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Catalog excerpts

NFIB - 2

Features • ISKRA NFIB are type B residual current circuit breakers (RCCB) for which tripping is ensured as for type A and in addition for smooth d.c. residual currents, residual d.c. currents which may result from rectifying circuits and high frequency a.c. residual currents. • Intended for use in applications with frequency inverters, medical devices, UPS, mobile installations, elevators... • The type B residual current circuit breakers are not intended for use in d.c. systems and networks with operating frequencies other than 50 or 60 Hz. • For type B tripping conditions for frequencies...

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NFIB - 3

Note: Rated frequency 60 Hz on request. Ordering data Rated residual operating current IDn (A) Rated current In (A) Type

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NFIB - 4

Residual Current Circuit Breakers Type B - NFIB Dimensional drawings • Published by Iskra, d. d. • Version 2.0 November 2015

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