Abstract: A mounting rail for electrical components comprises a base having parallel upstanding flanges thereon each containing a plurality of apertures, one of the upstanding flanges having a return portion, and the apertures in the flanges being transversely aligned. A latch strip engages in a pair of the transversely aligned apertures in respective flanges, the latch strip having an out-turned retaining lip which is engageable with a mounting surface at one end of an electrical component when a mounting surface at the other end of the component engages the flange return portion of the upstanding flange.