DNH18 Fuse Switch Disconnector
Zhejiang Wone IT Service Co., Ltd...
1yrs +
staff 1000+m² US$300000000+
Key attributes
| Brand | Switchgear parts |
| Model NO. | DNH18 Fuse Switch Disconnector |
| Rated normal current | 250A |
| Rated frequency | 50/60Hz |
| number of poles | 3P |
| Series | DNH18 |
Product descriptions from the supplier
Description
The components of the DNH18 Fuse Switch Disconnector
DNH18 vertical fuse switch disconnector is installed with a special hanging terminal and directly connected to the busbar. The hanging terminal can be fixed on the switch in advance and installed integrally with switch efficiently and conveniently. It comply with the national standard GB/T 13539.2 and GB/T 14048.3 and the International Electrotechnical Commission standard IEC 60947-1 and IEC 60947-3.
The DNH18 vertical fuse switch disconnector can provide a variety of wiring modes to meet your wiring needs in different situations.
Fuse switch disconnectors are widely used in power grids, industrial power control, new energy and other fields.
In power system, it is widely applied in feeder pillar, integrated distribution panels, low-voltage power distribution cabinets, capacitor compensation cabinets,etc.. In the field of industrial control, it is widely used in photovoltaic equipment, industrial electric furnaces, industrial control cabinets of automobile manufacturing and other industries. In new energy industry, it is generally applied in combiner boxes and grid-connected cabinets,etc..
The fuse switch disconnector not only is suitable for electrical professionals to manage and maintain the power distribution mains and power branch lines , but also for non-professional electrical personnel.Because people only can change the fuse after pulling the handle out and under off grid.
parameters
| DNH18-160 | DNH18-250 | DNH18-400 | DNH18-630 | ||||||||||||
| With fuse | Rated voltage Ue/V | AC400 | AC500 | AC690 | AC400 | AC500 | AC690 | AC400 | AC500 | AC690 | AC400 | AC500 | AC690 | ||
| Ratedcurrent Ie/A | 160 | 125 | 100 | 250 | 250 | 200 | 400 | 400 | 315 | 630 | 630 | 630 | |||
| Rated insulation voltageUi/V | 1000 | 1000 | 1000 | 1000 | |||||||||||
| Thermal currentIth/A | 160 | 125 | 100 | 250 | 250 | 200 | 400 | 400 | 315 | 630 | 500 | ||||
| Withstand voltageUimp/kV | 8 | 12 | 12 | 12 | |||||||||||
| Rated short-time withstand currentIq/kA | 50 | 100 | 100 | 50 | 100 | 100 | 50 | 100 | 100 | 50 | |||||
| Usage catagory | AC-23B | AC-23B | AC-22B | AC-23B | AC-22B | AC-21B | AC-23B | AC-22B | AC-21B | AC-23B | AC-22B | AC-21B | |||
| Electric endurance times | 200 | 200 | 200 | 200 | |||||||||||
| With copper link | Rated voltage (Ue/V)Ue/V | / | / | AC500 | / | / | AC500 | / | / | AC500 | / | ||||
| Rated currentIe/A | / | / | 250 | / | / | 400 | / | / | 630 | / | |||||
| Rated insulation voltageUi/V | / | 1000 | 1000 | 1000 | |||||||||||
| thermal currentIth/A | / | / | 250 | / | / | 400 | / | / | 630 | / | |||||
| Withstand voltageUimp/kV | / | 12 | 12 | 12 | |||||||||||
| Rated short-time withstand current Icw kA/1s | / | / | 12 | / | / | 12 | / | / | 12 | / | |||||
| Usage catagory | / | / | AC-23B | / | / | AC-23B | / | / | AC-23B | / | |||||
| electric life | / | 200 | 200 | 200 | |||||||||||
| The common parameters | Rated frequency Hz | / | 50/60 | 50/60 | 50/60 | ||||||||||
| Fuse link | Size (RT16/NT/NH)IEC 60269-2 GB/T 13539.2 | 00 | 1 | 2 | 3 | ||||||||||
| Operating current In/A | 160 | 125 | 100 | 250 | 250 | 200 | 400 | 400 | 315 | 630 | 630 | 500 | |||
| Power loss P/W | 12 | 12 | 12 | 18 | 23 | 32 | 28 | 34 | 45 | 40 | 48 | 60 | |||
| organization | Power P/W | 1400 | 1400 | 800 | 800 | 1400 | 800 | ||||||||
| The bus bar spacing is mm | 185 | 185 | 185 | 185 | |||||||||||
| Others | Switch open and close signal feedback (microswitch) | Can do | Can do | Can do | Can do | ||||||||||
| Electronic fuse monitor (EFM) | Can do | Can do | Can do | Can do | |||||||||||
| Level of protection (front) | Open | IP20 | IP20 | IP20 | IP20 | ||||||||||
| Colse | IP30 | IP30 | IP30 | IP30 | |||||||||||
Packing Data：
| Model（without fuse ） | Carton Size | Packing Quantity | Single/G.W.(kg) |
Unit/G.W.(kg) |
| DNH18-160/3L | 70*38*24 | 8 | 2.52 | 21.26 |
| DNH18-250/3L | 70*44*27 | 4 | 5.76 | 24.28 |
| DNH18-400/3L | 70*44*27 | 4 | 6.52 | 27.32 |
| DNH18-630/3L | 70*44*27 | 4 | 7.52 | 31.32 |
| DNH18-160/3S | 70*38*24 | 8 | 2.35 | 19.9 |
| DNH18-250/3S | 70*44*27 | 4 | 5.62 | 23.72 |
| DNH18-400/3S | 70*44*27 | 4 | 6.35 | 26.64 |
| DNH18-630/3S | 70*44*27 | 4 | 7.36 | 30.68 |
MV Switchgear Accessories
Zhejiang Wone IT Service Co., Ltd...
