Fuse Switch Disconnector

In many cases, a blown fuse link simply needs to be replaced with a new one of the same size and rating. If the fuse link blows again, however, there may be a more serious problem with the electrical circuit.

If your fuse switch is not working properly, it is important to have a qualified electrician inspect the issue as soon as possible. Listed below are 10 common problems that can occur if your fuse switch isn’t working properly:

1 Blown Fuses:One of the most common problems that can occur if your fuse switchdisconnector isn’t working properly is blown fuses. This can occur for many reasons, such as an electrical overload or a short circuit. If you have a blown fuse link, it’s important to replace it with a new one of the same size and rating.

2 Tripped Circuit Breakers:Another common problem that can occur if your fuse switchdisconnector isn’t working properly is tripped circuit breakers. This happens when the flow of electricity becomes too much for the breaker to handle and it trips, shutting off the power to prevent an electrical fire. If your breaker keeps tripping, it’s important to have an electrician inspect the issue as there may be a problem with the wiring.

3 Dead Outlets:If you have an outlet that suddenly stops working, it could be because the fuse switchdisconnector isn’t working properly. This is usually caused by the tripped circuit breaker or blown fuse. If you have a dead outlet, you’ll need to have an electrician inspect the issue and replace the fuse or reset the breaker.

4 Flickering Lights:Flickering lights can be caused by many things, such as loose wiring, a bad connection, or a blown fuse. If the lights are flickering, it’s important to have an electrician inspect the issue as soon as possible.

5 Sporadic Power:If you’re having trouble with your power being sporadic, it could be because the fuse switch isn’t working properly. This can be triggered by many things, for example, loose wiring, a bad connection, or a blown fuse. If you’re having trouble with sporadic power, it’s important to have an electrician inspect the issue as soon as possible.

6 Shock Hazard:A shock hazard can happen if there is exposed wiring or a loose connection somewhere in the electrical system. If you suspect there may be a shock hazard, it’s important to have an electrician inspect the issue as soon as possible.

7 Fire Hazard:The most serious problem that can occur if your fuse switchdisconnector isn’t working properly is a fire hazard. This can happen if there is an electrical overload or a short circuit. If you suspect there may be a fire hazard, it’s important to have an electrician inspect the issue as soon as possible.

8 Carbon Monoxide Poisoning:Another serious problem that can occur if your fuse switchdisconnector isn’t working properly is carbon monoxide poisoning. This can happen if there is an electrical malfunction that causes carbon monoxide to build up in the home. If you suspect that there can be a carbon monoxide problem, it’s important to have an electrician inspect the issue as soon as possible.

9 Explosion Hazard:If your fuse switchdisconnector isn’t working properly, you may face an explosion hazard. This can happen if there is an electrical malfunction that causes a build-up of combustible gases. If you suspect there may be an explosion hazard, it’s important to have an electrician inspect the issue as soon as possible.

10 Electrocution Hazard:One of the most serious problems that can occur if your fuse switch disconnector isn’t working properly is an electrocution hazard. This can happen if there is an electrical malfunction that causes someone to come into contact with live electrical wires. If you suspect there can be an electrocution hazard, it’s important to have an electrician inspect the issue as soon as possible.

If you go through any of these issues, it’s important to have a qualified electrician inspect the issue as soon as possible. Ignoring these problems can lead to serious consequences, such as electrical fires, electrocutions, and explosions.

A fuse switch Disconnector is an electrical safety device that is used to protect circuits from overloads. The switch is connected in series with the circuit, and if the current flowing through the circuit exceeds the rated value of the switch, the switch will open, interrupting the flow of current and protecting the circuit from damage.

Fuse switches are often used in electrical panels to protect individual circuits. The rated value of the switch is typically chosen to be slightly higher than the maximum expected current flowing through the circuit so that the switch will open before the circuit is damaged by an overload.

Also, the rated value will be lower than the current which would cause damage to the switch itself, so that the switch will not be damaged by the overload.

Fuse switches are designed to be used once and then replaced so that they can continue to protect the circuit.

