Combiner Box with OVP
IP65 Enclosure: The combiner box enclosures are typically made out of thermoset (GRP or polyester), or thermoplastic (polycarbonate) material, and come with IP65 protection. Enclosures come in different sizes, depending on the number of input strings and protection features implemented in the combiner box.
Fuse Protection for Strings: DC fuses rated from 2A to 25A from leading manufacturers are used in the combiner box to provide overcurrent protection. Fuses can be provided with or without indication.
Surge Protection Device : Surge Protection devices or SPD’s in the combiner/junction box protects electrical and electronic equipments from the power surges and voltage spikes. Surge protection devices divert the excess voltage and current from transient or surge into grounding wires. SPD’s used in the combiner boxes meet Type 2 regulations, and are typically rated between 600 to 1000V.
DC Disconnect/Isolation: An accessible disconnect/isolator switch is recommended for placement before the inverter to disconnect the DC side of the system when maintenance is being performed on the inverter.
Cable Glands/Connectors : The combiner/ array junction box is provided with IP 67 rated Cable Glands or MC 4 connectors at the input and output side to terminate the array strings into the box.