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NFIN Residual Current Device

Application

The Residual Current Device(RCD) NFIN is in conformity with the standards of IEC 1008, VDE 0664, CEE27 and BS 4293.
It can cut off the fault circuit immediately on the occasion of shock hazard or earth leakage of trunk line. Thus it is suitable to avoid the shock hazard and fire caused by earth leakage.
NFIN RCD is mainly suitable for using in varieties of plants, enterprises, buildings, constructions, commerce, hotels and families. It can be used in circuits up to single phase 240V, three phase 415V, 50 or 60Hz.

NFIN 2P 63/0.3

NFIN 2P 40/0.03

NFIN 4P 63/0.1

NFIN 4P 40/0.03

Specification

Type	NFIN25	NFIN40	NFIN63	NFIN100
Rated current I¡÷n(A)	25	40	63	100
Rated operating current for earth leakage I_¡÷n (A)	0.03, 0.1, 0.3, 0.5		0.1 0.3 0.5
Rated non-operating current for earth leakage I_¡÷n (A)	0.5I_¡÷n
Voltage Un(V)	240(220) 415(380)
Pole	2, 4

Main Technical Data

Operating time(second)	I_¡÷n	2I_¡÷n	0.25A(Or 51_¡÷n)
Operating time(second)	0.2	0.1	0.04
Limited value of non-operating current for balance load or unbalance load	2I¡÷n
In min value of rated making and breaking capacity	In=25	In=40	In=63
In min value of rated making and breaking capacity	200	300	400
Rated conditional short circuit Inc(A)	1500	2000	3000
Endurance(times)	4000

NFIN Operation Principle Fig

NFIN Dimensions

It can be mounted with railway and can be connected busbar

NFIN (NEW)Operation Principle Fig

NFIN Dimensions

It can be mounted with railway and can be connected busbar