3UA6230-5E | Thermal Overload Relay 250 – 400 A, Independent Mounting, Manual Reset – Siemens

The Siemens 3UA6230-5E is a high-performance thermal overload relay designed for motor protection in industrial applications. It is suitable for use with motors in the current range of 250 to 400 A, ensuring reliable operation and protection against overload conditions.

Key Features:

• Current Range: 250 – 400 A
• Mounting Type: Independent mounting for flexible installation
• Reset Type: Manual reset for controlled reactivation after tripping
• Protection Class: Provides reliable protection against motor overloads
• Compatibility: Designed to work seamlessly with Siemens contactors and motor starters
• Durability: Robust construction for long-lasting performance in demanding environments

Applications:

The 3UA6230-5E thermal overload relay is ideal for use in various industrial applications, including:

• Motor protection in manufacturing plants
• HVAC systems
• Pump and compressor systems
• Conveyor systems
• Other heavy-duty machinery requiring reliable overload protection

Technical Specifications:

• Rated Operational Current (Ie): 250 – 400 A
• Rated Insulation Voltage (Ui): 690 V
• Rated Operational Voltage (Ue): 690 V AC
• Ambient Temperature Range: -20°C to +60°C
• Standards Compliance: IEC/EN 60947-4-1, UL 508, CSA C22.2 No. 14

Benefits:

• Ensures safe and reliable motor operation by preventing damage due to overloads
• Manual reset feature allows for controlled restart after tripping
• Easy to install and integrate with existing Siemens motor control systems
• Durable design for use in harsh industrial environments