Thermal Overload Relay, 3UA Series, Variant A - 3UA50001A

🔹 Siemens Thermal Overload Relay – 3UA50001A (3UA Series, Variant A)

🔹 Product Description

The Siemens 3UA50001A is a thermal overload relay from the 3UA series designed to protect three-phase induction motors against 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 a trip, thereby disconnecting the motor circuit to prevent damage.

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

The 3UA50001A is suitable for use in motor control centers (MCCs), industrial automation systems, pumps, compressors, conveyors, HVAC systems, machine tools, and general industrial motor applications.

🔹 Key Features

• Genuine Siemens 3UA Series thermal overload relay
• Model Number: 3UA50001A
• Bimetallic overload protection system
• Protection against overload and phase failure
• Trip-free mechanism for safety compliance
• Temperature compensated operation
• Suitable for three-phase motor protection
• Compact design for contactor-based starters
• Reliable industrial-grade performance
• Long service life and stable operation