Des technologies innovantes pour une utilisation sûre du courant électrique à des fins de haute disponibilité

Les produits Bender sont utilisés dans le monde entier et sont connus depuis plus de 65 ans.

Nous vous offrons une qualité et une sécurité de premier ordre, associées à un service d'envergure mondiale et 
à une assistance maximale pour résoudre vos problèmes de surveillance.

  • Sécurité électrique pour alimentations électriques non mises à la terre (réseaux IT)
  • Contrôleurs permanents d'isolement, dispositifs de localisation de défaut d'isolement 
  • Alimentations électriques dans les locaux à usage médical
  • Relais de mesure et de surveillance
  • Sécurité électrique pour alimentations mises à la terre (réseaux TN)
  • Utilisation efficiente des énergies renouvelables, énergie éolienne, photovoltaïque
  • Système de contrôle pour les équipements électriques et les appareils techniques médicaux

benvac® RCMB121

To satisfy new standards including IEC 62752 and IEC 60364-7-722, the charging of electrical vehicles requires residual current sensors to avoid hazardous situations in cases where the vehicle battery (DC) is connected to the home power supply (AC). Generally, AC/DC sensitive residual current sensors can be used where direct current and alternating current circuits are directly connected and therefore AC/DC leakage currents can occur.

Typically type A residual current circuit breakers (RCCBs) are installed in private households. However, these RCCBs are to identify and deactivate DC fault currents. In order to charge an electric vehicle (EV) from a home power supply, a costly type B RCCB would be required to guarantee safety in the event of a DC fault current. By using the benvac DI sensor in an IC-CPD or a wall box, the requirements for electrical safety and all-current fault detection can be fulfilled by the patented measuring method and this at a significantly reduced cost than comparable type B RCCB.

A single DI sensor simultaneously monitors all currents in phases and neutral conductors sensing AC/DC fault currents. The sensors can activate automatic shut-off in the event of hazardous electrical faults. As the residual currents to be monitored only occur in the event of electrical faults and are extremely low (mA), maximum measurement precision is critical. In addition, a fast response time is required to maintain safety features.


  • Protects against hazardous situations with fault currents, preserving RCCB type A from saturation
  • Small volume and footprint for integration into compact IC-CPD
  • Robust mechanical and electrical design suitable for harsh environmental conditions
  • Electrical safety at low cost (compared to RCCB type B)
  • Integrated self-monitoring and test functions
  • Compliant with standard IEC 62752 and UL 2231
  • Patented measurement technology (Patents: EP 2 571 128 / US 9,397,494 / ZL 201210157968.6 / CN 103001175, EP 2 813 856)


Charging mode 2

  • IC-CPD in charging cables for electric vehicles (EV) and plug-in hybrid electric vehicles (PHEV)

Charging mode 3

  • Wallboxes for charging EV and PHEV
  • Charging piles for charging EV and PHEV

benvac® RCMB121 Variante(s)

VersionType VACType BenderArt. No.
6 mA DC/30 mA r.m.sT60404-N4641-X900RCMB121-1B94042490
5 mA r.m.s./20 mA T60404-N4641-X901RCMB121-2B94042491

Téléchargements pour benvac® RCMB121

Notices RCMB121-1 786.9 Ko EN2021/10/20 12:52:0520.10.2021 12:52:05
Notices RCMB121-2 1.0 Mo EN2021/10/20 12:52:0720.10.2021 12:52:07