JHH-13 type mine intrinsically safe circuit with junction box 
 Intrinsically safe circuit with the junction box junction box junction box explosion 
 JHH-13 type mine intrinsically safe circuits are intrinsically safe junction box cable for fixed multi-pass junction box is based on the standard line Q/HX003-2007 production. Is intrinsically safe circuit wiring cable wires and sub-line devices, mainly for containing methane and coal dust and explosive mixture of the following Class Ⅱ B environment. It has the dust, moisture, compact, solid wire, wire and cable and so difficult to call off. 
 The junction box cable import and export management, wide coverage and other characteristics, the products of five rows terminals. Junction box 13 into the outlet bell of different sizes, suitable for HUYV series Mine communication cable and signal cable PUYV series of mining sub-connection, can only be used in a Certificate of Conformity of the security communication system for intrinsically safe circuits to extend or shorten the cable or line. 
 Main Specifications: 
 (1) Rated voltage 60V 
 (2) Rated current 3A 
 Root number 50 wire connections right. 
 Environmental conditions: 
 (1) Ambient temperature -10 ℃ - +40 ℃; 
 (2) Relative temperature: ≤ 95% (+25 ℃ pm); 
 (3) applies to non-violent vibration, shock, a splash of water, dust and gas explosion dangerous places. 
 Structural features: 
 1, high-strength box system made of gray cast iron. 
 2, all devices are sealed into the line of good, solid cable, wire and cable easy to call off. 
 3, JHH-13-type terminal block, 5 rows, in good general purpose terminal blocks, grounding screw box located outside the body. 
 4, the junction box can be placed on landing, can also be linked to place, fixed in the roadway, when used with a special tool to unscrew the supporting screws to remove the covers, around the axis of the connecting device is equipped with wiring, cables, through the bell introduction of terminal use terminal block, the entire structure design, high strength, good sealing performance, installation, easy access, suitable for harsh underground environment. 
 Please contact me: 
 QQ: 62 
 The company also operates: couplers, expanding broadcast telephone, industrial anti-noise telephone, cell phone explosion, HDB-2 Explosion-proof telephones, magnet-type telephones, speakers, explosion of connections around the pipe, threading box, low voltage cable connection box , mining intrinsically safe junction box circuits, high voltage cable boxes, cable boxes communication, DSB explosion-proof motor terminal box, terminal, explosion-proof latch, explosion-proof latch switch, high voltage cable connector, explosion-proof electric hoist button, separate type control button, the button switch, explosion proof fire alarm button, the button switches the safety circuits, relays, communication relays, electromagnetic relays, vacuum contactor, magnetic amplifiers, repeaters, sound and light combination of signal devices, RBI device, pull point devices, bells, bells batter, control transformers, high voltage fuses, detonators, pneumatic frame pillar drill, coal drill, bolt rig, rock drill, DTH drilling rigs and other mining machinery .