Residual Current Circuit Breakers FI, NFI, RFI2

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Residual current circuit breakers – FI, NFI

With a residual current circuit breaker (RCCB) the following protective measures are available: fault protection, protection against fire and additional protection in case of direct contact.



Features

  • Isolating function

  • Simple and solid assembly to a 35 mm wide mounting rail according
    to EN 60715, optional operating position

  • Additional colour display of the position of main contacts
    (red – contacts closed, green – contacts open)

  • A terminal shape prevents connection of a conductor outside the connection area

Types
  • RCCBs are manufactured in two versions in compliance with the EN 61008 standard.

  • Type A (designated NFI) – sensitive to alternating and pulsating dc residual operating currents.

  • Type AC (designated FI) – sensitive only to alternating residual operating currents of a sine wave form.

Special versions
  • Type S: A switch with a delayed break enabling selectivity regarding a general type and a short-time delayed type (type G) connected on the load side.

  • Type G: a short-time delayed breaking characteristic (a min. non-actuating period is 10 ms).

  • FIR-FIT combination: It is used for a protection in circuits where operational currents are higher than rated currents of residual current circuit breakers.


Residual current circuit breakers with overcurrent protection – RFI2

RFI2

RFI2 is a combination of a residual current circuit breaker and a miniature circuit breaker. With RFI2 the following protective measures are available: fault protection, protection against fire and additional protection in case of direct contact.

Features
  • A built-in protection against overload and short-circuit

  • Tripping characteristics B in C according to EN 61009

  • Sensitive to alternating and pulsating dc residual currents  – type A

  • Possibility of sealing in ON or OFF position

  • Simple and solid assembly to a 35 mm wide mounting rail according to EN 60715, optional operating position

  • Additional colour display of the position of main contacts (red – contacts closed, green – contacts open)


Documentation

Data sheets:
Catalogue pages
Catalogue pages (in Italian language)
Catalogue pages (in Spanish language)
Catalogue pages (in Russian language)
Catalogue pages (in Serbian language)

Certificates:  
NFI EC Declaration of Conformity
VDE NFI Marks Approval
Fire certificate (in Russian language)
NF certificate for NFI, FI
GOST-R Certificate (in Russian language)

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