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This FRCdM fulfills the highest requirements for the protection of both people and equipment. The RCCB Types B, B+ and Bfq detect AC pulsating DC residual currents and smooth DC residual currents.

The RCCB Type B is the standard type and sensitive to all residual currents up to 1 kHZ. Type B+ is also sensitive to all residual currents and is additionally equipped with a tripping curve thatlimits the tripping current to max. 420 mA for frequencies up to 20 kHz. Whereas the Type Bfq will tolerate systems caused earth leakage currents at higher frequencies up to 50 kHz.

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Översikt Modeller Resurser Support

Tripping current

all current sensitive

Compliant to

IEC 61008, IEC 62423

Frequencies

mixed frequencies up to 50 kHz

Viktiga egenskaper

Part of the xEffect industrial/commercial series
Safe power disconnection at smooth DC and AC
Highest system availability by digital technology
Real-time measurement of the residual current
Easy operation and refitting
For fault current/residual current protection and additional protection
All-current sensitive RCCB for fault or additional protection
Digital features to increase the system availability
System monitoring: Preventive information/warning before the RCD trips in case of leakage currents
– Integrated auxiliary contact for remote prewarning
– Local Indication through 3 LEDs
B+ types also meet the requirements of superior fire-protection systems according to VDE 0664-400
4-pole types can also be used as 2-pole devices for photovoltaic applications
New level of accuracy -> reduced unwanted tripping
Comprehensive range of accessories
Real contact position indicator
Fault current tripping indicator
Automatic re-setting possible
Transparent designation plate
Twin-purpose terminal (lift/open-mouthed) above and below
Busbar positioning optionally above or below
Free terminal space despite installed busbar
Universal tripping signal switch, also suitable for FAZ, FRBmM-1N can be mounted subsequently
Auxiliary switch Z-HK can be mounted subsequently
Contact position indicator red - green
Tripping indicator white - blue
Additional safety
- Possibility to seal
- Possibility to lock in ON and OFF position
Delayed types (G, S) suitable for use with standard fluorescent lamps, with or without electronic ballast (30mA-RCD: 30 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.

Functioning LED monitoring:

The green LED becomes active
at 0-30% IΔn
Tolerance: ± 5%
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.

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

The yellow LED becomes active
at 30-50% IΔn
Tolerance: ± 5%
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.

The red LED becomes active
at >50% IΔn
Tolerance: ± 5%
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.

Type B increases safety and reliability

Smooth DC residual currents can occur in industrial, commercial and residential applications which contain photovoltaic systems, frequency converters or electronic components. The extended sensitivity of the RCCB Type B increases safety and reliability considerably by reducing nuisance tripping.

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.

Benefits:

Reliable protection for machines with
3-phase frequency converters
Safe power disconnection at smooth DC
and AC residual Currents

Detection of high frequency
residual currents
Highest system availability by
digital technology and pre-warnings

Digital technology allows permanent indication

The special adapted tripping curve incorporated in the RCCB Type Bfq complies with the specifications of the standard RCCB Type B and avoids in addition unwanted tripping in industrial applications which contains high-power frequency converter controls. Bfq types are the special B type with adapted tripping curve up to 50 kHz for all types of residual current. They are resistant to tripping by leaking currents in circuits with powerful frequency inverters.

Different types offer several advantages

Type -G/B and G/B+: High reliability against unwanted tripping. Compulsory for any circuit where personal injury or damage to property may occur in case of unwanted tripping. Protection against all types of fault currents.
Type -S/B and S/B+: Selective residual current device. Protection against all types of fault currents.
Type -S/Bfq: 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. Protection against all types of fault currents.

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FRCdM Type B, Bfq and B+ xEffect Residual Current Circuit Breaker