EUROPA TR2-D Thermal Overload Relay, 5.5-8A

The EUROPA TR2-D Thermal Overload Relay is a critical component for safeguarding electric motors from damage due to excessive current or phase failure. It operates on a thermal principle, automatically disconnecting the circuit when it detects a sustained current draw beyond its adjustable setpoint, thereby preventing overheating and costly motor burnouts.

This relay is designed to meet a host of stringent international safety and performance standards, including IEC 60947-1, IEC 60947-4-1, NFC 63-650, VDE 0660, and BS 4941. Its robust construction offers an insulation voltage of 690V and an operational voltage of up to 600V, making it suitable for a wide range of industrial and commercial applications.

A key safety feature is its IP2x rating (to VDE 0106), which provides basic protection against finger contact with live parts. The unit also boasts impressive dielectric strength, withstanding 6kV at 50Hz per IEC 255-5 and offering a 6kV impulse withstand voltage as per IEC 801-5, ensuring reliable operation in electrically noisy environments.

Precision Protection & Features

• Adjustable Setting Range: The current trip setting is finely adjustable from 5.5A to 8A, allowing for precise matching to the motor's full-load current.
• Tripping Class 10: This classification indicates the relay's trip time under overload conditions, making it ideal for motors with standard starting characteristics.
• Phase Failure Sensitivity: It is sensitised to detect phase loss, initiating a trip when the current exceeds 25% above the nominal set current (In), protecting the motor from single-phasing damage.
• Defined Tripping Threshold: The relay has a precise tripping threshold factor of 1.14 ± 0.06In for consistent and reliable operation.
• High-Frequency Capability: It operates reliably within frequency limits of up to 400Hz.

With its compact dimensions and proven design, 5