SIRIUS Residual Current Monitoring Relay for Electrical Safety and Fault Detection – 3UG5642-1CW30

🔹 Siemens SIRIUS Residual Current Monitoring Relay – 3UG5642-1CW30 (Electrical Safety & Leakage Detection)

🔹 Product Description

The Siemens 3UG5642-1CW30 is a multi-function SIRIUS 3UG5 monitoring relay designed for advanced electrical safety and system protection. It monitors residual current (earth leakage), load current, active power, voltage, and power factor (cos φ) to ensure safe and efficient operation of industrial electrical systems.

This relay is mainly used in industrial automation, MCC panels, pumps, motors, HVAC systems, and process industries, where early detection of electrical faults is critical. It helps prevent electric shock hazards, insulation failure damage, and unexpected system downtime by continuously analyzing electrical parameters.

Unlike basic protection relays, this model provides multi-parameter monitoring, allowing users to detect issues like leakage current increase, motor dry run, overload conditions, or inefficient power usage in real time.

It belongs to the Siemens SIRIUS 3UG5 series, which is designed for modern digital monitoring of electrical networks with high accuracy and flexible configuration.

🔹 Key Features

• Genuine Siemens SIRIUS 3UG5 monitoring relay
• Model: 3UG5642-1CW30
• Residual current (leakage) monitoring capability
• Monitors current, voltage, active power & cos φ
• Detects insulation faults and abnormal leakage conditions
• Adjustable delay and threshold settings
• Wide supply voltage range: 24–240V AC/DC
• DIN rail mounting (compact industrial design)
• High precision digital measurement system
• Suitable for industrial safety and predictive maintenance