🔹 Siemens Thermal Overload Relay – 3UA50000K (3UA Series, Variant K)
The Siemens 3UA50000K is a 3UA Series thermal overload relay designed to protect three-phase induction motors from overload, phase failure, and prolonged overcurrent conditions. It operates on a bimetallic thermal principle, where excess current heats the bimetal strip, causing it to bend and trip the relay, disconnecting the motor circuit to prevent damage.
This relay is typically used in combination with Siemens contactors as part of a motor starter assembly. It provides reliable and consistent protection against electrical faults, helping prevent motor overheating, insulation damage, and unexpected downtime in industrial operations.
The 3UA50000K is suitable for applications such as motor control centers (MCCs), industrial automation systems, pumps, compressors, conveyors, HVAC systems, machine tools, and general-purpose motor protection in manufacturing industries.
• Genuine Siemens 3UA Series thermal overload relay
• Model Number: 3UA50000K
• Bimetallic thermal overload protection
• Protection against overload and phase loss
• Trip-free mechanism for safety compliance
• Temperature compensated operation
• Suitable for three-phase motor protection
• Compact design for motor starter integration
• Reliable industrial-grade construction
• Long service life and consistent performance
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3UA Series |
| Model Number | 3UA50000K |
| Product Type | Thermal Overload Relay |
| Protection Type | Overload + Phase Failure Protection |
| Operating Principle | Bimetal Thermal Mechanism |
| Application | Motor Protection |
| Mounting Type | Contactor Mounted / Panel Mounted |
| Reset Type | Manual / Automatic (variant dependent) |
| Trip Class | Class 10A (typical for series) |
| Industry Use | Industrial Automation, MCCs, HVAC, Pumps |
| Brand | Siemens |
No reviews yet.