DEHN EM-1366 DC PV combiner box IP66 1000V Type 2 SPD 11 string 11 MPPT

The DEHN EM-1366 DC is a high-quality, hermetic IP66 rated DC PV combiner box designed for outdoor photovoltaic systems. It integrates a Type 2 surge protection device (SPD) from Dehn, ensuring reliable overvoltage protection for up to 11 PV strings and 11 MPPT inputs. The robust UV-resistant polycarbonate enclosure and integrated DC disconnector make it ideal for harsh environmental conditions.

Advantages

Integrated Dehn Type 2 SPD with 20 kA nominal discharge current and 40 kA maximum discharge current for superior surge protection. Hermetic IP66 enclosure ensures dust-tight and water-jet protection, suitable for outdoor installation. Supports up to 11 PV string inputs and 11 MPPT outputs, providing flexibility for large solar arrays. Includes string overcurrent protection via integrated fuses and a DC disconnector switch for safe maintenance.

Suitable for

• Photovoltaic (PV) systems requiring DC combiner boxes
• Outdoor installations in harsh environments
• Large-scale solar arrays with multiple strings
• Systems needing integrated Type 2 surge protection

Key specifications

• Product Type: DC PV Combiner Box
• Number of PV String Inputs: 11
• Number of MPPT Outputs: 11
• Maximum System Voltage (Uoc): 1000 V DC
• Ingress Protection (IP) Rating: IP66
• Surge Protection Device (SPD): Integrated, Type 2
• SPD Manufacturer: Dehn
• SPD Max. Continuous Operating Voltage (Uc): 1000 V DC
• SPD Nominal Discharge Current (In): 20 kA
• SPD Max. Discharge Current (Imax): 40 kA
• String Overcurrent Protection: Integrated Fuses
• DC Disconnector Switch: Integrated
• Enclosure Material: UV-resistant Polycarbonate
• Connection Terminals: MC4 Compatible
• Mounting Type: Wall-mountable
• Application: Photovoltaic (PV) Systems
• Operating Environment: Outdoor, Harsh Conditions

Recommendations

For optimal performance, ensure proper grounding and follow local electrical codes. The integrated SPD provides protection against transient overvoltages; however, additional external SPDs may be required for complete system protection. Regular inspection of fuses and connections is recommended.