| Brand | Switchgear parts |
| Model NO. | DNH50-50 DC Isolate Switch PV System Disconnection Concentrated Inverter Protection |
| Rated normal current | 50A |
| number of poles | 4p |
| Series | DNH50 |
The DNH50-50 Series DC Isolate Switch is specifically engineered for DC circuit disconnection in PV and energy storage systems. Unlike conventional DC isolator switches, it features a patented arc-free mechanism, eliminating arc flash hazards during manual operation. This not only improves safety but also extends the lifespan of internal components.
Whether you’re integrating it into solar inverters, battery packs, or string combiner boxes, the DNH50-50 DC Isolate Switch provides dependable isolation for routine maintenance, emergency power-off, or fault handling.
Arc-Free Operation: Zero arc during switching, ensuring safety for operators and system components.
Wide Voltage Range: Available in 600V, 700V, 800V, 1200V, and 1500V DC versions.
Robust Design: Flame-retardant nylon casing (UL94 V-0 rated) offers superior thermal and environmental resistance.
Flexible Mounting: Supports both rail and screw installation, fitting seamlessly into various DC cabinet layouts.
Compact Form Factor: Ideal for space-limited PV inverters, combiner boxes, and battery energy storage cabinets.
| Main Technical Parameters | ||||||||||||
| DNH50-50 | ||||||||||||
| Frame Current (A) | 50 | |||||||||||
| Rated Thermal Current lth (A) | 50 | |||||||||||
| Insulation Voltage Ui (v) | 1500 | |||||||||||
| Rated impulse Withstand Voltage Uimp (kV) | 8 | |||||||||||
| DNH50-50 Rated Current (A) |
Rated Voltage DC (v) | 600 | 700 | 800 | 1000 | 1200 | 1500 | |||||
| DC-21B, DC-PV1 | 2 Layers in Series | 50 | 50 | 50 | 40 | 35 | 32 | |||||
| DC-PV2 | 2 Layers in Series | 18 | 18 | 18 | 15 | 13 | 12 | |||||
| DNH50-50H | ||||||||||||
| Frame Current (A) | 50 | |||||||||||
| Rated Thermal Current lth (A) | 50 | |||||||||||
| Insulation Voltage Ui (v) | 1500 | |||||||||||
| Rated impulse Withstand Voltage Uimp (kV) | 8 | |||||||||||
| DNH50-50 Rated Current (A) |
Rated Voltage DC (v) | 800 | 1000 | 1200 | 1500 | |||||||
| DC-21B, DC-PV1 | 4 Layers in Series | 50 | ||||||||||
| DC-PV2 | 4 Layers in Series | 45 | 40 | 32 | 25 | |||||||
| Rated short-time withstand current law (kA*1s) | 0.7 | |||||||||||
| Rated short-circuit-making capacity lcm (kA) | 1.5 | |||||||||||
| Mechanical life (cycles) | 9700 | |||||||||||
| Electrical life (cycles) | 300 | |||||||||||
| Product certification | CCC、CE | |||||||||||
| Operating torque (N*m) | 1.5 ～ 2.2 | |||||||||||
| Mounting method | Cabinet Door Installation | |||||||||||
| Protection rating | Whole Machine lP20 | |||||||||||
