This is DC Distribution Box 4 in 4 out with 2 SPD 600 Vdc for double string 2 MPPT Voltage range between 160 to 600V of Inverter, DCDB is mainly used for DC Side protection.
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Specification

ABS Enclosure 380*280*130 transparent.
Merson fuse 15A & Fuse holder 32A.
Phonix/Merson SPD 600Vdc 2 No's.
Connectwell Terminal Block 6Sq.mm
Polycab DC Cable type-1, TUV Certified
Standard indicating sticker
PG7 Gland Reputed make