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Product Overview
Environment of use 
Technical specifications 
Size structure 
Download informationⅠ，Overview of high-voltage AC circuit breaker
ARM6HU series moulded case circuit breakers are applicable to string photovoltaic power station systems. Their rated working voltage can be up to 1000V, and can be used in 500V and 800V systems.
Ⅱ，ARM6HU product highlights
1. Advanced and safe arc extinguishing system structure design;
2. Zero flashover can be achieved by installing the protective cover. Double insulation:
pole to pole connection and complete isolation of main circuit;The products are widely used in the field of new energy. AC MCCB: series inverter application (power station type): PV string is inverted by inverter DC/AC, and the output AC is boosted and connected to the grid after being converged by AC combiner box. AC combiner box and low-voltage side of box substation shall be equipped with AC circuit breaker, with working voltage of AC500V → AC800V. The operating voltage of direct grid connection mode is relatively low, generally less than AC400V.
In order to improve the insulation performance and short-circuit breaking safety of the product, the reinforced insulating base plate and zero flashover cover are specially made
3、 Green:
We strictly control the raw materials, process processing technology and auxiliary materials of products according to the requirements of EU ROHS 2.0 directive.
4、Safe and reliable: extremely high mechanical life and electrical life.
The mechanism components and release are designed and optimized on the M3 structure platform, ensuring the reliability and tripping accuracy. Mechanical life: 10000 times, electrical life: 2000 times
5、ARM6HU small ampere is characterized by high protection accuracy and long service life.
The mechanism components and release are designed and optimized on the M3 structure platform, ensuring the reliability and tripping accuracy. Mechanical life: 10000 times, electrical life: 2000 times
Ⅲ.Usage scenario of ARM6HU new energy high-voltage circuit breaker
IV.ARM6DC and ARM6HU patented technology design innovation
1.Large opening distance
2.Large capacity metal anti-dissociation grid
3.Narrow slit pressurized air blowing solution
Outer packaging information (dimensions Weight)
| Model number | Minimum order quantity | Product size mm （L*W*H） | Weight | Packing metho (wooden box/carton) | Number of boxes | Inner box size cm （L*W*H） | Outer box size cm （L*W*H） | Box weight （g） |
| ARM6HU-400-3300 | 50 | 257*150*106.9 |
| 18*19.5*17.5 | 5800 |
Accessories and Accessories
Ⅰ. Ambient air temperature of -5℃ ~ +40℃.
Ⅱ. The altitude of the installation site does not exceed 2000m.
Ⅲ. The relative humidity of the air at the installation site does not exceed 50% at a maximum temperature of +40℃, and can have a higher relative humidity at lower temperatures, for example, up to 90% at 20℃. Special measures should be taken for occasional condensation due to temperature changes.
Ⅳ. The pollution level is 3.
Ⅴ. The circuit breaker can withstand mechanical vibration with a frequency of 2Hz~13.2Hz, displacement of ±1mm and frequency of 13.2Hz~100Hz and acceleration of ±0.7g by IEC60947-2 test requirements.
Ⅵ. The installation category of the main circuit of the circuit breaker is Ⅲ, and the installation category of the remaining auxiliary circuits and control circuits is Ⅱ.
Ⅶ. The circuit breaker is suitable for electromagnetic environment A.
Ⅷ. The wet and hot band type (TH type) circuit breaker passes the test requirements of IEC60947-2, GB/T2423.18 and can withstand the effects of humid air, salt spray, oil mist and mold.
Ⅸ. The circuit breaker should be installed in a place where there is no danger of explosion and no conductive dust or sufficient corrosion of metal and destruction of insulation
Ⅹ. The circuit breaker should be installed in a place where there is no rain or snow intrusion.
Ⅺ. Storage conditions: the surrounding air temperature of -25 ℃ ~ +70 ℃.
| Model | Current shell frame | Rated current (In) | Poles | Ue | Icu | Ics | Ue | Icu | Ics | Ui | Uimp | Mechanical Endurance | Electrical safe lif |
| ARM6HU-400 | 400A | 225A、250A、315A、350A、400A | 3P | AC800V | 30 | 23 | AC1000V | 12 | 12 | 1140V | 8kV | 4000 | 1000 |
Model | Rated current (In) | Poles | Structure size | Dimensions (W*L*H1) | Dimensions (W*L*H2) |
ARM6HU-400 | 225A、250A、315A、350A、400A | 3P |
| 150*257*150 | 150*257*108 |
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