EMITER EM-1_DC 1000V DC String Protection Enclosure with Type 2 SPD and 2-Pole Disconnector, IP65, 1x PV String, 1x MPPT

Photovoltaic DC string protection enclosure with integrated surge protection and disconnection, engineered for single-string PV systems up to 1000 V DC. The EMITER EM-1_DC combines a 2-pole DC switch disconnector and a Type 2 surge protective device in a UV-stabilised polycarbonate housing rated IP65, ensuring reliable operation in harsh outdoor environments.

Advantages

Complete DC-side protection in one compact unit reduces installation time and component count. The IP65 hermetic enclosure shields internal components from dust, moisture, and UV exposure, extending service life. The integrated Dehn Type 2 SPD safeguards the inverter and PV modules against transient overvoltages, while the 2-pole disconnector allows safe isolation for maintenance.

Suitable for

• Residential and commercial PV installations with one string per MPPT
• Rooftop and ground-mounted systems requiring outdoor-rated protection
• Installations in regions with frequent lightning activity
• Retrofit projects needing combined disconnection and surge protection

Key specifications

• Max. PV system voltage: 1000 V DC
• Number of PV strings: 1; Number of MPPTs: 1
• Integrated 2-pole DC switch disconnector, rated 25 A
• Integrated Type 2 SPD (EN 50539-11), In 20 kA, Imax 40 kA per pole
• Protection degree: IP65; Enclosure: UV-stabilised polycarbonate
• Connection: MC4 connectors (input/output)
• Operating temperature: -25 °C to +70 °C
• Mounting: Wall mounting; Standards: EN 50539-11, IEC 61439-2

Recommendations

For optimal performance, install close to the PV array to minimise unprotected cable runs. Ensure proper earthing and follow local regulations for surge protection coordination. Regularly inspect the enclosure and SPD status indicators.