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The RC48N ground-fault neutral-grounding monitor is used to monitor high-resistance grounded installations. The maximum ground fault current in these systems is limited by a neutral grounding resistor to 5 A, 15 A or 25 A .

The RC48N ground-fault neutral-grounding monitor combines three functions in one device:

1. Monitoring of the residual current in the grounding conductor.

2. Voltage monitoring between the transformer neutral and ground.

3. Monitoring of the grounding resistor for continuity (NGR).

If a value is not within the thresholds, a relay with two voltage-free changeover contacts will be activated.

  • Caractéristiques
  • Applications
  • Accessoires
  • Références de commande
  • Téléchargements
  • Ground-fault monitor for high-resistance grounded installations with a limited fault current of 5 - 25 A
  • Three-in-one functionality: Residual current, voltage and grounding resistor continuity
  • Measures the residual current by means of a Bender residual current transformer
  • Alarm easily recognizable by LED lights
  • Alarm relay with adjustable trip time
  • Measures resistance value and voltage drop of the NGR via coupling devices
  • Alarm easily recognizable by LED lights
  • The alarm relay can be used for the tripping of a load switch
  • Depending on the type of load switch the operating mode of the alarm relay can be set to N/O operation or N/C operation
  • High-resistance grounded installations with a limited fault current of 5 - 25 A
  • Mining applications


Accessoires nécessaires pour RC48N

Type designationArt.-No.
CD1000 Coupling device, AC 0 - 1000 VB98039010
CD5000 Coupling device, AC 0 - 5000 VB98039011
Remote alarm indicator and operator panelB94071001
Residual current transformer, 70 mmB911777
Residual current transformer, 105 mmB911778

Variantes du RC48N

Basic deviceSupply voltage/
frequency range US
Power consumptionArt. No.
Ground-fault neutral-grounding monitor RC48N-935AC/DC 60 ... 264 V
50 ... 60 Hz
approx. 5.8 VA at AC 60 V
approx. 8.5 VA at AC 264 V

Téléchargements pour RC48N



Catégorie Produit Langue Taille Téléchargement