Siemens SIRIUS Bimetal Relay – 12.5…18 A, Size S0, Class 10 – 3US5000-2B8K
The Siemens 3US5000-2B8K is a SIRIUS bimetal thermal overload relay designed for reliable motor protection in industrial applications. It protects motors against overload, phase failure, and excessive temperature rise by monitoring current and tripping according to a defined thermal characteristic.
This relay belongs to Size S0 and offers an adjustable current range of 12.5 to 18 A, making it suitable for medium-sized motor applications. With a Class 10 tripping characteristic, it ensures fast disconnection during overload conditions, helping prevent motor damage and improving system reliability.
It is designed for direct mounting with Siemens SIRIUS contactors, making it ideal for motor starter assemblies used in pumps, compressors, conveyors, HVAC systems, and industrial automation panels.
Key Features:
• Siemens SIRIUS bimetal thermal overload relay
• Adjustable current range: 12.5 – 18 A
• Size S0 compact design
• Class 10 tripping characteristic for fast protection
• Phase loss protection for motor safety
• Direct mounting with SIRIUS contactors
• Manual/automatic reset options (variant dependent)
• Screw terminal connection for secure wiring
• Proven bimetal thermal sensing technology
• Suitable for industrial motor protection systems
Technical Specifications
|
Parameter |
Specification |
|
Product Model |
3US5000-2B8K |
|
Brand |
Siemens |
|
Series |
SIRIUS 3US |
|
Type |
Thermal Overload Relay (Bimetal) |
|
Current Range |
12.5 – 18 A |
|
Size |
S0 |
|
Tripping Class |
Class 10 |
|
Protection Functions |
Overload + Phase failure protection |
|
Mounting Type |
Contactor mounting (SIRIUS system) |
|
Reset Type |
Manual / Automatic (depending on
configuration) |
|
Connection Type |
Screw terminals |
|
Application |
Motor protection |
|
Operating Principle |
Thermal bimetal expansion |
|
Standards |
IEC 60947-4-1 |
|
Product Status |
Active |
No reviews yet.