| Brand | Xinyouxiang |
| Model NO. | PV Fuse DNR Series Battery Fuse Link Supplie |
| Rated normal current | 400A |
| Series | DNR |
The DNR PV fuse is a high-performance fuse engineered for DC protection in solar and energy storage applications. These bolt-mount fuses (class aR for semiconductor protection) are rated for up to AC 690V / DC 500V and currents from a few amps to 400A, making them ideal for protecting inverters, converters, battery systems, and other power electronics.
They provide fast short-circuit and backup protection for sensitive semiconductor devices in renewable energy systems – for example, frequency converters, rectifiers, inverters, and various power supplies – and batteries, motors, capacitors, and wiring. This means the DNR fuse can handle faults in on-grid or off-grid PV arrays, battery storage banks, EV drive systems, and motor drives.
| Specification | Details |
| Rated Voltage | AC 690 V / DC 500 V |
| Rated Current | 4 A – 400 A (series models cover this range) |
| Interrupt Capacity | AC 100 kA / DC 50 kA |
| Time Constant (DC) | 10–15 ms at 50 kA (L/R ≤ 15 ms) |
| Operating Temperature | –40 °C to +80 °C |
| Humidity (non-cond.) | ≤50% at 40 °C; ≤90% at 20 °C (non-condensing) |
| Protection Class | aR (for semiconductor devices) |
| Mounting | Bolted (M5, M6, or M10 screws) |
| Recommended Torque
|
M5: 4 N·m (DNR10 models) |
| M6: 8 N·m (DNR18 models) | |
| M10: 21 N·m (DNR30/DNR38 models) | |
| Flame Rating | UL94 V-0 (self-extinguishing) |
| Certifications | CCC |
| Standards | IEC 60269-4, GB/T 13539.4 |
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