The performance of the composites is determined on the basis of the interface bonding of the filler and the polymer matrix. Particulate filled polymer composites are used extensively for their wide range of applications at low cost. In this study, the effect of the mica with different particle size and different filler concentration (10 to 50 weight percent) on the mechanical and electrical properties of the polyvinyl chloride (PVC) was investigated. The PVC composites of water ground mica were prepared by Haake Rheocord 9000 machine, with Rheomix 600 using rotor type roller blades. Mechanical properties such as stiffness, and Young’s modulus of the PVC mica composites were found increasing with increase in mica loading, whereas elongation at break and tensile strength was found to be decreasing with the mica loading. Dielectric strength and surface resistance were found increasing with increasing mica loading whereas there was no significant increase of arc resistance of the composites. Morphological studies revealed that there is good dispersion and wetting of the mica with PVC matrix. SEM micrographs of the composites were studied for finding the filler dispersion and fracture analysis of the test samples.