🔹 Siemens Thermal Overload Relay – 3UA62305C (3UA Series, Variant C)
🔹 Product Description
The Siemens 3UA62305C is a thermal overload relay from the Siemens 3UA Series, designed for high-current motor protection applications. It is typically used in industrial power systems where motors require protection against overload, phase failure, and excessive heating.
This C variant belongs to the 3UA6200 / 3UA6230 frame range, which is commonly used for heavy-duty and high-load motors. Unlike standard contactor-mounted relays, this model is often used with current transformer (CT) operated systems, making it suitable for large industrial motors.
The relay ensures safe operation by continuously monitoring motor current and tripping the circuit when abnormal conditions persist, preventing damage to expensive industrial equipment.
🔹 Key Features
• Genuine Siemens 3UA Series overload relay
• Model: 3UA62305C
• C variant (CT-operated heavy-duty type)
• Designed for high-current motor protection systems
• Thermal bimetal protection with CT input compatibility
• Protection against overload and phase failure
• Suitable for large industrial motors and heavy machinery
• Reliable tripping characteristics for continuous duty systems
• High durability for industrial environments
• Used in motor control centers (MCC panels)
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3UA Series |
| Model Number | 3UA62305C |
| Product Type | Thermal Overload Relay (CT Operated) |
| Variant | C |
| Protection Type | Overload + Phase Failure Protection |
| Operating Principle | Bimetal Thermal + CT Sensing |
| Mounting Type | Panel / Industrial Mounting |
| Current Range | 160 – 250 A (typical for this frame) |
| Application | Heavy Industrial Motor Protection |
| Brand | Siemens |
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