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Circuit breakers
xEffect FRCdM Type AC, A, U and R residual current circuit breakers
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xEffect FRCdM Type AC, A, U and R residual current circuit breakers

This residual current circuit breaker is part of the xEffect series for industrial/commercial applications. The FRCdM meets the highest requirements for the protection of both people and equipment. The FRCdM Type A is designed for systems with alternating and pulsating direct currents.

Type A RCCBs will also operate correctly in the presence of smooth direct residual currents up to 6 mA.

xEffect FRCdM Type AC, A, U and R residual current circuit breakers
compliant to
IEC 61008
Tripping Current
all current sensitive
Mixed Frequencies
up to 50 kHz

Core features

  • Digital technology for maximum system availability
  • Real-time measurement of residual currents
  • Easy operation and refitting
  • For fault current/residual current protection and additional protection
  • LED monitoring
  • Line voltage-independent 
  • For fault current and additional protection with additional digital features
  • System monitoring: Preventive information/warning before the RCD trips due to leakage currents
    - Integrated auxiliary contact
    - Local indicators
  • A new level of accuracy >that minimises nuisance tripping
  • Comprehensive range of accessories
  • Contact position indicator
  • Fault current tripping indicator
  • Automatic re-setting possible
  • Transparent designation plate
  • Compatible with the other devices from the xEffect series, which can be connected by means of a standard busbar
  • Twin-purpose terminal (lift/open-mouthed) at top and bottom
  • Can be positioned on busbar at top or bottom
  • Free terminal space despite installed busbar
  • FRBmM-1N universal tripping signal switch (also suitable for FAZ) can be retrofitted
  • Z-HK auxiliary switch can be retrofitted
  • Contact position indicator red - green
  • Tripping indicator white - blue
  • Additional safety
    - Sealing option
    - Option to lock in ON or OFF position
  • Time-delayed types suitable for use with standard fluorescent lamps, with or without electronic ballast (30mA-RCD: 30 units per phase conductor, 100mARCD: 90 units per phase conductor)

xEffect Digital Switchgear

The digital RCCB from the xEffect series do more than just switch off. They monitor electrical installations and give advance warning of critical current flows. So plant / factory shutdowns – and the resulting costs – can be avoided.

Local indication
xEffect Residual Current Circuit Breaker FRCdM Type AC, A, U, R - green LED


Fault current < 30 %
Everything is ok.

If the current flow in the system to ground is in the ambit from 0 to 30 % of the nominal fault current, the green LED indicates the proper status.


Fault current 30-50 %
Check the connected devices.

The yellow LED shows a residual current in the ambit of 30 to 50 % of the nominal fault current. Before the system is shut down, professional countermeasures can be taken.

xEffect Residual Current Circuit Breaker FRCdM Type AC, A, U, R - red LED


Fault current > 50 %
Contact an electrican.

When the red LED lights up, the leakage current is already higher than 50 % of the nominal fault current. Therefore the system is in a critical status – the digital RCCB only trips when the fault current continues to increase.

Reliable protection for machines

These products provide an optimal system and additional protection against residual earth leakage currents for a wide range of applications by offering different tripping characteristics to cater for various electrical systems and components that can generate. Available in a comprehensive range of nominal current values and with optional accessories.

Digital RCD with enhanced reliability

Type -A: AC and pulsating DC current sensitive. Protects against special forms of residual pulsating DC which have not been smoothed.
Type AC: AC current sensitive
Type -U: Suitable for speed-controlled drives with frequency converters inhousehold, trade, and industry. Unwanted tripping is avoided thanks to a tripping characteristic designed particularly for frequency converters.
Type -R: To avoid unwanted tripping due to X-ray devices.
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