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The String Combiner Box (SCB) is specifically engineered for photovoltaic systems operating at up to 1500 V DC and supports connections for a maximum of 24 strings. This device features a one-sided fuse protection mechanism via a fuse holder and includes a DC isolator for enhanced safety.

Constructed from fiberglass-reinforced plastic, the box is suitable for outdoor installation in roofed areas, providing a degree of protection rated at IP65, and is classified under protection class II. The impact strength is rated at IK10, ensuring durability under challenging conditions.

The item has outer dimensions of 635 mm in width, 835 mm in height, and 300 mm in depth. It operates effectively within an ambient temperature range of -20 °C to 60 °C, with derating beginning at 45 °C. The system parameters include a maximum switching capacity of 315 A at 1500 V DC, with typical current per string rated at 9 A at up to 50 °C, and a maximum current of 12.5 A at up to 19 °C.

Cable entry is facilitated through a multi-cable gland, accommodating string input cable cross sections ranging from 4 mm² to 6 mm², and an output cable cross section of 300 mm². The sealing areas for string inputs range from 5 mm to 7 mm, while the output sealing area measures 16 mm to 28 mm. This product is identified by the Designation Code SOL-SC-24ST-1-15F1-00000131.