Siemens 3UA5500-1E Overload Relay
The Siemens 3UA5500-1E is a thermal delayed overload relay designed to provide reliable protection for electrical motors and machinery operating within a current range of 2.5 to 4 amperes. This relay is engineered to safeguard equipment against overload conditions, ensuring operational safety and longevity.
Key Features
- Current Range: Adjustable setting from 2.5 to 4A, accommodating various motor requirements.
- Compatibility: Specifically designed for seamless integration with Siemens 3TF44 and 3TF45 contactors, facilitating straightforward installation.
- Protection Mechanism: Offers accurate and reliable protection against overloads, adhering to CLASS 10A standards.
- Phase Failure Protection: Equipped with phase failure protection to prevent damage due to single phasing or unbalanced voltages.
- Reset Options: Features a selector switch for manual or automatic reset, providing flexibility in operation.
- Indicators: Includes a trip indicator (green) and a test button (red) for easy monitoring and testing of the relay’s functionality.
Technical Specifications
- Rated Insulation Voltage (Ui): 690V
- Rated Impulse Withstand Voltage (Uimp): 6kV
- Permissible Service Temperature: -25°C to +55°C
- Mounting: Direct mounting onto 3TF44/45 contactors
- Conductor Cross-Section: Solid or stranded: 2.5 to 6 mm²; Finely stranded with end sleeve: 1.5 to 4 mm²
The Siemens 3UA5500-1E overload relay is an essential component for protecting motors and machinery from potential damage caused by overload conditions, ensuring efficient and safe operation in industrial applications.
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