Installation and Operation Guide SOLECTRIA® PVI 25TL-208, PVI 50TL-480 and PVI 60TL-480
DOCR-071030-A (10/7/2022)
Page 47 of 131
Table 3-6 DC Fuse selection
25-50-60 KW
BRAND
15A
20A
25A
30A
Mersen
HP10M15
HP10M20
HP10M25
HP10M30
15A/1000V
20A/1000V
25A/1000V
30A/1000V
Bussmann
PV-15A10F
PV-20A10F
N/A
N/A
15A/1000V
20A/1000V
N/A
N/A
Sinofuse
RS308-PV3E15A RS308-PV3E20A
N/A
N/A
15A/1000V
20A/1000V
N/A
N/A
Table 3-6 shows the different models of fuses that are acceptable replacement fuses in the PVI 25TL-208, PVI 50TL-
480, and PVI 60TL-480 inverters wire box fuse holders. UL listed, 1000VDC, 15A or 20A, 10x38mm cylindrical, PV
fuses from the following manufacturers are recommended as replacement fuses when necessary: Mersen,
Bussmann, or Sinofuse. For fuse values of greater than 20A (25A or 30A), the 1000VDC Mersen HP10Mxx PV fuse
series are required.
The touch safe fuse holders and wirebox internal factory wiring are designed to accept 15A, 20A, 25A, or 30A rated
fuses. The larger rated fuses may be required for combined input strings; for example, when Y branch connectors
are used with DC field wiring to reduce PV source circuit home runs. Yaskawa Solectria Solar allows replacement of
the factory installed 20A fuses with appropriate ampere ratings, however Yaskawa Solectria Solar does not provide
nor stock these fuses.
NOTICE!
When installing replacement 25A or 30A fuses, these fuses may not be installed in adjacent fuse holders. An
empty or unused fuse holder must be positioned between each 25A/30A fuse within each MPPT.
Use of fuses from other manufacturers or incorrectly sized fuses can cause either equipment damage or create
an unsafe working condition. Any damage resulting from use of incompatible fuses is not covered by the
Yaskawa Solectria warranty
NOTICE!
String Length:
The recommended fuse values are configured based on the condition that the input strings are
the same (module type and length).
Temperature Rating
: The temperature rating of the fuse holder terminals is (90°C).
INFO
✔
Due to improved ground-fault protection requirements in PV systems, the 2017 version of the NEC allows for a
single overcurrent protection device in either the positive or negative polarity. If local codes or jurisdictions
