🔹 Siemens Thermal Overload Relay – 3UA62305A (3UA Series, Variant A)
🔹 Product Description
The Siemens 3UA62305A is a thermal overload relay from the Siemens 3UA Series, designed for heavy-duty industrial motor protection. It provides reliable safeguarding of electric motors against overload, phase failure, and excessive temperature rise, ensuring long-term operational safety and equipment protection.
This A variant belongs to the 3UA6230 high-current frame range, typically used in large industrial motor applications such as MCC panels, heavy pumps, crushers, compressors, conveyors, and process industry machinery. It is especially suitable for CT-operated motor protection systems, where high current motors require external current sensing.
The relay works on a bimetal thermal principle with inverse time tripping characteristics, meaning the higher the overload, the faster the tripping response. This ensures precise and safe disconnection of the motor circuit during fault conditions.
🔹 Key Features
• Genuine Siemens 3UA Series thermal overload relay
• Model: 3UA62305A
• A variant for heavy-duty CT-operated systems
• Designed for high-current industrial motor protection
• Thermal bimetal overload protection technology
• Protection against overload and phase failure
• Suitable for MCC panels and large motor control systems
• Reliable inverse-time tripping characteristics
• High durability for continuous industrial operation
• Compatible with Siemens industrial automation systems
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3UA Series |
| Model Number | 3UA62305A |
| Product Type | Thermal Overload Relay (Heavy Duty) |
| Variant | A |
| Protection Type | Overload + Phase Failure Protection |
| Operating Principle | Bimetal Thermal Mechanism |
| Mounting Type | Panel / CT Operated System |
| Current Range | 95 – 150 A (typical 3UA6230 A variant range) |
| Application | Heavy Industrial Motor Protection |
| Brand | Siemens |
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