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Approvals & Standards

  • IEC 60269-6
  • UL 2579
  • RoHS compliance

Key features & benefits

Mersen HP12NH photovoltaic (PV) fuse series was engineered and designed specifically for the protection of photovoltaic systems. Helio-Protection® HP12NH fuse links are designed for the protection of cables in a PV group of chains when a short circuit occurs in a panel (main fuse category). This HelioProtection® main fuse range enlarges our PV fuse links offering on a size having a worldwide acceptance. They are of the gPV type and comply with both IEC 60269-6 and UL 2579 PV standards.
They are also available with bolted type blades for direct mounting.

More specifications


  • All photovoltaic applications
  • Inverter DC input protection
  • Re-combiner applications (sub combiner, array combiner, master combiner)

Product Specifications

Item Number


Catalogue No.



Photovoltaic fuse gPV 1250VDC IEC 1250VDC UL Size 1XL 125A With Plain Blades For Clip  



Rated voltage DC UL

1250   V

Rated voltage DC IEC

1250   V

Ampere Rating

125   A



Fuse Size




Max. Rated Breaking Capacity DC

50 kA @ 1250 V, L/R = 1 ms  

Power Dissipation at Rated Current Value

29   W

Power Dissipation at Intermediate Current Value

11.5 W @ 0.7 In   W

Connection/Terminal Material

Silver-Plated Copper  

Connection/Terminal Type

Plain Blades  

Product Weight

0.959   lb

Product Width

1.56   in

Product Length

7.58   in

Product Height

2.54   in

Sell Pack Quantity

1   Each

Sell Pack Weight

0.959   lb

Sell Pack Width

3.54   in

Sell Pack Length

8.46   in

Sell Pack Height

3.35   in