Siemens EB extension box is used to lengthen load cell connecting cables. Load cells can be connected in 4-wire or 6-wire systems. The cable connection to the weighing module or to the JB junction box must always be implemented in 6-wire systems. The 7MH4 702-8AG or …-8AF SIWAREX connection cable is recommended for this purpose. If load cell cables are extended to a JB junction box, the M16 x 1.5 cable glands on the box must be replaced.

The EB extension box consists of a housing made of die-cast alumin um. It is protected against dust and spray water according to IP66. The cables are fed in through metric EMC cable glands and laid in spring-loaded terminals. A vibration-resistant and maintenance-free connection is achieved through the use of spring-loaded terminals. For connecting load cells in a 4-wire system, two bridge elements are inserted for feedback of the sense signal.