LRD04

The LRD04 model from Schneider Electric's TeSys series functions as a thermal overload relay, providing essential protection for electrical circuits. This relay supports a network frequency of 0 to 400 Hz, catering to varying operational requirements. It can manage a permissible current of 3A at a voltage of 120 V AC and is rated for operational voltages up to 690 V AC.

With a rated impulse withstand voltage of 6 kV, this device ensures durability under electrical stress. Phase failure sensitivity is an important feature, as it trips at a current level of 130% of lr when two phases are active, leaving the last phase unaffected. Temperature compensation mechanisms allow the relay to handle temperature fluctuations from -20 to 60 degrees Celsius effectively.

For installation, the tightening torque required is 1.7 Nm, providing reliable connections. Weighing in at 0.124 kg, the relay is lightweight yet robust enough for industrial applications. It maintains a dielectric strength of 1.89 kV at 50 Hz, indicating good insulation against electrical disturbances. This relay also operates efficiently with a maximum allowable humidity of 80% in both operational and storage conditions, provided there is no condensation. Furthermore, it can function optimally at altitudes up to 1000 meters above sea level, expanding its usability in various environments.