HRN-57 | Relay for protecting over/under voltage in 3-phase mains

• serves for protecting the voltage in the switchboard (protection of devices and equipment)
• It monitors the value of voltage in 3-phase main.
• the relay does not monitor the phase sequence
• It is possible to set the upper and lower level independently.
• Adjustable time delay eliminated short voltage peaks and failures in the main.
• The device is supplied from monitored voltage.
• The faulty state is indicated by a red LED and by breaking output relay contact.
• Output contact 1x switch / SPDT 8A / 250V AC1.
• if the supply voltage drops below 60% Un (UOFF lower level), the relay opens immediately without any delay
• HRN-57: supply from all phases, means that relay is functional also in case of failure in one phase.
• HRN-57N: supply L1, L2, L3-N, means that relay monitors also a failure of the neutral wire.
• 1-MODULE, DIN rail mounting

More information

• Monitoring terminals: L1, L2, L3
• Supply and monitored voltage Un: 3x 400V / 50-60Hz
• Max. continuous voltage: AC 3x 460V
• Number of contacts: 1x switch (AgNi)
• Operating temperature: -20°C to 55°C
• Operating position: any
• Mounting: DIN rail EN 60715
• Protection degree: IP40 from front panel / IP10 terminals
• Dimensions: 90 x 17.6 x 64mm
• Weight: 68g