DNH50-50 DC Isolate Switch PV System Disconnection Concentrated Inverter Protection
Key attributes
| Brand | Switchgear parts |
| Model NO. | DNH50-50 DC Isolate Switch PV System Disconnection Concentrated Inverter Protection |
| Rated normal current | 50A |
| number of poles | 2P |
| Series | DNH50 |
Product descriptions from the supplier
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.
DC Isolate Switch Key Features
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.The suitable cabinets are mostly specialized cabinets for photovoltaic and energy storage fields. The specific models and adaptation details are as follows: QHWI-PVS series AC combiner box (such as QHWI-PVS4-AC, QHWI-PVS6-AC), GGD400KB photovoltaic grid connected cabinet, GSL-HV51200 high-voltage energy storage cabinet, HV48100 SE outdoor energy storage cabinet
| 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 | |||||||||||
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 1000m²
Total staff:
Highest Annual Export(usD): 300000000
Services
Business Type: Sales
Main Categories: Low Voltage Electrical Apparatus/Instrument meters/Production equipment/Tester/High Voltage Electrical Apparatus/Electrical fittings/Equipment Parts
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.
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