Explosion-proof distribution boxaccording toexplosionEnvironmentdivided intoGasExplosion-proof distribution box And Dust explosion-proof distribution box，GasExplosion-proof distribution box And FineClassIIA、IIB And IICThreeProductionExplosion-proof Rating，InvincibleSametype的Explosion-proof distribution boxallWithdetailed的Technical Requirements，EnhancedCertificateAfter-salesAttached withh的Inspection ReportdetailedColumnBright了Technical Specifications And InspectionProject，needOneOneintroduction。

　　IIBExplosion-proof distribution boxTechnical Requirements:

　　Explosion-proof RatingForExde IIB T4 Or Exd IIB T4、ExdeIIBT6,ShouldExplosion-proof distribution boxForFlameproof、Increased Safety Typestructure，Enclosure MaterialForMetallurgyMetalAluminum Or Stainless Steel Or CarbonSteel Plate，MostSmallWallThickFor6.0mm。The explosion-proof chamber houses electrical components such as circuit breakers, relays, and instruments, while the increased-safety chamber houses terminal blocks and independently explosion-proof certified signal lights and push buttons. The entry devices use compression nut type joints with rubber sealing rings. The wiring connections between the increased-safety chamber and the explosion-proof chamber are sealed with epoxy resin, with a sealing length of no less than 20mm. When there is only a separate explosion-proof chamber without an increased-safety chamber, the cable entry and exit points of the explosion-proof chamber must be equipped with explosion-proof packing glands.For the structural part, the nameplate, grounding, and markings comply with explosion-proof electrical standards, and the gaps of the explosion-proof joint surfaces meet the requirements of GB3836.2. The enclosure shows no damage after pressure testing and overpressure testing. Continuous operation at 1.1 times the rated current until temperature stabilizes, with surface temperatures of the housing, sealing rings, explosion-proof lamp buttons, and terminals not exceeding 65°C. The enclosure protection rating is not lower than IP54 or IP65.

　　IICExplosion-proof distribution boxTechnical Requirements:

　　Explosion-proof RatingForExde IIC T4 Or ExdeIICT6、ExdIICT4,ShouldExplosion-proof distribution boxForFlameproof、Increased Safety Typestructure Or Flameproof TypedirectlyCable EntryTypestructure，FlameproofCavityadoptSpigotScrewThreadFlangeDisc，EnclosureExplosion-proof RatingIP65，OtherTechnical Requirements And IIBExplosion-proof distribution boxOneCausing。

　　Dust explosion-proof distribution boxTechnical Requirements:

　　Explosion-proof RatingForExtDA21TIP65T130℃，ShouldExplosion-proof distribution boxForFlameproof Typestructure，OverseasDescribeMaterialForMetallurgyMetalSteel Or Aluminum Or Stainless Steel，based onGB3836.1、GB3836.2、GB12476.1、GB12476.5explosion-proofStandardProduction，HousingVariousStructureOverallExternalAllWith"O"TypeRing，meetDust Explosion-proofstructurerequirements。The enclosure meets the level 6 dust test and level 5 water test, with a protection rating of IP65. It has no leakage under 1.2MPa static pressure test, and no damage affecting the explosion-proof type.。The flameproof enclosure has passed the internal ignition non-transmission test, and the introduction devices and housing have passed the impact resistance test.。

The general technical requirements for explosion-proof distribution boxes are based on the explosion-proof electrical standard GB3836. Products that do not meet the technical requirements will not achieve the explosion-proof effect. When purchasing explosion-proof distribution boxes, it is necessary to carefully review the production drawings before confirmation.。