DC Fuse Price in Pakistan 2026 — Solar Protection Buyer's Guide

DC fuse prices in Pakistan in 2026 range from Rs. 180 for a 10A 1000V solar string fuse to Rs. 4,800+ for a 250A 1500V battery-bank protection fuse, with matching fuse holders adding Rs. 450 to Rs. 3,200. DC fuses are not interchangeable with AC fuses — they are physically and electrically built to interrupt the continuous-current arcs that DC circuits produce when they fault, which AC fuses cannot do safely. This guide lists current 2026 PKR prices for every common DC fuse rating used in Pakistani solar, battery, and low-voltage installations, explains the gPV / gG / aR designations on solar fuses, and shows how DC fuses fit alongside DC breakers and SPDs in a complete protection scheme. For DC breakers (the resettable alternative for some applications), see the DC breaker complete guide; for the broader solar protection layout, the solar DB box guide.

What Is a DC Fuse and Why You Cannot Use AC Fuses for DC

A DC fuse is a one-time protective device that interrupts the circuit when current exceeds its rating, designed specifically for direct-current circuits. The critical difference vs an AC fuse: when an AC circuit faults, the alternating waveform crosses zero 100 times a second (50 Hz × 2), which naturally helps extinguish the arc inside the fuse. DC has no zero crossing — the arc, once struck, will continue burning until the fuse element is far enough apart, or the fuse housing has enough sand/silica to absorb the energy. As a result, DC fuses use longer fuse elements, more silica filler, and are rated for the specific DC voltage they will interrupt (typically 600 V, 1000 V, or 1500 V DC). Using an AC fuse on DC at the same voltage rating can result in the fuse failing to interrupt — the arc continues, melts the holder, and starts a fire. Always use a DC-rated fuse for DC applications.

DC Fuse Price in Pakistan 2026 — Full Price Table

Below are 2026 PKR prices for CNC-supplied DC fuses across the most common Pakistani solar and battery applications. All units are IEC 60269-6 (gPV class) or IEC 60269-2 (gG class) compliant. Bulk discounts apply on 50+ units of one rating.

Browse live stock at our DC breaker collection (which carries DC fuses, fuse holders, and DC MCBs side-by-side). For complete solar bundles with fuses pre-included, those are pre-quoted by system size.

Understanding gPV / gG / aR — DC Fuse Class Codes

DC fuses are labelled with two-letter class codes that tell you what they protect and what they are tested for:

• gPV — General-purpose Photovoltaic. The standard for solar string and combiner-box use. Tested per IEC 60269-6 specifically for the long-duration low-fault-current behaviour of solar PV strings (where a fault may not produce massive current, just current slightly above rating that lasts hours). Use gPV for any solar string or sub-array protection.
• gG — General-purpose. Standard for general distribution circuits, transformer secondaries, motor branch circuits in DC. Tested per IEC 60269-2.
• aR — Semiconductor protection. Ultra-fast acting, used to protect IGBTs and SCRs in inverters and converters. Not used for general circuit protection.
• aM — Motor branch circuit. Allows starting inrush before tripping. Rare in DC; used for some DC motor applications.

For Pakistani solar installations: always specify gPV class fuses. Using a gG fuse on a solar string is the most common Pakistani solar installation mistake — a partial-shading fault can produce 1.2–1.5× rated current that a gG fuse will not interrupt within the safe time window.

DC Fuse Sizing for Solar Strings in Pakistan

The IEC 62548 sizing rule for solar string fuses:

Fuse rating = 1.5 × Module short-circuit current (Isc) at standard test conditions. The voltage rating must equal or exceed the string open-circuit voltage at the coldest expected ambient (which is higher than nameplate Voc).

DC Fuse Sizing for Battery Banks

Battery DC fuse sizing follows a different rule — protect the cable, not the load. The rule:

Battery fuse rating = 1.25 × maximum continuous discharge current. The voltage rating must exceed battery nominal voltage with a safety margin (use 60V DC fuses for 48V banks, 100V for 96V, etc.).

• 5 kWh 48V battery, 80A inverter: NH00 100A 500V DC — Rs. 1,200
• 10 kWh 48V battery, 150A inverter: NH00 200A 500V DC — Rs. 1,650
• 20 kWh 48V battery, 250A inverter: NH1 250A 690V DC — Rs. 2,200
• 30 kWh 96V battery, 320A inverter: NH2 400A 690V DC — Rs. 4,800

Note: many battery installations use a DC MCB instead of a fuse for resettability. See the DC breaker guide for the trade-offs.

