🔹 Siemens Thermal Overload Relay – 3UA58305C (3UA Series, Variant C)
🔹 Product Description
The Siemens 3UA58305C is a thermal overload relay from the Siemens 3UA Series, designed for reliable protection of electric motors in industrial medium-to-heavy duty applications. It protects motors from overload, phase failure, and overheating, ensuring safe and uninterrupted operation of electrical systems.
This C variant belongs to the 3UA5830 frame range, commonly used in industrial motor control centers (MCC panels) and heavy-duty motor starter assemblies. It is suitable for applications where motors operate under continuous load conditions such as pumps, compressors, conveyors, and industrial automation systems.
The relay operates on a bimetal thermal principle, where excess current produces heat that bends the bimetal strips, triggering a precise trip mechanism. This helps prevent motor burnout and equipment failure.
🔹 Key Features
• Genuine Siemens 3UA Series thermal overload relay
• Model: 3UA58305C
• C variant for industrial motor protection systems
• Bimetal thermal overload protection technology
• Protection against overload and phase failure
• Suitable for MCC panels and motor starter assemblies
• Designed for medium-to-high current applications
• Reliable inverse time tripping characteristics
• High durability and long service life
• Compact modular design for easy installation
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3UA Series |
| Model Number | 3UA58305C |
| Product Type | Thermal Overload Relay |
| Variant | C |
| Protection Type | Overload + Phase Failure Protection |
| Operating Principle | Bimetal Thermal Mechanism |
| Mounting Type | Panel / Motor Starter System |
| Current Range | ~32 – 50 A (typical 3UA5830 C variant range) |
| Application | Motor Protection / Industrial Control Panels |
| Brand | Siemens |
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