Properties
| Version | Photovoltaics, Combiner Box, 1100 V, 1 MPP, 2 Inputs / 1 Output per MPP, Surge protection II, WM4C |
| Order No. | 2791940000 |
| Type | PVN DC 2I 1O 1MPP SPD2R WM4 11 |
| GTIN (EAN) | 4064675072980 |
| Qty. | 1 items |
| Depth | 132 mm |
| Depth (inches) | 5.197 inch |
| Height | 234 mm |
| Height (inches) | 9.213 inch |
| Width | 200 mm |
| Width (inches) | 7.874 inch |
| Net weight | 1,630 g |
| Ambient temperature | -40 °C...+50 °C |
| Humidity | 5...95 %, no condensation |
| Approvals |
EN 61439-2
IEC 61439-2 |
| Time interval | 5 years |
| Current per Maximum Power Point, max. | 30 A |
| Rated DC current per connection |
|
| Rated short-term current resistance |
|
| Rated DC voltage | 1,100 V |
| Connection type string | Plug WM4C |
| Enclosure attachment | Via mounting foots |
| Impact resistance |
IK08 in accordance with IEC 62208
IK10 in accordance with IEC 62262 |
| Insulating material |
Polycarbonate
Polyester glass-fibre reinforced, Polycarbonate |
| Switch disconnector execution | no switch |
| Type of mounting |
Wall mounting
4 screws |
| Installation location | Protected outdoor area (Land and Sea) |
| Protection degree | IP65 |
| Amount of maximum power points | 1 MPP |
| DC Input + & - |
|
| Functional earth connector |
|
| Fuse type | Neither fuse cartridge nor holder |
| Max. number of DC inputs | per Maximum Power Point 2 inputs connected in parallel |
| Surge protection auxiliary contact |
|
| DC Output + & - |
|
| Max. number of DC outputs | per Maximum Power Point 1 output |
| Discharge current In (8/20 µs) | 20 kA |
| Discharge current, max. (8/20 µs) | 40 kA |
| Maximum continuous operating voltage DC UCPV mode +/-, -/PE, +/PE | 1,100 V |
| Protection level Up (+/-) | ≤ 3.8 kV |
| Protection level Up (+/PE) | ≤ 3.8 kV |
| Protection level Up (-/PE) | ≤ 3.8 kV |
| PV system voltage, max. Ucpv | 1,100 V |
| Requirements class | Type II |
| Short-circuit curent ISCPV | 11,000 A |
| Total discharge current Itotal ( 8/20µs) | 50 kA |
| Approval/Certificate/Document of Conformity | [PV Next Mini EU Declaration of Conformity](https://mdcop.weidmueller.com/mediadelivery/asset/900_249279) |
| Engineering Data |
[CAD data -- PV NEXT Mini WM4 C Step](https://mdcop.weidmueller.com/mediadelivery/asset/900_245170)
[CAD data -- STEP](https://mdcop.weidmueller.com/mediadelivery/asset/900_245586) [Application notes -- Schematic Diagram for PV Next Mini](https://mdcop.weidmueller.com/mediadelivery/asset/900_262407) |
| Technical Documentation |
[Customer drawing](https://mdcop.weidmueller.com/mediadelivery/asset/900_245174)
[2932700000_00_03-2023_DRILL-TEMP_PV-Next_20-20](https://mdcop.weidmueller.com/mediadelivery/asset/900_295795) |
| User Documentation |
[Manual PV Next String Combiner Box](https://mdcop.weidmueller.com/mediadelivery/asset/900_96571)
[MANUAL PV NEXT IT/ES/FR](https://mdcop.weidmueller.com/mediadelivery/asset/900_153695) [Instruction leaflet PV NEXT MINI DE/EN](https://mdcop.weidmueller.com/mediadelivery/asset/900_249281) [Instruction leaflet PV NEXT MINI](https://mdcop.weidmueller.com/mediadelivery/asset/900_284688) |
| White paper |
[Fact Sheet DE PV CB Wie man Gebäude gegen Blitzeinschläge schützt](https://mdcop.weidmueller.com/mediadelivery/asset/900_249825)
[Fact Sheet DE PV Wie man die Lebensdauer eines GAK verlängert](https://mdcop.weidmueller.com/mediadelivery/asset/900_249826) [Fact Sheet EN CB Combining PV strings](https://mdcop.weidmueller.com/mediadelivery/asset/900_290550) [Fact Sheet EN PV CB connection](https://mdcop.weidmueller.com/mediadelivery/asset/900_290551) [Fact Sheet EN PV Combiner Box earthing](https://mdcop.weidmueller.com/mediadelivery/asset/900_303983) [Fact Sheet DE PV Combiner Box Erdung](https://mdcop.weidmueller.com/mediadelivery/asset/900_303984) [Fact Sheet DE PV CB Wann Sicherungen zu installieren sind](https://mdcop.weidmueller.com/mediadelivery/asset/900_249827) [Fact Sheet DE CB PV