residual current operation circuit breaker(shortened as auto reclosing) is a newly-developed new-generation integrative multi-functional product which adopts patent technology and conforms to all intelligent requirements of state grid administration. It's the priority product to cooperate with China National Grid. It is equipped with functions of short-circuit, over-current, residual current, phase failure, off zero and special wave; Apart from these, we also have residual current display, real-time load current display, phase voltage display, on-off indication, time display and fault inquiry; What's more, it has functions of auto-reclosing after residual current operation circuit breaker acts when residual current, under-voltage, overvoltage, phase failure happens. It is used in power distribution circuit of AC 50Hz rated insulation voltage 800V(690V for 100A frame current), rated voltage 380/400V,rated current 40A-630A to distribute energy and protect circuit line.
It is widely used in three phase four wire neutral point directly grounded(TT system) LV grid to provide indirect contact protection against personal electric shock hazard and also is used to protect against grounding fault, over-current and short circuit of circuit or equipments.
Conformity Standard
Conforms to GB14048.2 standard
| Main Technical Parameter |
|
| 1. Technical Specification |
|
| Frame |
100 |
250 |
| Rated insulation voltage Ui(V) |
690 |
800 |
| Rated impulse withstand voltage Uimp(kV) |
6 |
6 |
| Rated working voltage Ue(V) |
380/400 |
380/400 |
| Working category |
A |
A |
| Breaking capacity Icu/Ics |
35/17.5 |
50/25 |
| Rated current(A) |
Thermalelectromagnetic type |
40/50/63/80/100 |
100/125/160/180/200/225/250 |
| Electronic type |
40-100(adjustable) |
100-250 (adjustable) |
| Rated residual operation current IΔn(mA) |
75/150/300/500 |
75/150/300/500 |
| Rated residual no-operation current (mA) |
1/2IΔn |
| Maximum breaking time (s) |
0.2/0.5/OFF(residual current alarm no trip) |
| Re-closing time (s) |
20-60 |
| Residual operation type |
AC |
| Weight (kg) |
3 |
4 |
| Frame |
400 |
630 |
| Rated insulation voltage Ui(V) |
800 |
800 |
| Rated impulse withstand voltage Uimp(kV) |
6 |
6 |
| Rated working voltage Ue(V) |
380/400 |
380/400 |
| Working category |
A |
A |
| Breaking capacity Icu/Ics |
70/35 |
70/35 |
| Rated current(A) |
Thermalelectromagnetic type |
200/250/315/350/400 |
400/500/630 |
| Electronic type |
160-400(adjustable) |
250-630(adjustable) |
| Rated residual operation current IΔn(mA) |
100/150/300/500 |
100/300/500/1000 |
| Rated residual no-operation current (mA) |
1/2IΔn |
| Maximum breaking time (s) |
0.2/0.5/OFF(residual current alarm no trip) |
| Re-closing time (s) |
20-60 |
| Residual operation type |
AC |
| Weight (kg) |
10 |
12 |
| Note: We can customize any of the four types(75mA, 150mA, 300mA, 500mA) for 100/250 frame. |
| We can customize any of the four types(100mA, 150mA, 300mA, 500mA) for 4001/630 frame. |
| 2. Protection Characteristics of Thermal Electromagnetic Over-current Release |
| Ambivalent Temperature |
Testing Current |
Release Time |
Condition |
| ≤6.3 |
>6.3 |
| +40°C |
1.05In |
no trip within 1h |
no trip within 2h |
cold starts |
| 1.3In |
trip within 1h |
trip within 2h |
hot starts |
| suitable for any temperature |
10In |
<0.2s |
<0.2s |
cold starts |
| 3. Protection Characteristics of Electronic Type Overload Long-time Delay |
|
|
|
|
|
| Item |
Parameter range |
| Current setting value Ir(A) |
Ir=0.4~1.0×In+OFF, adjusting step=1A; protection off |
| Action Characteristics |
I≤1.05Ir, 2h no act; I≥1.3Ir, |
Delay setting value Tr(s)
@1.5Ir; Accuracy±15% |
8 |
12 |
16 |
24 |
32 |
48 |
64 |
96 |
128 |
256 |
| 1.5Ir |
8 |
12 |
16 |
24 |
32 |
48 |
64 |
96 |
128 |
256 |
| 2.0Ir |
4.5 |
6.75 |
9 |
13.5 |
18 |
27 |
36 |
54 |
72 |
144 |
| 6.0Ir |
0.5 |
0.75 |
1 |
1.5 |
2 |
3 |
4 |
6 |
8 |
16 |
| 7.2Ir |
0.35 |
0.52 |
0.9 |
1.04 |
0.13 |
2.08 |
2.78 |
4.17 |
5.56 |
11.11 |
| 4. Short-circuit Instantaneous Protection |
| Item |
Parameter range |
| Current setting value Ir(A) |
Ir=2.0~1.0×In+OFF, adjusting step=0.1×In; protection off |
| Action Characteristics |
I≤0.85Ii, no act; I≥1.15Ii, Act time≤70ms |
| 5. Voltage protection (The function can be set ON and OFF.) |
| Under-voltage Protection Parameters |
|
|
| Item |
Setting Range |
Step |
| Protection Setting Value |
154V~187V+OFF |
1V |
| Protection Delay Setting Value |
1~10s |
1s |
| Working Mode |
Trip/Off/Measure/Protection Accuracy: ±5% |
| Over-voltage Protection Parameters |
| Item |
Setting Range |
Step |
| Protection Setting Value |
253V~286V+OFF |
1V |
| Protection Delay Setting Value |
1~10s |
1s |
| Working Mode |
Trip/Off/Measure/Protection Accuracy: ±5% |
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