In a photovoltaic system, the modules are arranged in strings and fields depending on the type of inverter used, the total power and the technical characteristics of the modules. GEESYS offers a plug & play solution that accommodates over current protection devices, disconnectors and surge protective devices in one solar combiner box. Depending on the application, combiners are equipped with monitoring devices to measure current, voltage and temperature to ensure the availability of the strings and to maximize generation. The string combiner boxes form subsystems that can be standardized according to the number of strings, voltage and rated current. AJB or the Array Junction Box provides with an estimate of the amount of energy that can be used or withdrawn from that of the solar power plant. In case there is some fault on course of failure in DC side, DCDB/AJB is used for the purpose of protecting the system irrespective of it being Solar Panels or batteries. It is an integral and significant aspect of the SPV system for it is desirable that there is enough protection in DC side. In order to switch off the system while a fault occurs, there exists an Isolator/Breaker for immediately switching off the system. Also, there exists a meter that gives precise information regarding the current and voltage.