NEXT](https://mdcop.weidmueller.com/mediadelivery/asset/900_249828) [Fact Sheet EN PV CB When DC fuses are mandatory to install](https://mdcop.weidmueller.com/mediadelivery/asset/900_249829) [Fact Sheet EN CB PV NEXT](https://mdcop.weidmueller.com/mediadelivery/asset/900_249830) [Fact Sheet EN PV How to protect buildings against lightning strikes](https://mdcop.weidmueller.com/mediadelivery/asset/900_249831) [Fact Sheet EN PV How to extend the life time of a Combiner Box](https://mdcop.weidmueller.com/mediadelivery/asset/900_249832) [Fact Sheet DE CB PV Strings kombinieren](https://mdcop.weidmueller.com/mediadelivery/asset/900_290541) [Fact Sheet DE PV CB Richtig verbinden](https://mdcop.weidmueller.com/mediadelivery/asset/900_290542) |
| Catalogues | [Catalogues in PDF-format](LINK/Catalog.html) |
| ETIM 6.0 | EC002928 |
| ETIM 7.0 | EC002928 |
| ETIM 8.0 | EC003857 |
| ETIM 9.0 | EC003857 |
| ECLASS 9.0 | 22-57-92-03 |
| ECLASS 9.1 | 22-57-02-90 |
| ECLASS 10.0 | 22-57-02-90 |
| ECLASS 11.0 | 22-57-02-92 |
| ECLASS 12.0 | 22-57-02-92 |
| ECLASS 13.0 | 22-57-02-92 |
| Long specification |
Combiner box for inverters with 1 MPP tracker, suitable for protecting the DC side of a photovoltaic system according to EN 51543-32. MPP1: Max. string voltage Uoc: 1100V Approval according to low voltage switchgear and controlgear IEC 61439-1:2011 and EN 61439-2:2011 |
| Approvals |  |
Accessories
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Item No.:2877850000Packaging unit:1 PC
Photovoltaics, Y-Connector Cable, 1x WM4 C Female, 2x MC4 Male, 6mm², 1500 V
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Item No.:2877860000Packaging unit:1 PC
Photovoltaics, Y-Connector Cable, 1x WM4 C Male, 2x MC4 Female, 6mm², 1500 V
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Item No.:2749850000Packaging unit:1 PC
Screwdriver, Blade width (B): 5.5 mm, Blade length: 125 mm, Blade thickness (A): 1 mm
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Item No.:2749810000Packaging unit:1 PC
Screwdriver, Blade width (B): 3.5 mm, Blade length: 100 mm, Blade thickness (A): 0.6 mm
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Item No.:9536040000Packaging unit:1 PC
FPC (polycarbonate empty enclosure), Mounting foot, Fixing lugs, Height: 40 mm, Width: 19 mm, Depth: 35.5 mm, Material: Polyamide, Light Grey
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Item No.:2749910000Packaging unit:1 PC
Screwdriver, Blade width (B): 3 mm, 150 mm, Blade thickness (A): 3
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Item No.:2659350000Packaging unit:100 PC
Cable ties, 4.5 x 290 mm, Polyamide 66, 220 N
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Is accessory of
Counterparts
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Item No.:1303450000Packaging unit:10 PC
Photovoltaics, Plug-in connector, PUSH IN connection, female
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Item No.:1303470000Packaging unit:200 PC
Photovoltaics, Plug-in connector, PUSH IN connection, female
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Item No.:1303500000Packaging unit:50 PC
Photovoltaics, Plug-in connector, PUSH IN connection, male
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Item No.:1422030000Packaging unit:1 PC
Photovoltaics, Plug-in connector, PUSH IN connection, male, female
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Item No.:1303510000Packaging unit:200 PC
Photovoltaics, Plug-in connector, PUSH IN connection, male
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Item No.:1303460000Packaging unit:50 PC
Photovoltaics, Plug-in connector, PUSH IN connection, female
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Item No.:1303490000Packaging unit:10 PC
Photovoltaics, Plug-in connector, PUSH IN connection, male
Spare parts
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Item No.:2530660000Packaging unit:9 PC
Surge voltage arrester, Low voltage, Accessories, Spare arrester