Thermal Overload Relay, 3UA Series, Variant FZ2 - 3UA58002FZ2

🔹 Siemens Thermal Overload Relay – 3UA58002FZ2 (3UA Series, Variant FZ2)

🔹 Product Description

The Siemens 3UA58002FZ2 is a thermal overload relay from the Siemens 3UA Series, designed to provide reliable motor protection against overload, phase failure, and overheating conditions. It ensures safe operation of industrial motors by disconnecting the circuit when excessive current causes thermal stress.

This FZ2 variant belongs to the 3UA5800 frame range, typically used for medium-to-higher current motor applications. It is commonly mounted with Siemens contactors (such as 3TF series) in motor starter assemblies used for pumps, compressors, conveyors, and other heavy-duty industrial equipment.

The relay operates on a bimetal thermal mechanism, where current-induced heat bends the bimetal strips, triggering a precise trip action that protects the motor and prevents equipment damage.

🔹 Key Features

• Genuine Siemens 3UA Series thermal overload relay
• Model: 3UA58002FZ2
• FZ2 variant for contactor-mounted motor protection systems
• Bimetal thermal overload protection technology
• Protection against overload and phase failure
• Suitable for industrial motor starter applications
• Adjustable current setting (typically higher mid-range of 3UA5800 series, approx. 32–50 A depending on configuration)
• High reliability and long service life
• Compatible with Siemens 3TF contactor systems
• Compact modular design for easy installation