Siemens SIRIUS Bimetal Relay – 4.0…6.3 A, Size S0, Class 10 – 3US5000-1G8K
The Siemens 3US5000-1G8K is a compact SIRIUS bimetal thermal overload relay designed for reliable motor protection in industrial control systems. It is used to protect motors against overload, phase failure, and excessive temperature rise by monitoring current and tripping within a defined time characteristic.
This relay belongs to Size S0 and is suitable for direct mounting with Siemens SIRIUS contactors. With an adjustable current range of 4.0 to 6.3 A and Class 10 tripping characteristic, it ensures fast and safe disconnection under overload conditions, making it ideal for pumps, conveyors, compressors, and general motor applications.
Key Features:
• Siemens SIRIUS bimetal overload relay
• Adjustable current range: 4.0…6.3 A
• Size S0 compact design
• Class 10 tripping characteristic (fast motor protection)
• Phase loss protection for motor safety
• Direct mounting with Siemens contactors
• Manual/automatic reset options (depending on configuration)
• Screw terminal connections for secure wiring
• Reliable thermal protection using bimetal technology
• Suitable for industrial motor starter applications
Technical Specifications
|
Parameter |
Specification |
|
Product Model |
3US5000-1G8K |
|
Brand |
Siemens |
|
Product Series |
SIRIUS 3US |
|
Product Type |
Bimetal Thermal Overload Relay |
|
Current Setting Range |
4.0 – 6.3 A |
|
Size |
S0 |
|
Tripping Class |
Class 10 |
|
Protection Function |
Overload + Phase failure protection |
|
Mounting Type |
Contactor mounting (SIRIUS system) |
|
Reset Type |
Manual / Auto (variant dependent) |
|
Connection Type |
Screw terminals |
|
Application |
Motor protection |
|
Operating Principle |
Thermal bimetal expansion |
|
Standards |
IEC 60947-4-1 |
|
Operating Temperature |
Industrial standard range |
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