EMITER EM-854N_DCAC Hermetic DC/AC Switchgear IP66, 5x PV String, 5x MPPT, 1000V DC Surge Arrester Type 1+2, 3-Phase AC Protection

The EMITER EM-854N_DCAC is a professional hermetic switchgear engineered specifically for complex photovoltaic installations. Housed in an IP66-rated enclosure, this unit provides comprehensive protection for both DC and AC sides of a solar power system. It is designed to manage up to 5 PV strings and 5 MPPT inputs, ensuring that high-voltage solar energy is handled safely and efficiently. With its robust construction and high-quality internal components, this switchgear serves as a critical safety hub for modern solar energy setups.

Advantages

This switchgear offers exceptional durability and safety due to its hermetic IP66 rating, which protects internal components from dust, moisture, and harsh weather conditions. By integrating both DC and AC protection in a single enclosure, it simplifies the installation process and reduces the need for multiple separate cabinets. The inclusion of high-performance Type 1+2 surge arresters on both the DC and AC sides provides superior protection against voltage spikes caused by atmospheric discharges or grid fluctuations. Furthermore, the modular design allows for clear monitoring of phase status, while the integrated socket provides convenient access to power for maintenance or testing equipment.

Suitable for

• Large-scale residential solar power systems
• Commercial photovoltaic installations with multiple MPPT inputs
• Systems requiring high-level surge protection for sensitive inverters
• Outdoor solar energy setups exposed to environmental elements

When it may not be suitable

This unit is designed for 3-phase AC systems and may not be compatible with smaller, single-phase residential solar installations. Additionally, if your solar array consists of fewer than 5 strings, this specific model might be over-specified for your needs, potentially leading to unnecessary costs compared to smaller, more compact switchgear solutions.

Key specifications

• Protection rating: IP66
• DC input capacity: 5 PV strings and 5 MPPT inputs
• DC surge protection: Type 1+2, 1000V
• AC surge protection: Type 1+2, 3-phase
• AC circuit breaker: 100A
• Integrated features: Phase signaling and power socket

How to use

Installation should be performed by a qualified electrician in accordance with local electrical codes and safety regulations. The unit should be mounted in a location that allows for proper cable routing and heat dissipation. Connect the PV strings to the designated DC inputs and link the AC output to the inverter and grid connection points. Ensure all cable glands are tightened correctly to maintain the IP66 hermetic seal. Once installed, verify the phase signaling lights to confirm correct grid connection before activating the system.

What to consider before purchase

• Verify that your inverter supports 5 MPPT inputs to fully utilize the unit's capacity
• Ensure the 100A circuit breaker rating matches your system's total power output
• Check the available space at your installation site for the physical dimensions of the enclosure
• Confirm that your local grid connection is 3-phase

Usage recommendations

Regularly inspect the surge arrester status indicators and the integrity of the enclosure seals to ensure continued protection. If a surge event occurs, check the status of the arresters and replace any cartridges that have reached their end-of-life status.