The explosion-proof T-junction box is used for the connection between two heat trace cables in the explosion-proof area, and the length of the heating cable is increased or used in the same pipe with different heating cables of power and three-pronged tubes and other complex occasions. The explosion-proof brand "Exel1CT6Gb" is suitable for groups of explosive gas mixtures in the first and second areas of the factory after combining it with electric heating and heating. The housing is made of high-strength plastic.