Siemens SIRIUS Bimetal Relay – 25…36 A, Size S2, Class 10 – 3US5600-2Q8K
The Siemens 3US5600-2Q8K is a SIRIUS thermal overload relay (bimetal type) designed for reliable motor protection in industrial applications. It protects three-phase motors against overload, phase failure, and excessive heating, ensuring safe and stable operation of electrical systems.
This relay belongs to Size S2 and offers an adjustable current range of 25 to 36 A, making it suitable for medium to heavy-duty motor loads. With a Class 10 tripping characteristic, it provides fast disconnection during overload conditions, helping prevent motor winding damage and improving overall system reliability.
It is designed for direct mounting with Siemens SIRIUS contactors, making it ideal for use in motor starter panels, MCCs, pumps, compressors, conveyors, and industrial automation systems.
Key Features:
• Siemens SIRIUS bimetal thermal overload relay
• Adjustable current range: 25 – 36 A
• Size S2 robust industrial design
• Class 10 tripping characteristic (fast motor protection)
• Phase failure protection for motor safety
• Direct contactor mounting (SIRIUS system)
• Manual/automatic reset (variant dependent)
• Screw terminal connection for secure wiring
• Proven thermal bimetal sensing technology
• Suitable for heavy-duty industrial motor applications
Technical Specifications
|
Parameter |
Specification |
|
Product Model |
3US5600-2Q8K |
|
Brand |
Siemens |
|
Series |
SIRIUS 3US |
|
Type |
Thermal Overload Relay (Bimetal) |
|
Current Range |
25 – 36 A |
|
Size |
S2 |
|
Tripping Class |
Class 10 |
|
Protection Functions |
Overload + Phase failure protection |
|
Mounting Type |
Contactor mounting (SIRIUS system) |
|
Reset Type |
Manual / Automatic (variant dependent) |
|
Connection Type |
Screw terminals |
|
Application |
Motor protection |
|
Operating Principle |
Thermal bimetal expansion |
|
Standards |
IEC 60947-4-1 |
|
Product Status |
Active |
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