JHH-3( Terminal box for intrinsically safe circuits with three-way connectionsDetailed product description：

The JHH-3 (three-way) intrinsically safe circuit junction box can be matched with cables used in coal mine communication and monitoring systems, and can be used in gas, coal dust and explosion hazardous environments such as underground mining faces, tunnel chambers, and up and down mountains. It serves as a cable connection device for intrinsically safe communication and monitoring system equipment.

Explosion proof type: mining intrinsic safety type.
Explosion proof mark: Exib I.
Safety sign certificate number: MAF110302
Explosion proof certificate number: 2011-0528
Applicable outer diameter (diameter): 6-12

JHH-3 (three-way) intrinsically safe circuit junction box usage environment
a、 Environmental temperature -10 ℃ -+40 ℃;
b、 Relative humidity: ≤ 95%;
c、 Atmospheric pressure: 86-106KPa;
d、 There are explosive gases and coal dust and other explosive substances in the environment;
e、 There should be no corrosive gases in the environment;

Technical requirements for wire box for JHH-3 (three-way) intrinsic safety circuit
a、 Rated voltage 60V
b、 Rated current 1A
c、 Contact resistance less than 0.01 Ω
d、 The surface insulation resistance is less than 1 × 109 Ω