DC Surge Protector Suntree SUP2H8-PV T2 2P 800V DC 20–40kA

The Suntree SUP2H8-PV T2 2P 800V DC Surge Protection Device is designed to protect photovoltaic DC circuits and connected equipment against transient overvoltages and surge events. Developed specifically for solar PV applications, this Type II (T2) SPD provides an additional level of protection for PV installations, helping safeguard inverters and other connected DC components from damaging voltage surges.

The SUP2H8-PV is designed as a 2-pole DC surge protector for 800V DC photovoltaic applications. Depending on the selected version, the device is available with maximum discharge current ratings of 20kA, 40kA or 60kA. The provided technical data specifies a nominal discharge current of 7kA and a protection level (Up) of ≤2.8kV / 4.5kV, depending on the applicable configuration.

A major practical advantage is its plug-in modular construction. Individual protection modules can be replaced without replacing the complete surge protection device, simplifying servicing and reducing maintenance costs. Integrated visual indicators provide an immediate overview of module condition: green indicates normal protection status, while red indicates that the module requires replacement.

The design also incorporates a Flash Barrier intended to limit the propagation of electrical arcs. Combined disconnection and a short-circuit/shunting device provide safe electrical separation, helping reduce the risk of fire damage associated with DC arcing. The supplied installation information specifies that suitable electrical insulation should be used to maintain a minimum 10mm safety clearance between the PV SPD and other conductive parts inside the enclosure.

The SUP2H8-PV provides visual status indication and can also be equipped with an optional remote signalling contact, allowing the operating status of the surge protection device to be integrated into monitoring or alarm systems.

Efficient thermal dissipation helps reduce operating temperature, supporting stable performance in demanding photovoltaic environments. With a specified operating temperature range from -40°C to +85°C, the device is designed for a broad range of environmental conditions.

Test standards listed for the series include GB/T18802.1 and IEC 61643-31. Combining Type 2 surge protection, replaceable modules, visual status monitoring and dedicated DC safety features, the Suntree SUP2H8-PV T2 2P 800V DC SPD is a practical protection solution for residential, commercial and larger photovoltaic DC installations.