharge current and 20kA maximum discharge current, making it suitable for compact final-distribution protection.
Proteção Classe II+III / Tipo 2+3 para circuitos AC a jusante
Corrente de descarga nominal de 10kA e corrente de descarga máxima de 20kA
75V to 440V AC versions for different low-voltage systems
Replaceable cartridge with visual indication and optional remote contact
Aplicações Adequadas
LY1-D20/1(S) is suitable for downstream and final-distribution AC circuits requiring compact Type 2+3 surge protection close to sensitive electrical equipment.
Quadros de sub-distribuição
For downstream surge protection in residential, commercial, and light-industrial distribution panels.
Painéis Residenciais
Suitable for household consumer units and residential electrical distribution systems.
Equipment Supply Circuits
Helps protect control equipment, electronic loads, and machinery supply circuits from transient overvoltage.
Caixas de Inversores Solares AC
For AC-side solar inverter boxes when the selected Uc version matches the installation voltage.
FAQ
Common questions about LY1-D20/1(S) single-pole pluggable Type 2+3 AC surge protective device selection and installation.
What is LY1-D20/1(S) used for?
LY1-D20/1(S) é utilizado para proteção contra surtos a jusante em quadros de subdistribuição e circuitos finais de equipamentos. Ajuda a limitar sobretensões transitórias antes que estas alcancem cargas elétricas e eletrônicas sensíveis.
Is LY1-D20/1(S) a Type 2 or Type 3 SPD?
The product page classifies LY1-D20/1(S) as Class II+III / Type 2+3, making it suitable for coordinated downstream and final-distribution surge protection.
Quais são as classificações de corrente de descarga que ele fornece?
It provides 10kA nominal discharge current In and 20kA maximum discharge current Imax, both based on an 8/20μs current waveform.
Quais opções de voltagem estão disponíveis?
Available maximum continuous operating voltage options are 75V, 150V, 275V, 320V, 385V, and 440V AC. The correct version must be selected according to the nominal system voltage.
Qual é o benefício do design plugável?
The replaceable cartridge allows the protection module to be inspected or replaced without removing the permanently wired base, simplifying maintenance.
O que deve ser confirmado antes de fazer o pedido?
Confirm the nominal system voltage, required Uc and Up level, single-pole protection arrangement, 125A maximum backup-fuse coordination, conductor size, DIN-rail space, and remote-contact requirement.
