String combiner box (SCB) - SOL-SC-24ST-1-15F-00003131

String combiner box for photovoltaic systems up to 1500 V DC for the connection of up to 24 strings. With two-sided fuse protection via fuse holder, DC isolators, and surge protection (T1/T2). Cable entry via multi-cable gland. Including 15 A fuse-links.

Product Details

The Solarline string combiner boxes (SCBs) are used in both small rooftop systems and large ground-mounted systems. Their functions include collecting and protecting strings and, if necessary, separating the panels from the rest of the system by means of a switch disconnector or fire service switch disconnector.

Product type String combiner box (SCB)
Installation location Outdoor installation, roofed area, no direct sunlight
Number of supported MPP trackers 1
Number of outputs 1
Insulation characteristics
Protection class II

System voltage 1500 V DC (Umax)
Switching capacity 315 A (1500 V DC)
Safety equipment
Surge protective device T1 / T2
Protection level Up ≤ 4.5 kV
Total discharge current Itotal (10/350) µs 12.5 kA
Total discharge current Itotal (8/20) µs 40 kA

Number of string inputs 24
Current per string Typ. 9 A (Inc, up to 50°C)
10 A (Inc, up to 45°C)
Current per string max. 12.5 A (Imax, up to 19°C)
String fuse 10:3 x 38 mm in scope of delivery 10:3 x 38 mm (in scope of delivery)

External dimensions
Width / Height / Depth 635 mm / 835 mm / 300 mm (Housing dimensions)

Material Housing Fiberglass-reinforced plastic
Impact strength IK10

Cable entry
Type of cable entry Cable gland
Cable cross section string input 4 mm² ... 6 mm²
Sealing area string input 5 mm ... 7 mm
Cable cross section output 300 mm²
Sealing area output 21 mm ... 35 mm
Cable cross section grounding 21 mm ... 35 mm
Sealing area grounding 6 mm ... 13 mm

Ambient conditions
Degree of protection IP65
Impact strength IK10
Ambient temperature (operation) -20 °C ... 60 °C (Derating starting at 45°C)

Standards/specifications IEC 61439-2

Item number 1154891
Packing unit 1 pc
Minimum order quantity 10 pc
Note Made to Order (non-returnable)
Product Key DTHAAA
GTIN 4063151156022
Weight per Piece (including packing) 30 kg
Weight per Piece (excluding packing) 30 kg
Customs tariff number 85372091
Country of origin DE


ECLASS-9.0 27142422
ECLASS-10.0.1 27142422
ECLASS-11.0 27142422


ETIM 7.0 EC000268


UNSPSC 21.0 39121116

Your advantages

Standard-compliant switchgear and controlgear assembly, thanks to use of DIN EN 61439
Application-oriented analysis and consultation
Use of the best connection technologies and suitable components
Durable and error-free operation, thanks to comprehensively tested solutions
Optimum positioning of surge protection
Large portfolio of string combiner boxes in stock