Friedhelm Loh

Friedhelm Loh's group of companies provides software, products and services to industries including switchgear manufacturing and utilities.

His largest company, Rittal, supplies electrical enclosures, climate-control technology, power-distribution gear and IT infrastructure.

He inherited the business from his father, Rudolf, who invented the first mass-produced enclosures for electrical control systems.

Today, the group has over 12,000 employees, 100 global subsidiaries and annual revenue of around $3 billion.