🔹 Siemens Thermal Overload Relay – 3UA58002CZ1 (3UA Series, Variant CZ1)
🔹 Product Description
The Siemens 3UA58002CZ1 is a thermal overload relay from the Siemens 3UA Series, designed for reliable motor protection in industrial control systems. It is used to safeguard electric motors from overload, phase failure, and overheating conditions by disconnecting the circuit when abnormal current levels are detected.
This relay is typically mounted on compatible Siemens contactors (especially 3TF series) and is widely used in motor starter assemblies, industrial automation panels, pumps, compressors, and heavy-duty machinery.
The CZ1 variant belongs to the 3UA5800 frame range, which is known for medium-current motor protection applications and robust industrial performance.
🔹 Key Features
• Genuine Siemens 3UA Series thermal overload relay
• Model: 3UA58002CZ1
• CZ1 variant for contactor-mounted applications
• Thermal bimetallic protection technology
• Protects against overload and phase failure
• Suitable for industrial motor starter systems
• Adjustable current setting range (typically 16–25A or similar depending on configuration)
• High reliability and long service life
• Designed for Siemens 3TF contactor compatibility
• Manual/automatic reset functionality (variant dependent)
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3UA Series |
| Model Number | 3UA58002CZ1 |
| Product Type | Thermal Overload Relay |
| Variant | CZ1 |
| Protection Type | Overload + Phase Failure Protection |
| Operating Principle | Bimetal Thermal Mechanism |
| Mounting Type | Contactor Mounted |
| Current Range | ~16–25 A (typical for 3UA5800 frame) |
| Application | Motor Protection / Starter Panels |
| Brand | Siemens |
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