
Backup switch 1PN/3PN-63A Fronius
The Backup switch 1PN/3PN-63A is the component that manages emergency operation and separation from the grid: it keeps the essential loads supplied when the grid is down and brings the system back in parallel when it returns.
Using the manufacturer's original part avoids compatibility problems at commissioning and keeps the warranty on the unit it belongs to valid. The code in the table is the manufacturer's catalogue code — worth checking before you order.
Fronius has been designing and building in Austria since 1992: its PV range is known for active cooling, modular boards and a widely used in-warranty replacement service.
Key strengths
Technical specifications
| Feature | Value |
|---|---|
| Product code | 4,050,220 |
| Manufacturer | Fronius |
| Type | Backup switch 1PN/3PN-63A |
| Compatibility | Backup switch 1PN/3PN-63A |