3UG4825-2CA40 SIEMENS

The 3UG4825-2CA40 is a digital monitoring relay designed for precise residual current monitoring, ensuring electrical safety and preventing equipment damage. It operates in conjunction with the 3UL23 residual-current transformer, enabling accurate detection of leakage currents. This relay offers a wide setting range from 0.03 A to 40 A, allowing for flexible adaptation to various application requirements. Separate settings for warning threshold and switch-off value provide tiered protection, enabling early detection of potential issues. Adjustable ON delay and tripping delay, ranging from 0 to 999.9 seconds, prevent nuisance tripping and allow for coordination with other protective devices. The shutdown hysteresis is adjustable up to 50%, while the warning hysteresis is fixed at 5%, optimizing sensitivity and stability. With a narrow width of 22.5mm, it saves valuable space in control panels. It features two change-over contacts and offers the option of a fault buffer for comprehensive fault analysis. The spring-type connection system ensures reliable and vibration-resistant connections.