The Siemens 3UG5514-1BR20 is a SIRIUS 3UG5 analog monitoring relay designed for phase failure, phase sequence, asymmetry, and undervoltage monitoring in 3-phase systems. It helps protect motors, compressors, pumps, and industrial equipment from incorrect phase conditions
Key Features
• Monitoring functions:
o Phase failure detection
o Phase sequence monitoring
o Phase asymmetry monitoring
o Undervoltage monitoring
• Voltage range: 3 × 160–690 V AC
• Frequency: 15–70 Hz
• Output contacts: 2 changeover contacts (DPDT)
• Mounting: DIN rail
• Terminal type: Screw terminal
• Protection class: IP20
• Compact size: 22.5 × 100 × 90 mm
Typical Applications
• Motor protection panels
• Pump control systems
• HVAC systems
• Compressors
• Conveyor systems
• Industrial automation panels
Technical Highlights
|
Parameter |
Specification |
|
Model |
3UG5514-1BR20 |
|
Series |
Siemens SIRIUS 3UG5 |
|
Monitoring Type |
Phase sequence / phase loss / asymmetry /
undervoltage |
|
Supply Voltage |
3 × 160–690 V AC |
|
Relay Contacts |
2CO (DPDT) |
|
Contact Rating |
250 V AC / 3 A |
|
Mounting |
DIN Rail |
|
Operating Temp |
-25°C to +60°C |
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