1yrs +
staff 1000+m² US$300000000+
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: Electrical fittings/Equipment Parts/Low Voltage Electrical Apparatus
Whole life care manager
Full lifecycle 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.
Related Products
Related Knowledges
-
Relay Protection Basics: Types of Transmission Line Faults and Fundamental Protection Schemes1. Types of Faults on Power LinesPhase-to-Phase Faults: Three-phase short circuit Two-phase short circuitGround Faults: Single-phase to ground fault Two-phase to ground fault Three-phase to ground fault2. Definition of Relay Protection DevicesWhen an abnormality or fault occurs in a component of a power system, relay protection devices are those that can quickly and selectively isolate the faulty or abnormal component from the system, ensuring the continued normal operation of the remaining healLeon09/05/2025 -
5 Common Transmission Line Faults and Effective Prevention Methods1. OverviewA transmission line fault is a sudden power interruption caused by various factors. To restore supply and prevent recurrence, operators must first locate the fault point, identify the type, determine the cause, and implement repairs.The most common faults include: Lightning strikes Ice buildup (icing) Wind deviation (wind sway) Bird-related issues Pollution flashover External damageUnderstanding these faults and their prevention is critical for grid reliability.2. Lightning Strike FauEdwiin09/05/2025 -
Strange Devices on Transmission Lines: 5 Little-Known Practical Functions（1）1 Aviation Warning SpheresAviation warning spheres, also known as reflective safety spheres, are used on overhead transmission lines near airports, especially on extra-high-voltage (above 220kV) lines and river-crossing transmission lines. Highly visible aviation marker spheres (aviation warning spheres) must be installed along the lines to provide warning signals.The aviation marker sphere (aviation warning sphere) has a diameter of ф=600mm. The sphere can be manufactured in various bright coloLeon09/04/2025 -
Transmission LineIn transmission lines, a "π" connection involves breaking the original line from Substation A to Substation B and inserting Substation C, forming a "π" configuration. After the "π" connection, the original single line is divided into two independent transmission lines. Following the "π" connection, Substations B and C may both be powered by Substation A (in this case, Substation C receives power via a feeder from Substation B's busbar, or possibly from another voltage point within Substation B);Encyclopedia09/04/2025 -
What are the principles of forced re-energization of transmission lines?Principles of Forced Re-energization of Transmission LinesRegulations for Forced Re-energization of Transmission Lines Correctly select the forced re-energization end of the line. If necessary, change the connection configuration before forced re-energization, taking into account the reduction of short-circuit capacity and its impact on grid stability. There must be a transformer with its neutral point directly grounded on the busbar at the forced re-energization end. Pay attention to the impactEdwiin09/04/2025 -
Analysis of Accident Handling in Transmission LinesAnalysis of Transmission Line Fault HandlingAs a fundamental component of the power grid, transmission lines are widely distributed and numerous, often exposed to diverse geographical and climatic conditions, making them highly susceptible to faults. Common causes include overvoltage, pollution flashover, insulation damage, tree encroachment, and external damage. Line tripping is one of the most frequent faults in power plant and substation operations, with fault types including single-phase-to-Leon09/04/2025
Related Solutions
Haven't found the right supplier yet? Let matching verified suppliers find you.
Get Quotation Now
