Description
The Siemens 3UG5512-1AR20 is a three-phase voltage monitoring relay engineered to protect motors, compressors, and other critical HVAC and industrial equipment from potentially damaging electrical supply faults. Designed for use across a wide operating voltage range of 160 to 690V AC, this monitoring relay continuously supervises the supply network and responds rapidly to out-of-tolerance conditions.
Key Features
- Wide supply voltage monitoring range: 160–690V AC
- Three-phase voltage monitoring for comprehensive electrical protection
- Detects phase failure, phase asymmetry, and phase sequence faults
- Compact DIN rail mount design for easy panel installation
- Integrated output relay for direct control or alarm signaling
- LED status indication for quick fault diagnostics
- Adjustable response thresholds to suit application requirements
- Suitable for HVAC, refrigeration, and industrial motor protection applications
Product Specifications
- SKU: 3UG5512-1AR20
- Brand: Siemens
- Monitoring Type: Three-Phase Voltage
- Voltage Range: 160–690V AC
- Mounting: DIN Rail
- Output: Relay contact
Applications
- Three-phase motor and compressor protection in HVAC systems
- Commercial refrigeration equipment protection
- Industrial control panels requiring phase monitoring
- Building automation and electrical distribution systems
The Siemens 3UG5512-1AR20 delivers reliable, continuous monitoring to help prevent costly equipment damage and unplanned downtime. Its broad voltage compatibility makes it a versatile solution for a wide range of commercial and industrial HVAC installations.
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