The WTSA630-4N2 A F is a 630A thermal overload relay from the TeSys A series, designed for heavy‑duty motor protection in high‑power industrial applications. It provides adjustable overload, phase‑unbalance, and phase‑loss protection, featuring manual/auto reset, mechanical trip indication, and compatibility with high‑current contactors.
Specifications
Parameter Specification
Model WTSA630‑4N2 A F
Current Setting Range 400 – 630 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 high‑current contactors
Primary Applications
Heavy‑duty motor protection (large pumps, compressors, fans)
High‑power conveyor and material‑handling systems
Industrial machinery and process equipment
HVAC and large building automation systems