Special Purpose Fuses

Photovoltaic Fuses

HelioProtection® HP6M Fuses - Photovoltaic

Mersen’s HP6M photovoltaic (PV) fuse series is designed specifically for the protection of PV string wiring for 600VDC residential and commercial rooftop photovoltaic systems. Its enhanced construction makes it ideal for continuous temperature and current cycling withstand adding to system longevity. The 600VDC rated HP6M, designed for low minimum breaking capacity capabilities of 1.35 times the fuse rated current value, allows for safe circuit interruption under typical low fault current conditions produced by PV arrays. Protect your rooftop PV system from unexpected ground faults and string faults using Mersen’s HelioProtection® fuse line.



  • Low fault current interrupting capability
  • Durable construction for enhanced system longevity
  • Temperature cycle withstand capability
  • Guaranteed operation at temperature extremes
  • Industries first UL Listed solution
  • Globally accepted


  • Volts (VDC) 600 VDC
  • Ampere Range (A) 1 to 30 A
  • I.R DC (kA) 10 kA
  • Class Photovoltaic
  • Mounting Clips
  • Connection Terminal Type Ferrule
  • Body Style Cylindrical
  • Body Material GMG
  • Materials Contact Tin-plated Copper
  • Standards UL Listed to standard 2579, File E333668
    CSA Component Certified C22.2
    IEC Certified to 60269-6
  • Application All photovoltaic applications
    PV string/array level protection
    Combiner box applications
    In-line PV module protection
    Battery charge controllers
  • ROHS Compliant Consult Technical Services
  • Lead Free Consult Technical Services
  • CE conformity Consult Technical Services
  • UL File Card E333668 JFGA.E333668
  • CSA File Card Class: 1422-30 File: 012636_0_000
    Class: 1422-03 File: 012636_0_000


  • HP6M1 - L1018565
  • HP6M10 - X1018575
  • HP6M12 - Y1018576
  • HP6M15 - Z1018610
  • HP6M2 - M1018566
  • HP6M20 - A1018578
  • HP6M25 - K1018610
  • HP6M3 - N1018567
  • HP6M30 - L1018611
  • HP6M4 - Q1018569
  • HP6M5 - R1018570
  • HP6M6 - S1018571
  • HP6M7 - T1018572
  • HP6M8 - V1018573


  • CAD Drawings

    • Drawing HP6M(1-30) :   PDF (41 KB)



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