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WTSA320-4N2 A

The WTSA320‑4N2 A is a 320A thermal overload relay from the TeSys A series, designed for heavy‑duty motor protection in industrial applications. It provides adjustable overload, phase‑unbalance, and phase‑loss protection, with manual/auto reset options and a mechanical trip indicator.

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Specifications Parameter Specification Model WTSA320‑4N2 A Current Setting Range 200 – 320 A Rated Insulation Voltage (Ui) 690 V AC Rated Operational Voltage (Ue) 400 V AC Poles 3 poles Trip Class Class 10 Ambient Temperature Range –25 °C to +60 °C Mounting DIN‑rail or direct mounting Auxiliary Contacts 1 NO (97‑98) + 1 NC (95‑96) Trip Indication Mechanical flag (red) Reset Manual / automatic (selectable) Standards IEC/EN 60947‑4‑1, UL 508 Compatibility TeSys A/LV1 contactors Primary Applications Heavy‑duty motor protection (pumps, compressors, large fans) Conveyor and material‑handling systems Industrial machinery and process equipment HVAC and large building automation systems