It was 50 years ago that the first designs by relay pioneer Wolfgang Gruner impressed specialists. Within a very short space of time, his name became a brand that secured itself a good position among premium relay providers. Today, Gruner is one of the last independent relay producers in the world as well as the leading provider of polarized bistable relays for energy management. Today Gruner products are even compulsorily prescribed by numerous users in the relay industry. This says a great deal about the construction quality as well as the overall quality of the series products, and underscores the difference between Gruner products and numerous plagiarisms that continually appear in the market. Intelligent testing systems for 100-percent checks parallel to production, lengthy perfection of identical design principles, and the integration of genuine innovations all ensure that the Gruner relay brand will continue to retain its quality advantage in the future