The WNTSA100-4T is a 100A thermal overload relay designed to protect three-phase motors against overload and phase failure. It offers adjustable current settings, manual/auto reset options, and is compatible with TeSys D contactors for industrial motor control applications.
Specifications
Parameter Specification
Model WNTSA100-4T
Current Setting Range 63 – 100 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 indicator
Reset Manual / automatic (selectable)
Standards IEC/EN 60947‑4‑1, UL 508, CSA
Protection Features Overload, phase unbalance, phase loss