Arc fault circuit breakers are also known as arc fault inspection devices. AFDD is mainly to reduce the risk of electrical fire caused by series arc or parallel arc faults between live conductors. , It can check the electric arc fault, disconnect the power circuit before the electric fire occurs, and effectively avoid the electric fire caused by the arc fault. AFDD can also be combined with residual current protection appliances and overcurrent protection appliances to form a multi-purpose protection device.
The Changan Electric AFDD provides a full protection solution against electrical ignited fires.
The AFDD (AFCI) provides a full protection solution in one device that enhances consumers’ peace of mind against fires ignited by electrical installations, while adding additional comfort. This all-in-one device gives the consumer full protection in his home and enables the installer to offer and install products that comply with new codes and standards.
Mostly these devices are intended for residential applications (bedrooms, nurseries), hospitals, assisted living, nursery schools, where the residents might have difficulties evacuating, because they are immobile, sleeping or unaware of the threat. As well Shopping centres, airports, train stations such applications, where large groups of people have to be evacuated in case of fire.
It is recommended to use an AFDD as well in buildings where valuable assents need to be protected, like a museum or a library.
Arc Fault Detection Devices (AFDDs) are devices that protect specifically against arc faults. They automatically trip a circuit when they detect dangerous electric arcs.
They are compact, modular devices that are easily installed in electrical panels along with other protective equipment. Each AFDD is designed to protect an electric, instantly detecting any dangerous arc. You should install AFDDs on the electrical circuits most exposed to risk – e.g., the final circuits that supply socket outlets.
Yes. Arc fault detection devices are extremely sensitive and designed to sense and respond only to potentially dangerous arcs. They use a special algorithm to distinguish between dangerous and working arcs – i.e. the harmless sparks that you see when you flick a switch or pull a plug.
This is important as over-sensitive AFDDs could be prone to nuisance tripping – e.g., interrupting a circuit when it senses the slightest harmless arc.
The arc fault detection device technology makes it possible to detect dangerous arcs and thus protect installations.
Such devices have been deployed successfully in the United States since the early 2000s, and their installation is required by the National Electric Code.
Since 2013, the IEC 62606 international standard defines Arc Fault Detection Devices (AFDD) which detect the presence of dangerous electric arcs and cut off the circuit’s power supply to prevent initiating the first flame.
Speed is of the essence as an electrical arc can degrade in a flash (literally), igniting any nearby inflammable material and causing a fire. According to IEC 62606, arc fault detection devices shall react very fast in case of arc faults and isolate the circuit within a limited time. These dangerous electric arcs are not detected by residual current devices nor by circuit breakers or fuses.
More specifically, the installation of the AFDD is highly recommended to protect circuits with the highest risk of fire, such as:
Currently, the cost of AFDD is relatively high, and you can decide whether to use the product in your existing circuit unit to ensure the safety of your property according to the actual situation.
CAL9-40AFD is 1P+N（Pole N could be on/Off arc fault detection devices with integrated RCBO in 6kA breaking capacity, with rated current up to 40A and sensitivity 300mA. LED arc fault indication (During standard operating mode (toggle in ON position), the LED is green. When the toggle is on OFF position or when a fault occurs, the LED is OFF), gray test push button to verify the correct functioning of residual current device. In only 36mm width, they provide protection against arc faults, overload, short-circuit and earth fault currents.
Protection
①Arc Fault Protection
②Overload Protection
③Short-Circuit Protection
④Earth-Leakage Protection
| Electrical Features | Mode | Electronic | ||
| Type | AC, A | |||
| Rated current In | 6, 10, 16, 20, 25, 32, 40A | |||
| Poles | 1P+N (Pole N could be on/Off) | |||
| Rated voltage Ue | 240V~ | |||
| Insulation voltage Ui | 400V | |||
| Rated frequency | 50Hz | |||
| Rated residual operating current(I△n) | 10, 30, 100, 300mA | |||
| Break time under | ≤0.1s | |||
| Rated breaking capacity | 6,000A | |||
| Energy limiting class | 3 | |||
| Rated impulse withstands voltage (1.5/50) Uimp | 4,000V | |||
| Dielectric test voltage at ind.Freq. for 1min | 2kV | |||
| Pollution degree | 2 | |||
| Thermo-magnetic release characteristic | B, C | |||
| Mechanical Features | Electrical life | 4,000 Cycles | ||
| Mechanical life | 10,000 Cycles | |||
| Contact position indicator | Yes | |||
| Protection degree | IP20 | |||
| Reference temperature for setting of thermal element | 30℃ | |||
| Ambient temperature (with daily average≤35℃) | -5℃~+40℃ | |||
| Storage temperature | -25℃~+70℃ | |||
| Installation | Terminal connection type | Cable/Pin-type busbar | ||
| Terminal size top/bottom for cable | 16mm2 18-5AWG | |||
| Terminal size top/bottom for busbar | 16mm2 18-5AWG | |||
| Tightening torque | 2.5Nm 22In-lbs | |||
| Mounting | On DIN rail EN60715(35mm) by means of fast clip device | |||
| Connection | Power supply from top | |||
| Tripping Current Range | Type | Tripping current I△/A | ||
| AC | 0.5I△n＜I△＜I△n | |||
| A | Lagging Angle | I△n＞0.01A | I△n≤0.01A | |
| 0° | 0.35I△n≤I△≤1.4I△n | 0.35I△n≤I△≤2I△n | ||
| 90° | 0.25I△n≤I△≤2I△n | 0.25I△n≤I△≤2I△n | ||
| 135° | 0.11I△n≤I△≤1.4I△n | 0.11I△n≤I△≤2I△n | ||
Characteristics Curves
|
Thermal Tripping |
Magnetic Tripping |
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|
Asper IEC60898 |
No tripping current |
Tripping current I2 |
Time Limits t |
Hold current I4 |
Trip current I5 |
Time Limits t |
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|
B Curve |
1.13×IN |
≥1h |
3×IN |
≥0.1s |
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|
1.45×IN |
＜1h |
5×IN |
＜0.1s |
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|
C Curve |
1.13×IN | ≥1h | 5×IN | ≥0.1s | ||||
| 1.45×IN | ＜1h |
10×IN |
＜0.1s | |||||
Circuit Diagram
Overall and Installation Dimension(mm)
