Fuse holder

01

Match the holder to the fuse link and circuit

HIITIO's HCPV1U DIN-rail fuse holder takes IEC 10×38 mm fuses and UL Class CC and supplemental fuses, with ratings of 1,000 V DC for photovoltaic use and 600 V UL / 690 V IEC, 30 A (35 A maximum), and a rated breaking capacity of 30 kA DC for photovoltaic use; it cites IEC 60269-1, UL 4248-1 and UL 4248-19. [1]

Kuangya's square-body fuse bases for gPV fuse links are rated 1,000 V DC (KYPV-H0B to H3B) or 1,500 V DC (KYPV-H1XLB to H3XLB), with breaking capacity up to 50 kA when fitted with its gPV fuses, and refer to IEC 60269-6 and UL 248-19. Each base fits one fuse size — H0B for H0, H1B for H1 and so on — and Kuangya notes that electrical performance depends mainly on the installed fuse link, with the holder providing mechanical fit and safe mounting. [2] [3]

A PV supplier describes 1,000 V DC holders for 10×38 mm fuse links from 10 to 30 A with an LED indicator. [4] A vehicle-electrics supplier explains that fuse holders are either open (fuse clips, blocks, sockets and plug-on caps) or fully enclosed. [5]

Editorial note: the breaking capacity quoted for a holder applies with the named fuse links. Specify the holder and fuse as a matched set from the same system, and confirm the DC rating separately from any AC rating.

Give the supplier the fuse standard and size (for example 10×38 mm gPV, square-body H1, blade), circuit voltage (AC or DC), rated current and prospective fault current, number of poles, indicator need, mounting (DIN rail, panel, inline), conductor size and terminal type, enclosure temperature, approvals and quantity.

02

Check heat dissipation, mounting and touch safety

HIITIO states that the HCPV1U is suitable for fuse links with rated power dissipation up to 8 W, mounts on 35 mm DIN rail, is IP20 finger-safe in 1- and 2-pole versions with or without indication, has a UL94-V0 self-extinguishing housing, and accepts copper conductors of 4–25 mm² in box terminals. [1]

Kuangya's 1,500 V bases use silver-plated copper contacts, a flame-retardant housing and 35 mm DIN-rail or fixed panel mounting. [3]

Editorial calculation: a combiner box with 12 HCPV1U holders each carrying a fuse at its 8 W limit could add up to 96 W of heat inside the enclosure (12 × 8 W). Check the enclosure's temperature rise and the fuse maker's derating before filling every position. [1]

Editorial note: the holder's housing rating, pole count and terminal range are fixed at ordering; a holder that takes the right fuse but not the cable size or DIN-rail spacing of the panel will not fit.

03

Compare what suppliers offer

Suppliers linked to this page list fuse holders; each card links to the page reviewed.

The listings reviewed range from PV and energy-storage DC holders for 10×38 mm and square-body fuses to vehicle blade-fuse blocks, glass-fuse holders and stamped fuse clips; ask each for the fuse links the holder is tested with and its DC voltage and dissipation limits.

04

Trace what each part of the holder controls

This is a functional reference built from the sources cited; it is not one maker's specification.

05

Fill the specification fields with values for your circuit

A fuse holder quotation needs values for your circuit. The table explains each field, gives published values where a reviewed source states them, and says what to obtain from the supplier.

06

Send the fuse, circuit and panel data together

Paste it into your enquiry below or into an email to a maker, then replace every bracket.

Fuse: [standard; size; gPV, gG, blade]
Circuit: [AC or DC voltage; current; fault level]
Poles: [1; 2; multi-way]
Indicator: [yes; no]
Mounting: [DIN rail; panel; inline]
Terminals: [conductor size; type]
Environment: [enclosure temperature; IP]
Approvals: [IEC; UL]

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