The extension box EB is used to lengthen the connection cable of load cells. Load cells can be connected using 4-wire and 6-wire systems. The extension box EB has a housing made of diecast aluminum. The housing is sealed against penetration of dust and splashed water in accordance with IP66. The cables enter the casing via metric EMC cable glands and are connected to spring-mounted terminals. The spring-mounted system results in vibration-resistant, maintenance-free connections.