Note: According to the pole number of product, it calssifies three and four poles. The neutral pole (N-Pole) of the four-poles products has four types:
Type A: N-pole without over-current release unit, it has been connected all the time,not closing and opening with the other three poles.
Type B: N-pole without over-current release unit, which closing and opening with the other three poles.
Type C: N-pole fixed with over-current release unit, which closing and opening with the other three poles.
Type D: N-pole fixed with over-current release unit, it has been connected all the time, not closing and opening with the other three poles.
1. The limiting breaking and arc-over distance includes horizontal and vertical installation.
2. If the three-pole breaker of this series is connected with three phase load, the load can not have neutral line, otherwise the breaker will have fault action.
3. If the three-pole breaker of this series is connected with single phase load, the phase line willbe connected to the left pole, and the neutral line is connected to the right pole, the middle pole is blanket
3. Protection Characteristic
The thermal release of the breaker has again-time-limit property; the electromagnetic release is inst. Operation, its property see table 2(for distribution),table 3 (motor protection).
Table 2
| Rated current of Release(A) |
Thermal release (ambient temperature +40°C) |
Electromagnetic release operating current(A) |
| 1.05In(cold state ) non-operating time (h) |
1.03In(hot state) acting time (h) |
| 10 ≤ In ≤ 63 |
1 |
1 |
10In ± 20% |
| 63 ≤ In ≤ 125 |
2 |
2 |
| 125 ≤ In ≤ 630 |
2 |
2 |
5In ± 20%
10In ± 20% |
Table 3
| Rated current of Release |
Thermal release (ambient temperature +40°C) |
Electromagnetic Release operating current(A) |
| 1.0In (cold state) non-operating time(h) |
1.20In(hot state) acting time(h) |
1.50In(thermal state) operating time |
7.2In(cold state) operating time |
| 10 ≤ In ≤ 400 |
2 |
2 |
8min |
6s<Tp ≤ 20s |
12In±20% |
4. Residual current operating time of earth leakage circuit breaker
4.1 Non-delay type operation characteristics see table 4( I Δ n≤ 30mA should be Nondelay type )
Table 4
| Rated current |
I Δ n |
2I Δ n |
5I Δna |
10I Δ n |
| Non-delay type |
Max.breaking time(s) |
0.3 |
0.15 |
0.04 |
0.04 |
Note:ato I Δ n ≤ 30mA earth leakage circuit breaker, 0.25A can instead of 5I Δ n
According toa, adopt 0.25A, then 10 I Δ n is 0.5A.
4.2 Delay type operation characteristics see table 5
Limiting non-driven time of delay type earth leakage circuit breaker according to 2l Δ n,operation characteristics see table 5 |