Overview
The Siemens 3UA58 00-2D is a solid-state overload relay engineered to provide precise motor protection within the 20 to 32 ampere range. This relay integrates seamlessly with Siemens World Series contactors and motor starters, making it an ideal replacement or upgrade component for industrial control systems. Built to IEC 947 and VDE 0660 standards, the 3UA58 00-2D delivers reliable overload protection in demanding factory environments.
Key Features
- Adjustable Amperage Range: Selectable settings between 20A and 32A for precise motor load matching
- Direct Mounting: Designed for seamless integration with Siemens 3TF46, 3TF47, 3TF48, and 3TF49 contactors
- Auxiliary Contacts: One normally open (1NO) and one normally closed (1NC) contact for control circuit integration
- Manual Reset: Manual reset button for straightforward recovery after a trip event
- Solid-State Construction: Reliable electronic protection logic without moving thermal elements
- Industrial Standards: Meets IEC 947 and VDE 0660 certification requirements
Technical Specifications
- Amperage Range: 20–32A (adjustable)
- Voltage Rating: 600V AC
- Insulation Level (Ui): 1000V
- Auxiliary Contacts: 1NO + 1NC (Class 10A)
- Tripping Current: 125% of dial setting
- Terminal Torque: 22–26.5 lb-in (2.5–3 Nm)
- Standards: IEC 947, VDE 0660
- Weight: Approximately 470 g
- Coordination Type 1: 160A Gg / 160A T (BS 88)
- Coordination Type 2: 63A Gg / 63A T (BS 88)
Typical Applications
The Siemens 3UA58 00-2D is well-suited for motor protection in manufacturing, process automation, pump control, compressor systems, and industrial machinery where continuous uptime is critical. Its solid-state design and wide adjustment range make it ideal for OEMs and field retrofit applications requiring a drop-in replacement for legacy thermal overload relays.
Compatibility & Replacements
This relay is a direct mounting fit for Siemens World Series contactors: 3TF46, 3TF47, 3TF48, and 3TF49. The 3UA58 00-2D is the solid-state equivalent for the 20–32A protection class and may serve as a replacement for corresponding thermal models in the 3UA58 series. Always verify motor current ratings and contactor compatibility before installation. Other amperage ranges in the 3UA58 series (such as 3UA58-00-2E for 25–40A and 3UA58-00-2T for 40–57A) are available for different motor sizes.
