EN
SNC-125 10KA 63A-125A DC MCB
SUNNOM photovoltaic DC circuit breakers can effectively protect key equipment in solar power generation systems. When the DC circuit is overloaded or short-circuited, it can automatically trip to protect photovoltaic equipment. When the equipment needs maintenance, it can also be manually disconnected to facilitate equipment maintenance. It plays a good role in the safe operation of photovoltaic modules, inverters, energy storage batteries and other equipment.
Description
| Rated lmpact Voltage Uimp(kV) | 4 | |||||
| Ultimate Breaking Capacity lcu (kA) | 6 | |||||
| Run Breaking Capacity lcs (%lcu) | 75% | |||||
| Curve Type | C | |||||
| Trip Type | Therma-magnetic | |||||
| Mechanical | Actual average value | 9700 | ||||
| Standard value | 9700 | |||||
| Electric | Actual average value | 300 | ||||
| Standard value | 300(accord to TUV standard) | |||||
| Control and indication | Option | ||||
| Shunt release (SHT) | Option | ||||
| Undervoltage release (UNT) | Option | ||||
| Auxiliary contact (AX) | Option | ||||
| Alarm contact (AL) | Option | ||||
| Condition and installation | |||||
| Wiring capacity (mm2) | Ins 32A,1-6,140A, 10~16 | ||||
| Ambient temperature (°C ) | -35~+70 | ||||
| Altitude | ≤2000 | ||||
| Relative humidity | ≤95% | ||||
| Pollution Level | 3 | ||||
| Installation Environment | No obvious shock and vibration | ||||
| Installation category | Class Ⅲ | ||||
| Installation | DIN Standard rail | ||||
| Dimensions(W)x(H)x(Deep) | W | 18 | 36 | 54 | 72 |
| H | 80 | 80 | 80 | 80 | |
| Deep | 71 | 71 | 71 | 71 |
| Over current tripping characteristic | |||||
| Test | Test Current | Initial State | Limited Time | Expected Result | Remarks |
| a | 1.05In | Cold state | t 1h | Non-tripping | |
| b | 1.3In | Right after test numbera | t<1h | Tripping | The current is rising within 5s |
| c | 7In | Cold state | t≤s | Non-tripping | |
| d | 10In | Cold state | t0.1s | Tripping | |
| Current correction values used at different ambient temperatures | ||||||||||||
| Temperature | ||||||||||||
| Fixed current(A) | ||||||||||||
| Rated Current (A) | -35 | -30 | -20 | -10 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 |
| 3A | 3.9 | 3.78 | 3.69 | 3.57 | 3.42 | 3.3 | 3.12 | 3 | 2.88 | 2.79 | 2.64 | 2.49 |
| 6A | 7.8 | 7.56 | 7.38 | 7.14 | 6.84 | 6.6 | 6.24 | 6 | 5.76 | 5.64 | 5.28 | 4.98 |
| 10A | 13.2 | 12.7 | 12.5 | 12 | 11.5 | 1 1.1 | 10.6 | 10 | 9.6 | 9.3 | 8.9 | 8.4 |
| 16A | 21.12 | 20.48 | 20 | 19.2 | 18.4 | 17.76 | 16.96 | 16 | 15.36 | 14.88 | 14.24 | 13.44 |
| 20A | 26.4 | 26.4 | 25 | 24 | 23 | 22.2 | 21.2 | 20 | 19.2 | 18.6 | 17.8 | 16.8 |
| 25A | 33 | 32 | 31.25 | 30 | 28.75 | 27.75 | 26.5 | 25 | 24 | 23.25 | 22.25 | 21 |
| 32A | 42.56 | 41.28 | 40 | 38.72 | 37.12 | 35.52 | 33.93 | 32 | 30.72 | 29.76 | 28.16 | 26.88 |
| 40A | 53.2 | 51.2 | 50 | 48 | 46.4 | 44.8 | 42.4 | 40 | 38.4 | 37.2 | 35.6 | 33.6 |
| 50A | 67 | 65.5 | 63 | 60.5 | 58 | 56 | 53 | 50 | 48 | 46.5 | 44 | 41.5 |
| 60A | 83.79 | 81.9 | 80.01 | 76.86 | 73.71 | 70.56 | 66.78 | 63 | 60.48 | 58.9 | 55.44 | 52.29 |
The shell is made of PBT V0 flame-retardant shell. The product is resistant to high temperatures and can be used in an environment of -35℃ to +70℃. It can also effectively prevent fires caused by short circuits or overloads.
Internal copper fittings provide excellent conductivity and switching capabilities, while a thickened coil provides reliable short-circuit protection and rapid response. Silver contacts resist oxidation and offer a longer service life, with a mechanical lifespan of up to 9,700 cycles, even with frequent use. The arc extinguishing hood, a thickened DC-specific arc extinguishing hood with high-performance arc extinguishing technology, ensures stable disconnection even under high current and high voltage conditions, with a breaking capacity of up to 10kA, eliminating the risk of arcing.
The 10MMX10MM rust-proof terminal block can easily handle wiring cables of various specifications.The product protection level is IP20, and the card slot on the back of the product is a 35MM international standard guide rail card slot, which can be easily installed in the power distribution equipment.
The product has its own indicator window, which can not only serve as a safety warning, but also remind users to repair the fault in time.
The standard A ratings of the SN7 series circuit breakers are 10A, 16A, 20A, 25A, 32A, 40A, 50A and 63A. The regular voltages are 1P 250V, 2P 500V, 3P 750V, 4P 1000V. Both voltage and current can be customized. Product color and product logo can also be customized.
