Jean Müller
DC Surge Protective Device Jean Müller C3947 Type 1+2 1000 V 1 MPPT
DC Surge Protective Device Jean Müller C3947 Type 1+2 1000 V 1 MPPT
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Businesses and non-Italian private customers: purchase with 22% VAT. The 10% rate is reserved for private customers resident in Italy — find out more.
Foreign companies entitled to 0% VAT: please write to info@litio.store.
Delivery in 10-20 daysProtection deviceDC sideJean Müller
DC Surge Protective Device Jean Müller C3947 Type 1+2 1000 V 1 MPPT
The Jean Müller C3947 (model DS60VGPV-1000) is a surge protective device (SPD) of the combined Type 1+2 class, specific to the DC side of photovoltaic systems. It protects one MPPT with a three-pole Y structure, which discharges the three PV+ / PV− / PE paths to earth, and works up to 1000 V DC (Ucpv), with a withstand of up to 1200 V DC.
It is installed in the DC combiner box, as close as possible to the inverter's string input or near the photovoltaic generator, and it is the device to adopt when the building or the system is fitted with lightning protection or exposed to direct lightning strikes: the Type 1 component discharges a lightning current Iimp of 12.5 kA per pole, i.e. 25 kA in total with a 10/350 µs waveform, while the Type 2 function limits induced surges, with an Imax of 20 kA on an 8/20 µs wave. The VG technology combines varistors and a spark gap to achieve low residual protection levels with no permanent leakage current. A red mechanical indicator shows which module needs replacing and a changeover remote signalling contact makes it possible to report the alarm at a distance, an essential function in unattended installations.
Key features
Type 1+2 for the DC sideA single device covers both lightning current discharge and the limitation of induced surges on the photovoltaic array.
Up to 1000 V DCUcpv of 1000 V DC with a withstand of 1200 V DC, compatible with 1000 V photovoltaic strings.
Iimp 12.5 kA per pole, 25 kA in totalLightning current on a 10/350 µs wave suited to installations equipped with lightning protection.
Y arrangement for one MPPTThe three-pole Y configuration simultaneously protects the PV+ to PE, PV− to PE and PV+ to PV− paths.
Local and remote signallingRed mechanical end-of-life module indicator and changeover contact rated 250 V/0.5 A AC or 30 V/2 A DC for remote signalling.
Wide temperature rangeOperation from -40 °C to +85 °C, with a self-extinguishing PEI enclosure rated UL94-V0.
Technical specifications
| Feature | Value |
|---|---|
| Product code | C3947 |
| Device type | Surge protective device (SPD) for photovoltaic DC, model DS60VGPV-1000 |
| System side | Direct current (DC) |
| Surge protective device (type) | Type 1+2 (class I+II) |
| MPPTs managed | 1 |
| Number of poles / phases | 3 poles, Y connection (PV+, PV−, PE) |
| Maximum PV voltage (Ucpv) | 1000 V CC |
| Maximum continuous operating voltage (Uc) | 1200 V CC |
| Lightning impulse current (Iimp 10/350 µs) | 12.5 kA per pole, 25 kA total |
| Maximum discharge current (Imax 8/20 µs) | 20 kA |
| Protection level (Up) | < 2.3 kV at 5 kA; < 2.5 kV at 12.5 kA; < 2.8 kV at In; < 3.7 kV at Imax |
| Response time | < 25 ns |
| Indication | Red mechanical indicator for a faulty module |
| Remote signalling contact | Changeover, max 250 V / 0.5 A AC or 30 V / 2 A DC |
| Signalling terminal cross-section | Max 1,5 mm² |
| Number of DIN modules | 4 |
| Protection rating | IP20 |
| Operating temperature | Da -40 °C a +85 °C |
| Enclosure material | Self-extinguishing PEI UL94-V0 |
| Mounting | 35 mm DIN rail |
| Dimensions | 95 × 84 × 76 mm |
| Weight | 0.41 kg |
| Standards | EN 61643-11 (PN-EN 61643-11) and EN 50539-11 (SPDs for photovoltaic systems) |
Documentation
PDFDatasheet C3947Official manufacturer documentInstallation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.