Find replacement for DAH Solar DHN-54Z20/DG-520W

520 W TOPCon solar panel with 108 cells. Voc 40.7 V · Isc 15.94 A · TcVoc -0.25%/°C.

Original Panel

Select the panel you want to replace

Same technology onlyShow only panels with matching cell technology

Compatible Replacements

140 panels found · 3560 panels excluded

DAH Solar DHN-54Z16/DG-520W

520 W

TOPCon

100Exact match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.7 V	0.0%
Vmpp	34.7 V	34.7 V	0.0%
Isc	15.94 A	15.94 A	0.0%
Impp	14.99 A	14.99 A	0.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z16/DG(BW)-520W

520 W

TOPCon

100Exact match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.7 V	0.0%
Vmpp	34.7 V	34.7 V	0.0%
Isc	15.94 A	15.94 A	0.0%
Impp	14.99 A	14.99 A	0.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z20/DG(BB)-520W

520 W

TOPCon

100Exact match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.7 V	0.0%
Vmpp	34.7 V	34.7 V	0.0%
Isc	15.94 A	15.94 A	0.0%
Impp	14.99 A	14.99 A	0.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z20/DG(BW)-520W

520 W

TOPCon

100Exact match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.7 V	0.0%
Vmpp	34.7 V	34.7 V	0.0%
Isc	15.94 A	15.94 A	0.0%
Impp	14.99 A	14.99 A	0.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DAH Solar DHN-54Z16/DG(BB)-520W

520 W

TOPCon

100Exact match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.7 V	0.0%
Vmpp	34.7 V	34.7 V	0.0%
Isc	15.94 A	15.94 A	0.0%
Impp	14.99 A	14.99 A	0.0%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DMEGC DM515G12RT-B54HBW

515 W

TOPCon

95Exact match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.75 V	0.1%
Vmpp	34.7 V	34.61 V	0.3%
Isc	15.94 A	15.83 A	0.7%
Impp	14.99 A	14.88 A	0.7%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DMEGC GH515G12RT-B54HST

515 W

TOPCon

95Exact match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.75 V	0.1%
Vmpp	34.7 V	34.61 V	0.3%
Isc	15.94 A	15.83 A	0.7%
Impp	14.99 A	14.88 A	0.7%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DMEGC DM515G12RT-B54HBT

515 W

TOPCon

95Exact match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.75 V	0.1%
Vmpp	34.7 V	34.61 V	0.3%
Isc	15.94 A	15.83 A	0.7%
Impp	14.99 A	14.88 A	0.7%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DMEGC DM515G12RT-B54HBB

515 W

TOPCon

95Exact match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.75 V	0.1%
Vmpp	34.7 V	34.61 V	0.3%
Isc	15.94 A	15.83 A	0.7%
Impp	14.99 A	14.88 A	0.7%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DMEGC DM515G12RT-B54HSW

515 W

TOPCon

95Exact match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.75 V	0.1%
Vmpp	34.7 V	34.61 V	0.3%
Isc	15.94 A	15.83 A	0.7%
Impp	14.99 A	14.88 A	0.7%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

DMEGC DM520G12RT-B54HSW

520 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.88 V	0.4%
Vmpp	34.7 V	34.85 V	0.4%
Isc	15.94 A	15.88 A	0.4%
Impp	14.99 A	14.92 A	0.5%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

Suntech STP510S-H54-Nkh+

510 W

TOPCon

92Good match

Parameter	Original	Replacement	Deviation
Voc	40.7 V	40.72 V	0.0%
Vmpp	34.7 V	34.39 V	0.9%
Isc	15.94 A	15.73 A	1.3%
Impp	14.99 A	14.83 A	1.1%
TcVoc	-0.25 %/°C	-0.25 %/°C	±0.000 %/°C
TcPmax	-0.29 %/°C	-0.29 %/°C	±0.000 %/°C

String Compatibility Calculator

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Panel Matcher

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How the Algorithm Works

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Original Panel Specs

Voc

40.7 V

Vmpp

34.7 V

Isc

15.94 A

Impp

14.99 A

TcVoc

-0.25 %/°C

TcPmax

-0.29 %/°C

Pmax

520 W

Cells

108

Bifaciality

80%

Length

1962 mm

Width

1134 mm

Thickness

30 mm

Weight

26.6 kg

The DAH Solar DHN-54Z20/DG-520W is a 520 W solar panel. Finding a compatible replacement requires matching the original electrical characteristics — particularly Voc, Vmpp, Isc, and temperature coefficients — to ensure safe operation within the same string.

Use the form above to find panels that match these specifications. Then verify the replacement in the String Compatibility Calculator with your inverter.

Other models in this series

Power	Voc	Isc
490 W	39.5 V	15.58 A
495 W	39.7 V	15.64 A
500 W	39.9 V	15.7 A
505 W	40.1 V	15.76 A
510 W	40.3 V	15.82 A
515 W	40.5 V	15.88 A

Frequently Asked Questions

What specs must match when replacing the DAH Solar DHN-54Z20/DG-520W?

The most critical specs to match are: cell count (must be exactly 108), Voc close to 40.7 V (within ±5%), and temperature coefficient TcVoc close to -0.25%/°C. If Voc differs significantly, the string voltage at extreme temperatures may shift outside the inverter's MPPT range. The replacement finder above pre-screens all candidates by these criteria.

Can I use a higher wattage replacement for the DAH Solar DHN-54Z20/DG-520W?

A higher wattage panel usually has a higher Vmpp or Isc, which can affect string voltage and current. Small increases (up to 10–15%) are typically safe if the other electrical specs align. The replacement finder shows a compatibility score — 'Exact match' means the specs align closely. Always verify the replacement in the String Compatibility Calculator with your inverter before installation.

What happens if the replacement panel has different voltage specs?

If the replacement has a significantly different Voc or Vmpp, the string voltage may shift outside the inverter's MPPT range, reducing energy production or causing faults. This effect is amplified at temperature extremes: at low temperatures, voltage rises by the TcVoc coefficient. The replacement finder automatically accounts for this — it scores candidates by how closely the electrical specs match the original DAH Solar DHN-54Z20/DG-520W.