DNF1-3 Series single fuse holder NH3 Fuse link
Key attributes
| Brand | Switchgear parts |
| Model NO. | DNF1-3 Series single fuse holder NH3 Fuse link |
| Rated normal current | 630A |
| number of poles | 1P |
| Series | DNF1-3 |
Product descriptions from the supplier
DNF1-3 series fuse base, suitable for AC systems, with a rated voltage of 500V and a rated current of 630A, used for overload and short circuit protection of low-voltage complete equipment. Low voltage distribution cabinets suitable for various medium and high voltage flow scenarios, covering industrial general distribution, specialized protection and other types of cabinets. Specific adaptation information is as follows: GGD low voltage fixed switchgear, XL-21 power cabinet, MNS pull-out low voltage switchgear, JP-2 rural network reinforced comprehensive distribution box, etc
Order No.:DN56331
Model No.:DNF1-3
| Rated Current le In | 630A(500VAC,440VDC)/500A(690VAC) |
| Rated voltage Ue | 500VAC/690VAC/440VDC |
| Rated Insulation Voltage Ui | 690V |
| Rated Impulse Withstand Voltage Uimp | 6KV |
| Break Capacity(with Fuse link) | 120KA(500VAC)/50KA(690VAC)/100KA(440VDC) |
| Fuse link size | 3 |
| Feature | 1 Pole, with protective cover |
| Type | Fixed Type |
| Reference Standard | IEC 60269-1,IEC 60269-2,GB/T 13539.2 |
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.
Related Products
-
DNT5-R1J Semiconductor protection fuse
-
AR Fuses DNT-O1J Series Semiconductors Equipment Protection Fuses
-
DNESS2 Fuse for battery and battery system Protection
-
DNESS Energy Storage Fuses
-
DNESS5 Fuse for battery and battery system protection
-
Rn2 Type indoor high-voltage limit-current fuse, fusing performance
-
RN1 type indoor high-voltage current limiting fuse, melting characteristics
Related Knowledges
-
High Voltage Bushing Selection Standards for Power transformer1. Structure Forms and Classification of BushingsThe structure forms and classification of bushings are shown in the table below: Serial No. Classification Feature Category 1 Main insulation structure Capacitive Type Resin-impregnated paperOil-impregnated paper Non-capacitive Type Gas insulationLiquid insulationCasting resinComposite insulation 2 External Insulation Material PorcelainSilicone Rubber 3 Filling Material Between Capacitor Core and Exte12/20/2025 -
Large Power Transformer Installation & Handling Procedures Guide1. Mechanical Direct Towing of Large Power TransformersWhen large power transformers are transported using mechanical direct towing, the following work shall be properly completed:Investigate the structure, width, gradient, slope, inclination, turning angles, and load-bearing capacity of roads, bridges, culverts, ditches, etc. along the route; reinforce them when necessary.Survey overhead obstacles along the route such as power lines and communication lines.During loading, unloading, and transpo12/20/2025 -
5 Fault Diagnosis Techniques for Large Power TransformersTransformer Fault Diagnosis Methods1. Ratio Method for Dissolved Gas AnalysisFor most oil-immersed power transformers, certain combustible gases are produced in the transformer tank under thermal and electrical stress. The combustible gases dissolved in oil can be used to determine the thermal decomposition characteristics of the transformer oil-paper insulation system based on their specific gas content and ratios. This technology was first used for fault diagnosis in oil-immersed transformers.12/20/2025 -
17 Common Questions About Power Transformers1 Why must the transformer core be grounded?During normal operation of power transformers, the core must have one reliable ground connection. Without grounding, a floating voltage between the core and ground would cause intermittent breakdown discharge. Single-point grounding eliminates the possibility of floating potential in the core. However, when two or more grounding points exist, uneven potentials between core sections create circulating currents between grounding points, causing multi-poi12/20/2025 -
Intelligent Grounding Transformers for Island Grid Support1. Project BackgroundDistributed photovoltaic (PV) and energy storage projects are developing rapidly across Vietnam and Southeast Asia, yet face significant challenges:1.1 Grid Instability:Vietnam's power grid experiences frequent fluctuations (particularly in northern industrial zones). In 2023, coal power shortages triggered large-scale blackouts, resulting in daily losses exceeding USD 5 million. Traditional PV systems lack effective neutral grounding management capabilities, making equipmen12/18/2025 -
Commissioning Test Procedures for Oil-Immersed Power TransformersTransformer Testing Procedures and Requirements1. Non-Porcelain Bushing Tests1.1 Insulation ResistanceSuspend the bushing vertically using a crane or support frame. Measure the insulation resistance between the terminal and the tap/french using a 2500V megohmmeter. The measured values should not significantly deviate from factory values under similar environmental conditions. For capacitive-type bushings rated 66kV and above with tap bushings, measure the insulation resistance between the "small12/17/2025
Haven't found the right supplier yet? Let matching verified suppliers find you.
Get Quotation Now
Send inquiry
Download
Get the IEE Business Application
Use the IEE-Business app to find equipment, obtain solutions, connect with experts, and participate in industry collaboration anytime, anywhere—fully supporting the development of your power projects and business.