DC Fuse vs DC Breaker — Which One to Use

Where DC Fuses Sit in the Solar Protection Stack

For a complete Pakistani residential or commercial solar installation, DC fuses sit alongside DC breakers, SPDs, and the inverter:

1. Per-string gPV fuse in each polarity (+ and −) at the combiner box — protects the string
2. DC SPD at the combiner — protects against lightning surges; see our SPD collection and the 1500V DC SPD explainer
3. DC breaker / isolator on the combiner output — for service isolation
4. Inverter with internal arc-fault and ground-fault detection
5. NH DC fuse on battery bank (if present) — protects against battery short-circuit fault current that can exceed 10,000 A
6. AC SPD + AC MCB + RCCB on inverter AC output — see the solar DB box guide for the full layout

DC Fuse Installation Tips from Pakistani Solar Installers

• Use DC-rated fuse holders. An AC fuse holder rated 230V AC may have only 60V DC rating — using one for a 1000V solar string can melt and arc.
• Fuse both polarities in the combiner box on systems where the array is not grounded (most modern transformerless inverters require ungrounded arrays). One fuse per string in the + leg AND one in the − leg.
• Match fuse current to module Isc × 1.5, not to the inverter's nominal current. Modules can produce up to 1.25× Isc on bright cold mornings — and a fault upstream means parallel strings can back-feed into the faulted string at currents that destroy the module if not interrupted.
• Replace blown fuses with same brand and class. A different brand at the same nominal rating can have very different I²t curves — affects coordination with other protection.
• Visual inspection annually. DC fuses on rooftops endure hot ambient (60+°C) plus UV. Discoloured holders or hazed fuse caps signal heat damage — replace before failure.
• Carry spares. Keep at least 2 spare gPV fuses per rating used in the installation. A blown string fuse takes the string offline until replaced — which can mean 25% generation loss for days if you wait for delivery.

How to Identify Counterfeit DC Fuses in Pakistan

1. IEC 60269-6 marking. Genuine gPV fuses carry the IEC standard number laser-etched on the body. Counterfeits use ink or skip it.
2. DC voltage rating. Genuine units explicitly state "1000 V DC" or "1500 V DC" on the side. AC-only fuses re-labelled "DC" by counterfeiters typically just say the AC voltage.
3. Weight. A genuine 14×51 mm 32A gPV fuse weighs ~32 g due to the silica filling. Counterfeits with hollow body weigh 18–22 g.
4. Datasheet matching. Genuine manufacturers provide I²t curves and datasheets. Counterfeit suppliers typically cannot produce these on request.
5. Buy from authorised channels. CNC's official store, Daraz CNC, or our listed dealers. Solar bazaar fuses at suspiciously low prices are almost always counterfeit.

Bulk and Project Pricing

• 10–49 fuses of one rating: 5–8% off list
• 50–199: 12–18% off, with combiner-box assembly available
• 200+ / EPC contractor accounts: 20–28% off, terms-based payment
• Pre-built combiner boxes (fuses + holders + SPD + DC breaker, ready to mount): negotiated as a kit

Frequently Asked Questions

What is the price of a 15A DC fuse in Pakistan?

A 10×38 mm gPV solar fuse rated 15A 1000V DC is Rs. 220 in 2026. Pair with a 1-pole DIN-rail holder at Rs. 450, or a 2-pole holder (for fusing both + and −) at Rs. 780.

What is the price of a 100A DC fuse in Pakistan?

For solar combiner use, a 22×58 mm gPV 100A 1500V DC fuse is Rs. 1,150. For battery-bank use, an NH00 100A 500V DC fuse is Rs. 1,200. They are not interchangeable — select by application.

Can I use an AC fuse on a DC solar string?

No. AC fuses depend on the AC current zero-crossing to extinguish the arc inside the fuse. DC has no zero-crossing — an AC fuse on DC will fail to interrupt, the arc continues, melts the holder, and starts a fire. Always use a DC-rated gPV class fuse for solar strings.

DC fuse or DC breaker — which one is better for solar?

Use gPV fuses on individual strings (cheaper, faster on shading faults), and a DC breaker on the combiner output (resettable, allows isolation for service). Battery banks: use NH DC fuses for short-circuit protection; DC breakers for service isolation.

What does gPV mean on a DC fuse?

gPV = General-purpose Photovoltaic. The fuse class specifically tested per IEC 60269-6 for solar PV string protection — designed to interrupt the long-duration low-fault-current that occurs in shaded or faulted PV strings, which a general-purpose gG fuse cannot reliably interrupt.

What size DC fuse for a 5 kW solar system?

For a typical 5 kW system using ~10 modules of 550W in 2 strings of 5: each string fuses at ~25 A (Isc ~13.8 A × 1.5 + safety). Use 10×38 gPV 25A 1000V fuses (Rs. 320 each, 4 fuses for both polarities of both strings = Rs. 1,280) plus a combiner-output DC breaker.

How long does a DC fuse last?

If never blown, a quality gPV fuse lasts 25+ years on a rooftop solar installation — matching the panel warranty period. Visual inspection annually for heat discoloration is recommended. Blown fuses must be replaced one-for-one (same brand, class, and rating).

Do you ship DC fuses nationwide in Pakistan?

Yes — same-day dispatch from Lahore for in-stock items, nationwide courier to Karachi, Islamabad, Rawalpindi, Faisalabad, Multan, Peshawar, Quetta, Sialkot, Gujranwala, Hyderabad. Cash on delivery available; bulk solar-installer accounts get terms-based payment.