Complex sentence: The IEC 60906-1 plugs are smaller than any other European plug with 16 A rating, being only slightly larger than the 2.5 A Europlug and providing much more reliable contact.
Split into simpler sentences: The IEC 60906-1 plugs are smaller than any other European plug with 16 A rating. The plugs are slightly larger than the Europlug and provide much more reliable contact.