VF008 DC Circuit Breaker
1. General
1.1 Standard: IEC/EN 60947-2 ,RoHS;
1.2 Rated voltage up to 1000V, Rated current up to 63A;
1.3 Protection of circuits against overload currents;
1.4 Protection of circuits against short- circuit currents;
1.5 VF008 DC circuit-breakers are used in communication systems and PV DC systems.
2. Features
2.1 Excellent breaking capacity
2.2 Double connection function of lead wire and bus bar
2.3 Stored energy operation, fast closing, long service life
2.4 Convenient installation, disassembly
2.5 Contact on-off indication, higher security
2.6 Green environmental protection and energy saving
3. Operating conditions
3.1 Ambient temperature: -35℃ - + 70℃(Refer to 4.3)
3.2 The atmosphere condition: ≤95%
3.3 Pollution degree: ll
3.4 Altitude: ≤2000m(if exceed 2000m,Refer to 4.4)
4. Technical data
4.1 Classification
4.1.1 Rate Current In:
1A,2A,3A,4A,6A,10A,13A,16A,20A,25A,32A.40A,50A,63A
4.1.2 Number of poles: 1P, 2P, 4P
4.1.3 Tripping curves: C Type, (7-10)In
4.2 Parameters
4.2.1 Rated breaking capacity Icu
| Rated current In (A) | Number of poles | Rated voltage Ue (V) | Rated breaking capacity Icu (A) |
| 1-63 | 1 | 250 | 6000 |
| 2 | 500 | 6000 |
| 4 | 1000 | 6000 |
4.2.2 Electrical and mechanical life
a. Electrical life: ＞1500
b. Mechanical life: ＞20,000
4.2.3 Rated impulse withstand voltage Uimp: 4KV
4.2.4 (28-32)℃ ambient temperature over-current protection features.
| Test | Test current | Initial state | Time limit for tripping or not tripping | Expected result | Remark |
| a | 1.05In | Cold state | t≤1h | Not tripping | |
| b | 1.30In | Right after test number a | t＜1h | Tripping | The current is rising within 5s |
| c | 7In | Cold state | t≤0.2s | Not tripping | |
| d | 10In | Cold state | t＜0.1s | Tripping | |
Note: The terminology”Cold state”means that the test is performed at the base calibration temperature with no load prior to the test.
4.3 Temperature derating
| Rated current (A) | Temperature compensation coefficient under various operational temperature. |
| -35℃ | -30℃ | -20℃ | -10℃ | 0℃ | 10℃ | 20℃ | 30℃ | 40℃ | 50℃ | 60℃ | 70℃ |
| 1 | 1.3 | 1.26 | 1.23 | 1.19 | 1.15 | 1.11 | 1.05 | 1 | 0.96 | 0.93 | 0.88 | 0.83 |
| 2 | 2.6 | 2.52 | 2.46 | 2.38 | 2.28 | 2.2 | 2.08 | 2 | 1.92 | 1.86 | 1.76 | 1.66 |
| 3 | 3.9 | 3.78 | 3.69 | 3.57 | 3.42 | 3.3 | 3.12 | 3 | 2.88 | 2.79 | 2.64 | 2.49 |
| 4 | 5.2 | 5.04 | 4.92 | 4.76 | 4.56 | 4.4 | 4.16 | 4 | 3.84 | 3.76 | 3.52 | 3.32 |
| 6 | 7.8 | 7.56 | 7.38 | 7.14 | 6.84 | 6.6 | 6.24 | 6 | 5.76 | 5.64 | 5.28 | 4.98 |
| 10 | 13.2 | 12.7 | 12.5 | 12 | 11.5 | 11.1 | 10.6 | 10 | 9.6 | 9.3 | 8.9 | 8.4 |
| 13 | 17.16 | 16.51 | 16.25 | 15.6 | 14.95 | 14.43 | 13.78 | 13 | 12.48 | 12.09 | 11.57 | 10.92 |
| 16 | 21.12 | 20.48 | 20 | 19.2 | 18.4 | 17.76 | 16.96 | 16 | 15.36 | 14.88 | 14.24 | 13.44 |
| 20 | 26.4 | 25.6 | 25 | 24 | 23 | 22.2 | 21.2 | 20 | 19.2 | 18.6 | 17.8 | 16.8 |
| 25 | 33 | 32 | 31.25 | 30 | 28.75 | 27.75 | 26.5 | 25 | 24 | 23.25 | 22.25 | 21 |
| 32 | 42.56 | 41.28 | 40 | 38.72 | 37.12 | 35.52 | 33.93 | 32 | 30.72 | 29.76 | 28.16 | 26.88 |
| 40 | 53.2 | 51.2 | 50 | 48 | 46.4 | 44.8 | 42.4 | 40 | 38.4 | 37.2 | 35.6 | 33.6 |
| 50 | 67 | 65.5 | 63 | 60.5 | 58 | 56 | 53 | 50 | 48 | 46.5 | 44 | 41.5 |
| 63 | 83.79 | 81.9 | 80.01 | 76.86 | 73.71 | 70.56 | 66.78 | 63 | 60.48 | 58.9 | 55.44 | 52.29 |
4.4 Altitude derating
| Tripping type | Rated current In (A) | Current correction factor | For example |
| ≤2000 | 2000~3000m | ≥3000m |
| C | 1, 2, 3, 4, 6, 10, 13, 16, 20, 32, 40, 50, 63 | 1 | 0.9 | 0.8 | Rated current of 10A products rated current derating 2500m: 0.9×10=9A |
4.5 Curves shown in Figure 1
4.6 Wiring: Apply to 25 mm wire connection terminals
Tightening torque 2.5N·m
| Rated current In (A) | Copper wire nominal cross sectional area(mm²) |
| 1~6 | 1 |
| 10 | 1.5 |
| 13, 16, 20 | 2.5 |
| 25 | 4 |
| 32 | 6 |
| 40, 50 | 10 |
| 63 | 16 |
4.7 Each pole power consumption of the circuit breaker
| Rated current In (A) | Copper wire nominal cross sectional area(mm²) |
| 1~6 | 1 |
| 10 | 1.5 |
| 13, 16, 20 | 2.5 |
4.8 DC application wiring diagram shown in Figure 2
Wiring diagram description:
1. 〇+Positive 〇-Negative
2. L+ Load positive L- Load negative
3. Prohibit power reversed
4. Rated voltage: 1P: 250V, 2P: 500V, 4P: 1000V
5. Strictly forbidden to remove the four poles products of sealing plug wiring operation.
5. Overall and mounting dimensions (mm)
Product Tags:
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VF008 PV System Protection DC Circuit Breaker IEC/EN 60947-2 Standard Images
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