The 3UG4513-1BR20 is a reliable 3-phase line monitoring relay from Siemens that ensures safe operation by detecting phase imbalance (≥20%), phase failure, and incorrect phase sequence. Ideal for industrial motor protection with adjustable off-delay timing.
Phase imbalance detection: ≥20%
Monitors phase loss, sequence, and asymmetry
Adjustable off-delay: 0.1 – 20 seconds
Output Contact: 1 CO (Changeover Contact)
Operating voltage range: 160–690V AC
DIN rail mounting
LED status indicators
Compact, panel-friendly design