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FATECH ELECTRONIC (FOSHAN) CO., LTD
FATECH surge arrester FV20C/3+NPE-385 for ac power supply

FATECH surge arrester FV20C/3+NPE-385 for ac power supply

Product catalog summary

Specifications:
The document outlines the specifications for a remote control contact used in surge protective devices for low-voltage power systems. It details the range of signal access and recommended wire specifications for both AC and DC systems. For AC, the maximum voltage is 250V with a current of 0.5A, using single-core wire up to 1.5mm. For DC, the maximum voltage is 60V with a current of 0.1A, using multi-core wire up to 1.3mm. If the model number lacks an 'S', it does not include the remote control contact function.

Components and Features:
The device consists of a base part and pluggable protection modules (MOV + GDT). It is designed for use in lightning protection zones at boundary 1-2. The core components are metal oxide varistor components with high discharge capacity, offering low residual voltage and quick response. It includes a reliable control mechanism with a Thermo Dynamic Control disconnector and a remote signaling contact for control devices. Fault indication is provided via a red mark in the inspection window. The protection mode covers L1, L2, L3-N, N-PE.

Model Variants:
The document lists several model numbers: FV20C/3+NPE-150(S), FV20C/3+NPE-275(S), FV20C/3+NPE-320(S), FV20C/3+NPE-385(S), and FV20C/3+NPE-440(S). Each model has different nominal and rated voltages, with a maximum discharge current of 40kA and a nominal discharge current of 20kA. The voltage protective level varies across models, with response times of ≤25ns for L-N and ≤100ns for N-PE.

Installation and Operation:
Recommended back-up fuse is 125A, with isolation resistance greater than 10 MΩ. I/O connections use multi-core wire ranging from 4mm to 25mm. The device mounts on a 35mm symmetrical rail (EN50022/DIN46277-3). It operates within a temperature range of -40℃ to +80℃, humidity of 30% to 90%, and altitude up to 3000m. The degree of protection is IP20, with housing material rated UL94 V-0. A mechanical indicator shows the disconnection status (Green: OK, Red: replace). Remote control contact is optional.

Catalog excerpts

FATECH surge arrester FV20C/3+NPE-385 for ac power supply-1

Surge Protective Device for Low-voltage Power System ♦ Consisting of a base part and MOV + GDT pluggable protection modules. ♦ For using in the lightning protection zones concept at boundary 1-2. ♦ The core parts are metal oxide vristor components with high discharge capacity. ♦ Low residual voltage and quick response. ♦ Reliable control thanks to Thermo Dynamic Control disconnector. ♦ With remote signaling contact for control device. ♦ Fault indication via red mark in the inspection window. ♦ Protection mode: L1,L2,L3-N,N-PE. Remark: if the model number is without“S”, the model is without remote control contact function

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