RCBO
P 025 Low Voltage Brief Catalogue -
NB4LE Residual Current Operated Circuit Breaker (Electronic)
1. General 1.1 Function Personnel and fire protection: Cable and line protection against overload and short-circuits. 1.2 Selection Rated residual operating current I∆n ＝30mA, additional protection in the case of direct contact. RCD Type Type A RCD Type A is ensured for sinusoidal, alternating residual currents as well as for pulsed DC residual currents, whether they be quickly or slowly increase. Tripping curve B curve (3 In-5 In) protection and control of the circuits against overloads and short-circuits; protection for people and big length cables in TN and IT systems. C curve (5 In-10 In) protection and control of the circuits
NB4LE
against overloads and short-circuits; protection for resistive and inductive loads with low inrush current.
Standard
IEC/EN 61009-1
Type (wave form of the earth leakage sensed) Thermo-magnetic release characteristic
A
B, C 6, 10, 13, 16, 20, 25, 32
Rated current In Poles Rated voltage Ue
A
2P 230/240 0.03
A V
Rated sensitivity I△n Rated residual making and breaking capacity I△m Rated short-circuit capacity lcn Break time under I△n Rated frequency Rated impulse withstand voltage (1.2/50)Uimp
3,000
A
Electrical features
6,000 ≤0.1 50/60
s A Hz
kV
4
2 500 2 2,000 10,000
Dielectric TEST voltage at ind. Freq. for 1min Insulation voltage Ui Pollution degree Electrical life Mechanical life Contact position indicator Protection degree
kV V
Yes
Mechanical features
IP20
Ambient temperature (with daily average≤35℃)
-25~+40
℃
Storage temperature
-25~+70
℃
2. Technical data 2.1 Curves
t(s)
B Curve
C Curve
t(s)
10000 5000 2000 1000 1h
10000 5000 2000 1000 1h
500 200 100
500 200 100
50 20 10
50 20 10
5 2
5 2
1
1
0.5 0.2 0.1
0.5 0.2 0.1
0.05 0.02 0.01
0.05 0.02 0.01
0.005 0.002 0.001
0.005 0.002 0.001
0.5
1
2
3
4
5
7
10
20
30
50
70
100
200
1/In
1/In
0.5
1
2
3
4
5
7
10
20
30
50
70
100
200
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