[en] Highlights: • The [N(CH₃)₃H]CdCl₃ hybrid compound were prepared by conventional evaporation method. • Three-phase transitions at T₁ = 355 K, T₂ = 372 K and T₃ = 415 K. have been evidenced by the differential scanning calorimetry (DSC) and affirmed by the analysis of electric properties. • The variation of the ACconductivity as a function of frequency at different temperatures is found to obey Jonscher’s universal power law (developed). • The temperature dependence of (S) was investigated in order to understand the conduction mechanism in the different phases. The X-ray powder diffraction patterns shows that at room temperature [N(CH₃)₃H]CdCl₃ crystallizes in the orthorhombic system with the Pbnm space group. The analysis of the data revealed the existence of optical allowed direct transition mechanisms with the band gap energy equal to 5.3 eV. The temperature dependences of the real part of dielectric permittivity show a relaxation process at high temperature that can be explained by the reorientational motion of alkyl chains. The alternative current (AC) electrical conduction in compound is governed by three processes, which can be attributed to several models: the correlated barrier hopping (CBH) model in phases I and II, the non-overlapping small polaron tunneling (NSPT) model in phases III and IV.