AC connection distribution box hermetic IP65 EMITER with surge limiter AC Dehn type 1+2, 40A 3-phase, RCD type A 63A/300mA EM-909_AC

Safety and protection in AC installations

The EMITER AC hermetic IP65 connection box is a comprehensive solution ensuring safety and reliability in alternating current installations. The device combines the functions of a surge arrester and a residual current device (RCD), creating an effective protective barrier for devices and users. This is particularly important in photovoltaic installations, where protection against overvoltages and leakage currents is crucial for long-term and safe operation.

Design and application

The connection box is designed for connection mounting on the AC side, most often near the inverter – both outdoors and indoors. The hermetic housing with an IP65 degree of protection guarantees resistance to weather conditions, dust and water, allowing installation in demanding environments. Inside the device there is a Dehn type 1+2 surge arrester, which protects against the effects of lightning strikes and overvoltages from the grid. Additionally, a type A residual current device (RCD) with a rated current of 63A and a sensitivity of 300mA provides protection against electric shock by quickly detecting and disconnecting circuits with leakage currents. The use of a three-phase overcurrent switch 40A allows for handling significant loads while providing effective protection against overloads and short circuits.

Key features and benefits

• High protection: The combination of a Dehn type 1+2 surge arrester and a type A RCD provides comprehensive protection against various electrical hazards.
• Hermetic IP65 housing: Ensures resistance to weather conditions, dust and water, enabling installation in various locations.
• Safety of use: The residual current device minimizes the risk of electric shock.
• Durability and reliability: Solid construction and high-quality components guarantee long-lasting and trouble-free operation of the device.
• Easy installation: The connection box is ready for mounting and integration with the existing electrical installation.
• Application in photovoltaics: It is ideal for use in photovoltaic installations as a protective element on the AC side of the inverter.

Installation and selection

The connection box should be installed by a qualified electrician in accordance with applicable regulations and standards. Attention should be paid to the correct connection of wires and ensuring adequate ventilation of the device. When selecting the connection box, consider the rated parameters of the installation, such as the maximum load current and the type of RCD required for a given application. It is also important to check compatibility with the inverter and other elements of the photovoltaic system. Remember to regularly inspect the technical condition of the connection box and surge arrester to ensure continuous protection of the electrical installation.