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Geyer Three-phase Voltage Monitor HRN-57
Voltage Monitors

Geyer Three-phase Voltage Monitor HRN-57

The Geyer HRN-57 three-phase voltage monitor checks the voltage in a 3x400 V network and protects against overvoltage, undervoltage, and phase failure. The upper and lower limits can be adjusted...

The Geyer HRN-57 three-phase voltage monitor checks the voltage in a 3x400 V network and protects against overvoltage, undervoltage, and phase failure. The upper and lower limits can be adjusted independently, as can the response time.

The LED indicators show operating status and faults. If the voltage drops by up to 60%, it switches off automatically.

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  • Protection Type

    Overvoltage

    Monitors current consumption in Amperes (A). If the connected devices draw more current than the safety limit, the monitor cuts off the supply to prevent overheating of the cables and the risk of fire.

    Undervoltage

    Protects against dangerous voltage drops (e.g. < 190V). It is essential for devices with motors and compressors (air conditioners, refrigerators, pumps), which overheat and are damaged when they try to operate at low voltage.

    Phase Sequence

    Ensures that the phases are connected in the correct sequence (L1, L2, L3). Prevents three-phase motors and pumps from rotating in reverse, avoiding serious mechanical damage.
47 99 €
Delivery Wed, 18 Nov - Fri, 20 Nov
14,00 €   shipping cost
Sent from Greece
From Papantoniou 4.6 (32)
4.6 (32 reviews)
Greece
1 piece
See Electrical Panel Supplies on the page of Papantoniou

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Description & Specifications

The Geyer HRN-57 three-phase voltage monitor checks the voltage in a 3x400 V network and protects against overvoltage, undervoltage, and phase failure. The upper and lower limits can be adjusted independently, as can the response time.

The LED indicators show operating status and faults. If the voltage drops by up to 60%, it switches off automatically.

  • Type: Three-phase
  • Mounting: DIN rail
  • Contacts: 1
  • Positions: 1
  • Power supply: Mains-powered
  • Mains voltage: 3x400 V
  • Monitored voltage range: 300–380 V
  • Protection: Overvoltage, undervoltage, and phase failure
  • Limit adjustment: Independent adjustment of upper and lower limits
  • Indicators: Operating and fault LEDs

Manufacturer

Manufacturer Details

Warnings & Safety Information
Placement
Rail
Type
Three-phase
Digital
No
Protection Type
Overvoltage, Undervoltage, Phase Sequence

Protection Type

Overvoltage

Monitors current consumption in Amperes (A). If the connected devices draw more current than the safety limit, the monitor cuts off the supply to prevent overheating of the cables and the risk of fire.

Undervoltage

Protects against dangerous voltage drops (e.g. < 190V). It is essential for devices with motors and compressors (air conditioners, refrigerators, pumps), which overheat and are damaged when they try to operate at low voltage.

Phase Sequence

Ensures that the phases are connected in the correct sequence (L1, L2, L3). Prevents three-phase motors and pumps from rotating in reverse, avoiding serious mechanical damage.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

47,99 €
14,00 €   shipping cost