The Siemens SIRIUS 3RU2136-4JB00-8K Thermal Overload Relay is designed to provide dependable thermal overload protection for three-phase motors. With an adjustable current range of 54–65 A, it safeguards motors against overload, phase failure, and excessive current, helping improve equipment reliability and extend motor life. This Size S2 relay features a Class 10 tripping characteristic, contactor mounting, screw-type terminals, and manual/automatic reset, making it ideal for industrial motor starter applications.
| Parameter | Specification |
|---|---|
| Brand | Siemens |
| Series | SIRIUS 3RU2 |
| Model Number | 3RU2136-4JB00-8K |
| Product Type | Thermal Overload Relay |
| Adjustable Current Range | 54–65 A |
| Tripping Class | Class 10 |
| Relay Size | S2 |
| Mounting Type | Contactor Mounting |
| Main Circuit Connection | Screw Terminal |
| Auxiliary Circuit Connection | Screw Terminal |
| Reset Type | Manual / Automatic |
| Rated Insulation Voltage | 690 V |
| Rated Surge Withstand Voltage | 6 kV |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -55°C to +80°C |
| Maximum Installation Altitude | 2000 m |
| Degree of Protection | IP20 |
| Approximate Weight | 0.344 kg |
| Application | Thermal Motor Overload Protection |
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