Overview
The Siemens 3UA58 00-2C is a thermal/solid-state overload relay engineered for motor circuit protection in industrial manufacturing and commercial applications. Rated for 16–25 amperes at 600VAC, this relay provides fast response and reliable 1NO/1NC switching to safeguard motors from overload conditions. The compact, durable design integrates seamlessly with Siemens World Series contactors and motor starters.
Key Features
- 16–25A current rating with adjustable setpoint for precise motor protection
- 600VAC voltage rating suitable for standard industrial power systems
- Solid-state overload detection with fast thermal response
- Manual reset button for operator control and diagnostic flexibility
- 1NO/1NC switching contacts for alarm and control feedback
- Pre-wired with terminals and connectors for rapid installation
Technical Specifications
- Overload Rating: 16–25A adjustable
- Voltage Rating: 600VAC
- Relay Type: Solid-state thermal overload
- Reset Type: Manual push-button
- Contact Configuration: 1NO/1NC
- Compatible Motor Starters: 3TF46, 3TF47, 3TF48, 3TF49
- Series: Siemens World Series 3UA
- Includes: Wiring connectors and terminals
Typical Applications
The 3UA58 00-2C is widely deployed in:
- Motor protection circuits in manufacturing equipment and production lines
- HVAC and process cooling systems requiring precise overload sensing
- Pump and fan motor control in industrial facilities
- Commercial building automation and motor control panels
- OEM equipment and retrofit motor starter assemblies
Compatibility & Replacements
This relay is a direct substitute for OEM Siemens 3UA58-00-2C units and is specifically engineered for use with Siemens World Series contactors (3TF46, 3TF47, 3TF48, 3TF49). Aftermarket equivalents such as the OR-3UA5800-2C are available from third-party suppliers but this genuine Siemens part ensures full compatibility and warranty support. The 3UA58 series includes various amperage ratings (e.g., 3UA58 00-2D for 25–40A, 3UA58 00-2E for 32–50A) to cover different motor protection ranges.
