YCB8s-63PVn photovoltaic dedicated DC circuit breaker is mainly used in solar photovoltaic power generation systems. The maximum working voltage can reach DC1200V, and the rated current is up to 63A. It is used for overload and short circuit protection of the line, and can quickly cut off the fault current of the DC distribution system, protecting the important components in the solar power generation system - photovoltaic modules from the harm of DC side reverse current and AC side feedback current caused by inverter faults, ensuring the reliable operation of the solar photovoltaic power generation system.
Standards:IEC60947-2
The product can achieve non-polar wiring, ensuring reliable equipment safety.
| Product name | Shell frame | Breaking capacity | PV DC | Number of poles | Rated current | Operating voltage |
| YCB8s | 63 | H | PVn | 2P | 20A | DC600 |
| YCB8s | 63 | Default:6KA H:10KA |
PVn:Photovoltaic DC non-polarity | 1P 2P 3P 4P |
1A 2A 3A 4A 6A 10A 16A 20A 25A 32A 40A 50A 63A |
DC300 DC600 DC900 DC1200 |
| Number of poles | 1P | 2P | 3P | 4P |
| Rated operating voltage Ue (V) | DC300 | DC600 | DC900 | DC1200 |
| Rated insulation voltage Ui(V) | DC300 | DC600 | DC900 | DC1200 |
| Rated impulse withstand voltage Uimp (KV) | 6 | |||
| Rated frame current (A) | 63 | |||
| Rated current In(A) | 1,2,3,4,6,10,16,20,25,32,40,50,63 | |||
| Ultimate short-circuit breaking capacity Icu (KA) | Default:6;H:10 | |||
| Instantaneous tripping characteristic | B,C,K | |||
| Service life (times) | Mechanical 20000,electrical life 1500 | |||
| Protection degree | IP20 | |||
| Environmental temperature for use | -25℃~+40℃ | |||
| Altitude | ≤2000m | |||
| Wiring ability(mm²) | 25 | |||
| Connection | both upper andlower incoming lines are acceptable | |||
| Use Category | A | |||
| Standard | IEC60947-2 | |||
| Rated current(A) | Overload tripping characteristics | Instantaneous tripping characteristics(A) |
|
| 1.05In agreed non tripping time H(cold state) | 1.30ln agreed tripping time H (hot state) | ||
| In≤63 | 1 | 1 | B(4In±20%) C(8ln±20%) K(10In±20%) |
| In>63 | 2 | 2 | |
Current correction value used in different environments
| Rated current(A) Ambient temperature corresponding to rated current(A) | ||||||||||||
| In(A) | -25℃ | -20℃ | -10℃ | 0℃ | 10℃ | 20℃ | 30℃ | 35℃ | 40℃ | 50℃ | 60℃ | 75℃ |
| 6A | 10.12 | 9.77 | 9.03 | 8.26 | 7.49 | 6.75 | 6 | 5.59 | 5.19 | 4.75 | 4.62 | / |
| 10A | 17.41 | 16.75 | 15.41 | 14.04 | 12.71 | 11.35 | 10 | 9.09 | 8.21 | 7.9 | 8.7 | 7.86 |
| 16A | 21.72 | 21.15 | 20.15 | 19.12 | 18.08 | 17.04 | 16 | 15.49 | 15.1 | 14.38 | 13.52 | 12.75 |
| 20A | 25.86 | 25.79 | 24.61 | 23.47 | 22.32 | 21.16 | 20 | 19.43 | 18.83 | 18.58 | 17.1 | 16.3 |
| 25A | 32.41 | 31.74 | 30.37 | 28.98 | 27.69 | 26.35 | 25 | 24.33 | 23.65 | 23.3 | 24.7 | 23.8 |
| 32A | 44.83 | 43.62 | 41.29 | 38.96 | 36.67 | 34.33 | 32 | 30.83 | 29.67 | 30.7 | 30.8 | 30 |
| 40A | 50.34 | 49.35 | 47.51 | 45.62 | 43.73 | 41.87 | 40 | 39.04 | 38.11 | 38.6 | 36.2 | 35.8 |
| 50A | 63.79 | 62.48 | 59.99 | 57.48 | 54.98 | 52.5 | 50 | 48.76 | 47.48 | 47.1 | 47.5 | 46 |
| 63A | 80 | 78.46 | 75.38 | 72.28 | 69.17 | 66.09 | 63 | 61.46 | 59.93 | 55.6 | 53.8 | 52.4 |
The following accessories are suitable for YCB8s-63PV series, which can provide the functions of remote control of circuit breaker, automatic disconnection of fault circuit, status indication (breaking/closing/fault tripping).
a. The total width of the accessories assembled is within 54mm, the order and quantity from left to right: OF, SD(3max) + MX, MX+OF+MCB, SD can only assemble up to 2 pieces ;
b. Assembled with the body, no tools required;
c. Before installation, check whether the technical parameters of the product meet the requirements of use, and operate the handle to open and close several times to check whether the mechanism is reliable.
• Auxiliary contact OF
Remote indication of closing/opening status of circuit breaker.
• Alarm contact SD
When the circuit breaker fault trips, it sends out a signal, together with a red indicator on the front of the device.
• Shunt release MX
When the power supply voltage is 70%~110%Ue, the remote control circuit breaker trips after receiving the signal.
• Minimum making and breaking current: 5mA(DC24V)
• Service life: 6000 times (operating frequency: 1s)
| Model | YCB8s-63 OF | YCB8s-63 SD | YCB8s-63 MX | |
| Number of contacts | 1NO+1NC | 1NO+1NC | / | |
| Control voltage (VAC) | 110-415 48 12-24 |
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| Control voltage(V DC) | 110-415 48 12-24 |
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| Working current of contact | AC-12 Ue/le:AC415/3A DC-12 Ue/le:DC125/2A |
/ | ||
| Shunt control voltage | Ue/le: AC:220-415/ 0.5A AC/DC:24-48/3 |
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| Width(mm) | 9 | 9 | 18 | |
| Applicable Environmental Conditions and Installation | ||||
| Storage temperature(C) | -40℃~+70℃ | |||
| Storage humidity | the relative humidity does not exceed 95%when at+25℃ | |||
| Protection degree | Level 2 | |||
| Protection degree | IP20 | |||
| Installation environment | Places without significant vibration and impact | |||
| Installation category | Category Ⅱ,Category Ⅲ | |||
| Installation method | TH35-7.5/DIN35 rail installation | |||
| Maximum wiring capacity | 2.5mm² | |||
| Terminal torque | 1N ·m | |||
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