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WNTSA100-4T 32A

The WNTSA100-4T is a 100A thermal overload relay that protects three-phase motors against overloads and phase failures. While its full adjustable range spans up to 100A, it can be set as low as 32A for applications requiring lower current protection. It features manual/auto reset, mechanical trip indication, and compatibility with TeSys D contactors.

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Specifications Parameter Specification Model WNTSA100-4T Current Setting Range 32 – 100 A Minimum Setting 32 A (within adjustable range) 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 Reset Manual / automatic (selectable) Standards IEC/EN 60947‑4‑1, UL 508, CSA Primary Applications Motor protection for pumps, fans, and compressors Conveyor systems and material handling Industrial machinery and process equipment HVAC and building automation systems