Pronto Energy 
KNX5PV-H/B-2/1 PV DC Combiner Box
The KNX5PV-H/B-2/1 PV DC combiner box consolidates multiple solar string inputs into one output, protecting each string with fuses and providing surge protection up to 1000V. Its IP65 enclosure is built for outdoor photovoltaic installations.
Applications & circuit protection
The KNX5PV-H/B-2/1 combiner box simplifies photovoltaic system wiring by combining multiple DC string inputs into a single output, with fuse protection and optional surge protection.
- Photovoltaic string consolidation
- Solar combiner and distribution
- Outdoor PV installations
- Commercial and utility solar projects
Construction & operating reliability
The KNX5PV-H/B-2/1 features an IP65 weatherproof enclosure, string fuse holders, busbar assembly and optional DC SPD, with pre-wired terminals for fast installation.
- Multiple string inputs with fuse protection
- IP65 outdoor-rated enclosure
- Optional DC surge protection
- Pre-wired busbar for fast installation
Wiring Diagram
Technical Parameter
| Parameter | Value |
| Model | KNX5PV-H/B-2/1 |
| Compliant with standards | EN IEC 61439-1:2021; EN IEC 61439-2:2021 |
| Configuration | 2 in / 1 out |
| Rated / maximum voltage | 1000 V DC (500 V DC option) |
| Built-in protection | DC isolator or DC MCB + per-string gPV fuse + Type 2 DC SPD |
| Maximum short-circuit input | 16 A per string |
| Maximum output current | 32 A with isolator / 63 A with DC MCB |
| Enclosure material | Flame-retardant polycarbonate (PC) |
| Protection degree | IP65 |
| Impact resistance | IK09 |
| Dimensions (L × W × H) | 296 × 230 × 120 mm |
| Operating temperature | −20 °C to +60 °C |
| Relative humidity | Up to 99% RH |
| Maximum installation altitude | 2000 m |
| Installation method | Wall-mounted |
Standards & certifications
The KNX5PV-H/B-2/1 is designed in accordance with EN IEC 61439-1:2021; EN IEC 61439-2:2021 and is available with TUV, CE certifications. Certification documentation can be provided according to project and destination-market requirements.
- Standard: EN IEC 61439-1:2021; EN IEC 61439-2:2021.
- 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 KNX5PV-H/B-2/1 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 KNX5PV-H/B-2/1 combines multiple PV string inputs into a single output, with fuse protection for each string.
The KNX5PV-H/B-2/1 is rated for 1000V DC systems.
It is installed between the solar array and the inverter, typically outdoors or in a protected area.
Optional DC surge protective devices can be fitted to protect the system from lightning transients.