Do you real know the secrect of ARXM3 series MCCB from Acereare China

十一月 07, 2022

Do you real know the secrect of ARXM3 series MCCB from Acereare China

First，ARM3 series of MCCB overview from Acereace China

ARXM3 series moulded case circuit breakers include thermal magnetic type, electronic type and leakage type circuit breakers, they have reinforced BMC base, BMC middle cover and nylon upper cover.

（2 covers, middle cover+upper cover）

ARXM3 series circuit breakers have five frame sizes of 125A, 250A, 400A, 630A and 800A, and the current ranges from 16A-800A.

ARXM3E series circuit breakers have five frame sizes of 125A, 250A, 400A, 630A and 800A, and the current ranges from 16A to 800A.

econd，ARXM3 highlights

The circuit breaker has overload, short circuit and undervoltage protection functions, and can protect lines and power equipment from damage.

A，ording to the rated ultimate short-circuit breaking capacity, the circuit breakers are classified into four types: C (economic type), L (standard type), M (medium breaking type) and H (high breaking type).

B，M3E accessories are modularized, safe and reliable, with small volume, high breaking capacity, short flashover, high vibration resistance, etc

C、he circuit breaker has passed the test requirements of GB/T2423.10 and GB/T2423.18, and can withstand the influence of humid air, salt mist, oil mist and mold

D、The neutral pole type of ARXM3-125~630 is A/B circuit breaker when it is of 4 poles specification, which can have a unique function of "overload alarm without tripping" to ensure the continuity of power supply and meet the requirements of Article 6.3.6 of GB50054.

E、It is required to withstand mechanical vibration with frequency of 2Hz~13.2Hz, displacement of ± 1mm, frequency of 13.2Hz~100Hz and acceleration of ± 0.7g;

Third，Meterial advantages of ARXM3 series MCCB

A、 heat shrinkable insulating materials

The nylon materials such as the upper cover of ARXM3 are halogen-free VO flame retardant, high and low temperature resistant, aging resistant high-quality plastics, brand: reinforced flame retardant nylon PA66

The products have longer electrical life and strength, better appearance and higher breaking capacity.

Engineering plastics are resistant to high and low temperatures, ultraviolet rays, aging resistance, good insulation strength, and good dimensional stability of parts to ensure that the product does not degrade performance in complex working environments;

B、alloy contact with high silver content: the silver content can reach 95%

High silver content, high conductivity, thermal conductivity, arc resistance, electric wear resistance,

Preparation of dynamic and static contact material standards and reliable process guarantee, improving the electrical life of circuit breaker by 50%

C、mechanism:

High quality high carbon steel materials, iron base materials of main iron parts (cold rolled steel 10 # steel) , all adopt A+ materials.

High quality low carbon cold rolled steel is used, and after QPQ salt bath composite treatment, the wear resistance, corrosion resistance and fatigue resistance of metal surface are greatly improved, and the strength, mechanical life and electrical life of parts are improved by more than 10%

D、 thermosetting insulating materials

The unique formula material is adopted, which has high strength, good arc resistance, strong insulation, high temperature resistance and good flame retardancy

E、 high sensitivity temperature sensor

High quality bimetallic element materials are used, and there is no need to reduce the capacity from -5℃ to 55℃

F、spring materials with longer temperature resistance and fatigue resistance (50% longer than ordinary springs)

Forth，Product structure of XM3 thermomagnetic circuit breaker