DC 1000V Fuse Holder YCF8 | Reliable Solar & Power Protection

DC fuse holder is a basic but important protection part in solar PV systems where string-level overcurrent protection is required. The CNC Electric Pakistan DC 1000V Fuse Holder RT18-32 YCF8 is built for DIN-rail mounting, takes replaceable 10×38 cartridge fuses, and gives reliable solar DC protection in compact boards. Listed at Rs.450, it is a practical choice for installers in Pakistan building solar strings that feed inverters for ACs, fridges, washing machines, water pumps, UPS systems, and other daily loads.

Quick Specs

Variant & Price

This listing is the holder only. If you need the 10×38 solar fuse cartridges themselves, buy them separately from the DC Fuse 15A / 20A / 32A page.

What This Product Does

A DC fuse or solar fuse protects a PV string from overcurrent by melting when fault current exceeds the safe range. This RT18-32 holder is the housing and DIN-rail base that carries that protection function. Buyers searching for pv fuse holder, solar string fuse, 1000v fuse holder, or rt18 fuse holder are usually building or upgrading a solar combiner arrangement where resettable breakers alone are not the preferred solution.

In simple terms, the holder keeps the cartridge fuse secure, accessible, and easy to replace inside a proper enclosure. A fault on the DC side can damage cables, connectors, and nearby devices before power even reaches the inverter — that is why correctly installed string fuses matter.

Selection Guide

Fuse selection must always be based on module Isc, string design, conductor rating, parallel string arrangement, and the protection strategy of the solar board.

Installation Guide

1. Isolate the system before work begins.
2. Mount the RT18-32 holder firmly on a DIN rail inside a solar DB or combiner box.
3. Insert the correctly sized 10×38 cartridge fuse (purchased separately).
4. Connect the incoming and outgoing DC conductors as per the string design and labelling.
5. Check torque, polarity, enclosure spacing, and cable dressing before energising.
6. Have a trained solar installer or licensed electrician test continuity and insulation before commissioning.

What This Product Does NOT Protect Against

This fuse holder provides DC string overcurrent protection only (when loaded with the correct cartridge). It does not protect against reverse polarity, arc faults, or lightning surges. For surge protection, use a DC SPD 1000V. It does not replace a DC isolator for switching and lockable isolation. It does not protect the AC side of the inverter output.

Related Products

• DC Fuse 15A / 20A / 32A — the cartridges this holder accepts
• DC 2P MCB 500V — Rs.1,600
• DC SPD 1000V
• DC Isolator

FAQs

Is the fuse included?
No. This listing is the holder only. Buy cartridges separately.

What is the price?
Rs.450 for the YCF8 DC 1000V fuse holder.

What does RT18-32 mean?
RT18-32 is the fuse holder family that accepts 10×38 cartridge fuses up to 32A.

Which cartridge should I buy?
Choose 15A, 20A, or 32A based on your string current, module data, cable size, and solar design calculations.

Does it include surge protection?
No. Use a dedicated DC SPD for that.

Can I use it on the AC side of my inverter?
No. This holder is for DC solar PV protection only.

For a complete solar board, browse DC circuit breakers, DC SPD, MC4 connectors, and DB boxes. Free delivery over Rs.10,000. WhatsApp 0326-1111376.