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RCCBs B type and F type

Universal current sensitive RCCBs B type and F type. Ultimate protection of people and equipment.






Type B

In adition to release residual current waveforms of type A, B type RCCBs are used to detect smooth DC residual currents. B Type RCCBs are recommended for use with EV Charge and drives and inverters for supplying motors for pumps, lifts, textile machines, machine tools… since they recognise a continuous fault current with low level ripple.


Type F

Offer the same range of protection and functionality as a Type A RCD; this means that release with sinusoidal AC currents as well as pulsating DC currents. In addition to this, they are capable of detecting residual currents from mixed frequencies of up to 1000 Hz, which can often occur on the outgoing feeder side of single-phase frequency converters.


This prevents undesirable interruptions to the electrical supply if, for example, pulsed leakage currents of up to ten milliseconds occur at activation of filter capacitors.


Type A-Ai: Release with sinusoidal currents and also with pulsating direct current which occur suddenly or slowly rise in magnitude.

Type S-Si (type A-Ai): Time delay release with sinusoidal currents and also with pulsating direct current which occur suddenly or slowly rise in magnitude.


Type AC: Release with sinusoidal currents which occur suddenly or slowly rise in magnitude.

Types of Wave form detected by RCCBs and classification


  • Controllers and variable speed drives
  • Battery chargers and inverters
  • Frequency converters
  • Photovoltaic systems, a.c side
  • Charging stations for Electric Vehicles
  • Variable speed machine tools
  • UPS, Computer Data Centers
  • Elevator controls
  • Cranes of all kinds
  • Test set-ups in laboratories
  • Backed-up power supplies


Rated current Inn (A)

16, 25, 40, 63, 80

25, 40, 63, 80

Residual current I∆ (mA)

30, 100, 300, 500


Rated Voltage AC Un (V)

2P: 230, 4P: 230/400

2P: 240, 4P: 240/415

Minimum operating voltage U min



30 mA (V)

2P: 176, 4P: 306

2P: 176, 4P: 306

100,300,500 mA (V)

2P: 117, 4P: 205


Mechanical/electrical endurange



Tropicalisation acc. to EN/IEC 60068-2-28/2-30 and DIN 40046

95%RH at 55ºC

95%RH at 55ºC

Terminal capacity flexible/rigid cable

1,5-50 (1,5 - 35)

1,5-50 (1,5-35)


2, 4

2, 4 (4)

Nuisance tripping resistance

3000A 8/20 µs

3000A 8/20 µs

Ambient temperature (ºC)

-25 up to 40

-25 up to 40

Weight (g)

2P: 340, 4P: 420

2P: 220, 4P: 385

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