The Siemens SICOP 3UA5800-8YZ1 Thermal Overload Relay is designed to provide reliable overload and phase-failure protection for three-phase AC motors. Featuring an adjustable current setting range of 70–95 A and Class 10 tripping characteristics, this relay protects motors against overheating caused by overload conditions while ensuring dependable operation. It is designed for use with compatible Siemens 3TF46/47 contactors and offers manual and automatic reset functionality, making it suitable for industrial motor control, automation, and power distribution applications.
| Parameter | Specification |
|---|---|
| Brand | Siemens |
| Series | SICOP 3UA |
| Model Number | 3UA5800-8YZ1 |
| Product Type | Thermal Overload Relay |
| Current Setting Range | 70–95 A |
| Trip Class | Class 10 |
| Motor Protection | Overload & Phase Failure |
| Auxiliary Contacts | 1 NO + 1 NC |
| Reset Function | Manual / Automatic |
| Mounting | Direct mounting on compatible contactor |
| Compatible Contactors | Siemens 3TF46 / 3TF47 |
| Rated Insulation Voltage (Ui) | 690 V |
| Rated Frequency | 50/60 Hz |
| Connection Type | Screw Terminal |
| Ambient Operating Temperature | -25°C to +55°C |
| Standards | IEC 60947-4-1 |
| Application | Thermal overload protection for AC motors |
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