We have observed the supernova remnant 3C 396 in the microwave region using the Parkes 64-m telescope . Observations have been made at 8.4 GHz , 13.5 GHz , and 18.6 GHz and in polarisation at 21.5 GHz . We have used data from several other observatories , including previously unpublished observations performed by the Green Bank Telescope at 31.2 GHz , to investigate the nature of the microwave emission of 3C 396 . Results show a spectral energy distribution dominated by a single component power law emission with \alpha = ( -0.364 \pm 0.017 ) . Data do not favour the presence of anomalous microwave emission coming from the source . Polarised emission at 21.5 GHz is consistent with synchrotron-dominated emission . We present microwave maps and correlate them with infrared ( IR ) maps in order to characterise the interplay between thermal dust and microwave emission . IR vs. microwave TT plots reveal poor correlation between mid-infrared and microwave emission from the core of the source . On the other hand , a correlation is detected in the tail emission of the outer shell of 3C 396 , which could be ascribed to Galactic contamination .