DEHN 900923 DCU 2 YPV 1100 2M 2S PV String Combiner Box with Surge Protection, IP65, 2 MPPT, 2 Strings per MPPT

PV string combiner box with integrated surge protection for photovoltaic systems, combining two MPPT inputs and two strings per MPPT in a UV-resistant IP65 enclosure. The DEHN DCU 2 YPV 1100 2M 2S offers a maximum operating voltage of 1100 V DC and a short-circuit current rating of 200 A per MPPT, making it suitable for large-scale solar installations.

Advantages

Pre-wired Y-connection circuit with SCI technology provides reliable overvoltage protection in both common and differential modes. Visual fault indication allows quick status checks without opening the enclosure. Screw terminals accept conductors up to 16 mm² solid or 10 mm² flexible, simplifying installation.

Suitable for

• Photovoltaic systems with two MPPT trackers and two strings per tracker
• Wall-mounted outdoor installations requiring IP65 protection
• Applications with DC operating voltage up to 1100 V

Key specifications

• Type 2 surge protective device according to EN 50539-11
• Nominal discharge current: 20 kA (8/20 µs) per pole
• Maximum discharge current: 40 kA (8/20 µs) per pole
• Voltage protection level: ≤ 4.0 kV
• Operating temperature range: -25 °C to +60 °C

Recommendations

For optimal performance, install the combiner box close to the PV strings and ensure proper grounding. Use cable glands suitable for the conductor cross-sections to maintain the IP65 rating.