IST 20R 3P+N 20KA - Schneider - Products - Easy Semiconductor Technology (Hong Kong) Limited 易擇半導體科技(香港)有限公司

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IST 20R 3P+N 20KA

The Schneider IST 20R 3P+N 20KA is a Surge Protection Device (SPD) designed to protect electrical installations from transient overvoltage caused by lightning strikes or switching surges. It is a part of Schneider Electric’s IST series, providing reliable protection for 3-phase systems with neutral (3P+N).

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Parameters: Poles: 3P+N (3-phase + neutral configuration) Nominal Discharge Current (In): 20kA (maximum surge current it can handle without damage) Maximum Discharge Current (Imax): This value is typically higher than the nominal current, providing an extra level of protection during extreme surge events. Protection Class: Type 2 (secondary protection, often used in conjunction with primary protection devices in the system) Rated Voltage (Un): 230/400V AC (for standard 3-phase installations) Rated Frequency: 50/60Hz Response Time: < 25ns (fast response to transient surges) Voltage Protection Level (Up): Typically ≤ 1.5kV (the maximum voltage that will appear across the SPD during a surge) Max Continuous Operating Voltage (Uc): 275V (for AC systems) Temperature Range: -40°C to +80°C Mounting: DIN rail for easy integration into electrical distribution panels