| ABL SURSUM has made a key contribution to the history of electrical installation. It all began in the Twenties, when the founder of ABL, Albert Büttner, developed the basic idea of the earthed plug and socket system known as SCHUKO (Continental Europe style), which is now one of the most commonly used systems in the world. SURSUM designed the first screw-in circuit breaker with electromagnetic tripping and became a leading manufacturer of circuit breakers. These were just two in a series of major developments that were to follow.
The merger of these two successful specialists in 1986 made it possible to supply a seamless range of products – all from the same supplier. Today ABL SURSUM is a very successful company, both nationally and internationally, with about 50 per cent of its turnover coming from exports. Innovative milestones on the road to today’s technology: 1925 1st screw-in circuit breaker 1926 SCHUKO patent 1932 1st motor protective circuit breaker 1935 1st circuit breaker 1966 1st miniature circuit breaker 1979 Industrial plug and socket system according to IEC 309 1989 MA motor protective circuit breaker 1993 DIN-rail panel products Miniature circuit breaker according to UL 1077 1998 New range of distribution boxes 1999 Miniature circuit breaker according to UL 508 2001 MS motor protective circuit breaker 2002 VDE and UL 508 certificated miniature circuit breaker 2004 Appliance connection box with screw-less clamps Socket outlets in exclusive design 2006 New generation of miniature circuit breakers Data sockets for Industrial Ethernet |