Thermal Overload Relay, 3UA Series, Variant D - 3UA52001D

🔹 Siemens Thermal Overload Relay – 3UA52001D (3UA Series, Variant D)

🔹 Product Description

The Siemens 3UA52001D is a thermal overload relay from the 3UA Series designed to protect three-phase induction motors from overload, phase failure, and prolonged overcurrent conditions. It operates using a bimetallic thermal mechanism, where excessive current heats the bimetal strip, causing it to bend and trigger the trip mechanism, disconnecting the motor from the supply to prevent damage.

This relay is commonly used with Siemens contactors in motor starter assemblies, providing reliable and cost-effective motor protection in industrial environments. It helps prevent overheating, insulation damage, and unexpected motor failure caused by electrical faults.

The 3UA52001D 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 systems in manufacturing industries.

🔹 Key Features

• Genuine Siemens 3UA Series thermal overload relay
• Model Number: 3UA52001D
• Bimetallic overload protection system
• Protection against overload and phase failure
• Trip-free safety mechanism for reliable operation
• Temperature compensated design for stable performance
• Suitable for three-phase motor protection
• Compact design for contactor-based starters
• Durable industrial-grade construction
• Long service life with consistent performance