Square Cap Capacitor Rectangular box type. Self standing units. Modular construction with sheet metal enclosure. EHDLL : EPCOS heavy Duty Long Life capacitor for loads exhibiting some amount of non-linearity presence of harmonics, medium size industries. ESHDC : EPCOS Super Heavy Duty Capacitor for non-linear arduous and fluctuating loads with higher degree of harmonics.Explosion proof feature for individual cell using pressure sensitive mechanical interrupter. Simplified modular construction using hermitically sealed single phase basic capacitor cells.