HRN-54 is a voltage monitoring relay for 3-phase networks with adjustable levels, protecting equipment against over- and undervoltage and phase faults.
Key features
- Supply = monitored voltage: 3× 400 V, supplied from L1-L2-L3
- Adjustable upper level Umax 105 – 125 % Un and lower level Umin 75 – 95 % Un
- Monitors phase sequence and phase failure; below 60 % Un the output opens immediately
- Adjustable response delay 0.1 – 10 s
- Stays operational even if one phase fails
- Output: 1× changeover 8 A/AC1
- 1-module DIN rail housing, 90 × 17.6 × 64 mm
