Siemens 3UG4512-1AR20 Phase Monitoring Relay
Siemens 3UG4512-1AR20 Phase Monitoring Relay
Product Description :
- It is an essential electrical device designed to monitor and protect three-phase systems from issues such as phase failure, phase sequence errors, phase unbalance, and undervoltage/overvoltage conditions. It ensures the proper functioning of equipment by continuously checking the status of the three-phase power supply.
- It Identifies the absence of one or more phases in a three-phase system. Ensures the correct sequence (order) of phases for proper motor rotation.
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A Phase Monitoring Relay is a protective control device designed to monitor the health of three-phase power systems. It continuously checks for phase loss, phase reversal, undervoltage, overvoltage, and phase imbalance, ensuring the safe operation of motors, pumps, compressors, and other critical equipment.
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These relays prevent damage caused by power anomalies by providing automatic shutdown or alarm signaling when a fault is detected. Housed in compact enclosures with DIN rail or panel mounting options, they are essential in industrial automation, HVAC systems, and electrical distribution panels.
Product Specification :
- surge voltage resistance rated value – 6 kV
- shock resistance according to IEC 60068-2-27 – sinusoidal half-wave 15g / 11 ms
- vibration resistance according to IEC 60068-2-6 – 1 … 6 Hz: 15 mm, 6 … 500 Hz: 2g
- mechanical service life (operating cycles) typical -10 000 000
- electrical endurance (operating cycles) at AC-15 at 230 V typical -100 000
- thermal current of the switching element with contacts maximum -5 A
- reference code according to IEC 81346-2 -K
- relative repeat accuracy -1 %
