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- FATECH surge arrester FV50B/4-320S for class 1 AC protection
FATECH surge arrester FV50B/4-320S for class 1 AC protection
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FATECH surge arrester FV50B/4-320S for class 1 AC protection
Product catalog summary
Product Overview: The FV50B/4 is a surge protective device designed with a unique seal construction featuring a multilayer spark gap, ensuring no spark emission outside the housing. It includes a working status indication window and optional remote control contacts.
Specifications: The device offers a maximum continuous operating voltage (Uc) range from 150V to 385V, suitable for various applications. It is primarily used in lightning protection zones (LPZ) 0 to 1 and is widely applicable in building entrance lines, elevators, and mineral industries. The device is designed for a 3-phase, 4-pole system.
Remote Control Contact: The port definition for remote control contact includes AC and DC signal access with specific voltage and current limits. Recommended wire specifications are provided for both single-core and multi-core wires.
Model Variants: The FV50B/4 series includes models with different voltage ratings: 150V, 255V, 275V, 320V, and 385V. Models without the 'S' designation do not include remote control contact functionality.
Technical Details: The device is tested under IEC/EN/VDE Class I/B standards and supports TT and TN network types. It offers protection modes for L1, L2, L3, and N-PE. The nominal voltage is 110/220V~ or 220/380V~, with a rated voltage matching the maximum continuous operating voltage. It can handle an impulse current of 50kA and a nominal discharge current of 50kA, with a voltage protective level of ≤1.8kV to ≤2.0kV and a response time of ≤100ns.
Installation and Operation: Recommended back-up fuse is 500A, with isolation resistance greater than 10 MΩ. I/O connections require multi-core wires of specified sizes. The device is mounted on a 35mm symmetrical rail (EN50022/DIN46277-3) and operates within a temperature range of -40℃ to +80℃, humidity of 30% to 90%, and altitude up to 3000m. It has a protection degree of IP20 and is made from UL94 V-0 housing material.
Additional Features: The device includes a mechanical disconnection indicator (green for OK, red for replacement) and optional remote control contact.
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Catalog excerpts
Surge Protective Device for Low-voltage Power System ♦ Adopt unique designed seal construction with multilayer spark gap, no spark emission outside the housing. ♦ With working status indication window, and remote control contacts. ♦ Max.continuos operating voltage(Uc)150V~,255V~, 275V~,320V~,385V~for your option. ♦ Mainly used in lightning protection zone (LPZ) 0 to 1, widely used in building entrance lines elevator, mineral, and so on. ♦ 3 phase,4 poles. Remark: if the model number is without“S”, the model is without remote control contact function
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