Low-voltage Brief Catalogue
Low-voltage Brief Catalogue
AFDD
AFDD
031
032
P -
P -
NB4LE-AFD Arc fault detection circuit-breaker with residual current operated function
NB3LE-AFD Arc fault detection circuit-breaker with residual current operated function
1. General
1. General
1.1 Function NB4LE-AFD arc fault detection circuit-breaker with residual current operated function applies to circuits with frequency of 50Hz, rated voltage AC 230/240V, and rated current up to 32A. It provides overload, short circuit, leakage protection and arc fault detection, and can also be used for infrequent switching of the circuit under normal circumstances. 1.2 Selection RCD Type Type A - Tripping is ensured for sinusoidal, alternating residualcurrents as well as for pulsed DC residual currents, whether they be quickly applied or slowly increase. Tripping curve: B curve (I1=1.13In; I2=1.45In; I4=3In; I5=5In) 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 (5-10 In) protection and control of the circuits against overloads and short-circuits; protection for resistive and inductive loads with low inrush current. BK curve (I1=1.05In; I2=1.3In; I4=3In; I5=5In) protection and control of the circuits against overloads and short-circuits;protection for people and big length cables in TN and IT systems. CK curve (I1=1.05In; I2=1.3In; I4=5In; I5=10In)protection and control of the circuit against overloads and short-circuits;protection for resistive and inductive loads with low inrush current.
1.1 Function NB3LE-AFD arc fault detection circuit-breaker with residual current operated function applies to circuits with frequency of 50Hz, rated voltage AC 240V, and rated current up to 32A. It provides overload, short circuit, leakage protection and arc fault detection, and can also be used for infrequent switching of the circuit under normal circumstances. 1.2 Selection RCD Type Type A - Tripping is ensured for sinusoidal, alternating residual currents as well as for pulsed DC residual currents, whether they be quickly applied or slowly increase. Tripping curve: B curve (3-5 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 (5-10 In) protection and control of the circuits against overloads and short-circuits; protection for resistive and inductive loads with low inrush current.
NB4LE-AFD
NB3LE-AFD
2. Technical features
2. Technical features
Standard
IEC/EN61009-1,IEC/EN62606
Standard
BS-EN 61009-1,BS-EN 62606
Type (wave form of the earth leakage sensed) Thermo-magnetic release characteristic
A
Type (wave form of the earth leakage sensed) Thermo-magnetic release characteristic
A
B, C
BK, CK
B, C
Rated current In
A 6, 10, 13, 16, 20, 25, 32
10, 13, 16, 20, 25
Rated current In
A 6A, 10A, 13A, 16A, 20A, 25A, 32A
Poles
2P
Poles
1P+N
Rated voltage Ue
V
230/240
Rated voltage Ue
V
240
Rated sensitivity I △ n
A 0.03
Rated sensitivity I △ n
A 0.01, 0.03
Rated residual making and breaking capacity I △ m Rated short-circuit capacity lcn
Rated residual making and breaking capacity I △ m Rated short-circuit capacity lcn
A 3,000
A 500
Electrical features
Electrical features
A 6,000
A 6,000
Break time under I △ n
s
≤0.1 50/60
Break time under I △ n
s
≤0.1
Rated frequency
Hz
Rated frequency
Hz
50
Rated impulse withstand voltage(1.2/50) Uimp Dielectric test voltage at ind. Freq. for 1 min
kV 4 kV 2
Rated impulse withstand voltage(1.2/50) Uimp Dielectric test voltage at ind. Freq. for 1 min
V
4,000
kV 2
Insulation voltage Ui
Insulation voltage Ui
V
500
V
500
Pollution degree
2
Pollution degree
2
Electrical life
4,000
Electrical life
4,000
Mechanical life
10,000
Mechanical life
10,000
Fault indicator light Protection degree
Yes
Fault indicator light Protection degree
Yes
Mechanical features
Mechanical features
IP20
IP20
Ambient temperature (with daily average≤35 ℃ )
-25...+40 -25...+70
Ambient temperature (with daily average≤35 ℃ )
-25...+40 -25...+70
℃ ℃
℃ ℃
Storage temperation
Storage temperation
Terminal connection type
Cable/ U-type/Pin-type busbar
Terminal connection type
Cable/ U-type/Pin-type busbar
mm 2 25 AWG 18-3 10 AWG 18-8 mm 2
mm 2 16 AWG 18-5 6 AWG 18-10 mm 2
Terminal size top/bottom for cable
Terminal size top/bottom for cable
Terminal size top/bottom for busbar
Terminal size top/bottom for busbar
Installation
Installation
N·m 2 In-Ibs. 18
N·m 2 for bottom,1.2 for top In-Ibs. 18
Tightening torque
Tightening torque
Mounting
On DIN rail EN 60715 (35mm) by means of fast clip device
Mounting
On DIN rail EN 60715 (35mm) by means of fast clip device
Connection
Bottom electrical feeding
Connection
Bottom electrical feeding
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