Pronto Energy 
KNRT-32M DC Fuse and Fuse Holder
The KNRT-32M gPV DC fuse and fuse holder provides overcurrent protection for photovoltaic circuits up to 1000V. Designed for solar combiner boxes, it reliably isolates faulty strings and protects PV modules and cables.
Applications & circuit protection
The KNRT-32M gPV fuse is specifically designed for photovoltaic DC circuits, protecting solar strings from reverse currents and faults. It mounts in combiner boxes and fuse holders.
- Photovoltaic string protection
- Combiner box fuse holders
- Solar DC distribution
- Protection of PV modules and cables
Construction & operating reliability
The KNRT-32M uses gPV rated fuse links with high-breaking DC capability, housed in a rugged fuse holder for reliable service in outdoor solar installations.
- gPV rated for photovoltaic DC circuits
- Rated up to {voltage} DC
- High-breaking DC fuse links
- Rugged fuse holder design
Technical Parameter
| Parameter | Value |
| Model | KNRT-32M / KNRT-1038 |
| Compliant with standards | IEC 60269-6 / GB/T 13539.6 |
| Application | Photovoltaic string and array protection against overload, short circuit and reverse current |
| Fuse class | gPV |
| Number of product poles | 1P |
| Rated working voltage | 1000 V DC |
| Rated working current | 2–32 A |
| Fuse-link size | 10 × 38 mm |
| Rated breaking capacity | 20 kA |
| Tested breaking capacity | 33 kA |
| Insulation resistance after operation | 428 MΩ |
| Flame-retardant grade | UL 94 V-0 |
| Installation method | 35 mm DIN rail |
Standards & certifications
The KNRT-32M is designed in accordance with IEC 60269-6 / GB/T 13539.6 and is available with TUV, CE certifications. Certification documentation can be provided according to project and destination-market requirements.
- Standard: IEC 60269-6 / GB/T 13539.6.
- Certifications: TUV, CE.
- Protection level: IP20 (where applicable).
OEM & B2B supply support
KORLEN supports distributors, OEM manufacturers, electrical contractors and project buyers with product selection, samples, technical documentation and commercial quotations.
If the KNRT-32M configuration does not match your project, send us the required specifications, quantity and destination market. Our team can help identify a suitable configuration.
- Samples available for product evaluation.
- Flexible quantities for project and B2B purchasing.
- OEM and ODM support for suitable projects.
- Technical documentation and certification support available.
Frequently Asked Questions
The KNRT-32M gPV fuse protects photovoltaic strings and DC circuits against overcurrent and reverse-current faults.
The KNRT-32M is rated for 1000V DC with fuse ratings of 2-32A.
It is installed in PV combiner boxes or fuse holders on the DC side of solar systems.
gPV fuses are specifically tested for photovoltaic DC circuits, ensuring reliable interruption of DC fault currents.