If a fuse disconnect switch opens, it indicates that there has been an overload on the circuit, and the switch should be replaced before the circuit is used again. Replacing a fuse switch is typically a simple matter of replacing the switch with a new one of the same rating but you should ensure you get the best quality ones. For this, you can consider fuse switches manufactured by GRLgroup. Email:[email protected]

GRL Fuse Switch Disconnector
	Rated Current	Rated Voltage	Usage
DNH1	16A-630A	AC400V/690V,DC500V	Power grid distribution panel box New energy system
DNH1G	160A-630A	AC400V/690V,DC1000V	Power grid distribution panel box New energy system
DNH7	16A-630A	AC400V/690V,DC500V	Power grid distribution panel box New energy system
DNH18	16A-630A	AC400V/690V,DC500V	1000-2000A High current cabinet
DNH9	160A	AC400V/500V/690V	New energy system

A fuse disconnect switch is an electrical device for safety that operates to provide over-current protection for an electrical circuit. Fuses are used in circuits with higher voltage and current levels than those used in semiconductor-based devices. Listed below are ten (10) common uses for fuse switches:

1. Home Appliances:

Many home appliances, such as ovens, clothes dryers, and air conditioners, use fuse disconnect switch to help protect against electrical fires. Most often, these devices are located in the home’s main electrical panel. Thus, it is important to have a working knowledge of how to reset them should an over-current situation occur. A fused disconnect switch will generally have a reset button or lever that can be pushed or pulled to restore power to the circuit.

2. Lighting:

Fuse switches are also used in lighting circuits to protect against overloading and short-circuiting. In many cases, these switches are located in the fixture itself. This makes them easy to reset should an over-current situation occur. When you have lighting that is controlled by a wall switch, the fused disconnect switch will usually be located in the switch box. You can identify a fuse disconnect switch by its round shape and smooth, curved edges. In case of an over-current situation, the switch will “blow,” or open, to interrupt the flow of electricity and prevent a fire.

3. Industrial Machinery:

Fuse switches are used in a variety of industrial machines, such as welding machines and machine tools, to help prevent damage from excessive currents. In industrial settings, fused disconnect switches are often located in the main electrical panel. As with home appliances and lighting, it is important to know how to reset a fuse switch disconnector should an over-current situation occur. You can save many hours of downtime by simply knowing how to reset the switch. Fuse switch helps to prevent any fire hazard in the industry and keeps the machines running for a longer period.

4. Vehicles:

Vehicles use fuse switches to help protect the electrical system from damage due to shorts or overloads. For example, if you have ever blown a fuse in your car, it was probably due to an electrical short or overload. Fused disconnect switches are typically located in the vehicle’s fuse box, which is usually located under the hood. In case of an over-current situation, the switch will “blow,” or open, to interrupt the flow of electricity and prevent a fire.

5. Aircraft:

Aircraft use fuse switches to help prevent fires caused by electrical problems. We all know that aircraft are subject to very strict safety regulations, so it is no surprise that fused disconnect switches are an important part of the electrical system. Fuse switches are typically located in the aircraft’s main electrical panel.

6. Medical Equipment:

Many types of medical equipment, such as x-ray machines and defibrillators, use fuse switches to help protect against electrical hazards. To offer the best possible protection, fuse switches used in medical equipment are often located in the main electrical panel. This ensures that the switch will trip and interrupt the flow of electricity if an over-current situation occurs.

7. Computers:

Computers use fuse switches to protect against power surges that could damage sensitive components. Suppose a lightning strike hit a power line near your home. The sudden surge of electricity could damage your computer’s motherboard, CPU, and other sensitive components. So, to protect your computer, a fuse switch is used in the main power supply.

8. Telecommunications Equipment:

Fuse switches are used in telecommunications equipment, such as telephone switchboards and cellular towers, to help prevent damage from power surges. The equipment is designed to withstand small power surges, but a large surge could damage sensitive components. To protect against this, fuse switches are used in the main power supply.

9. Appliances:

Many appliances, such as refrigerators and freezers, use fuse switches to help protect against electrical fires. This is because appliances often have electrical components that are sensitive to power surges. A fuse switch can help prevent a fire by interrupting the flow of electricity if an over-current situation occurs.

10. Power Strips:

Power strips often have fuse switches built in to help protect against overloading and short-circuiting. No matter how many devices you’ve plugged into a power strip, the fuse switch disconnector will only allow a particular amount of the current to flow. If the current exceeds the fuse’s rating, the switch will “blow,” or open, to interrupt the flow of electricity and prevent a fire.

Besides the locations and purposes mentioned above, fuse switch can also be found in solar photovoltaic systems and battery chargers. They play a key part in our day-to-day life. Nowadays, the development of fuse disconnect switch is rapid with the continuous maturity of the technology. And its applications will become more and more ubiquitous. GRLgroup manufactures the top-notch fuse switches that ensure your safety ultimately.

The best way to determine if you need a fuse switch disconnector in your home or office building is to consult with an experienced electrician. Electricians are trained to assess the electrical needs of a property and can give you advice on whether or not installing a fuse switch would be beneficial.

In some instances, a fuse switch may be required by local building codes. Therefore, it is best to seek advice from an electrician before making any decisions about your electrical system.

Fuse switches are electrical safety device that is designed to protect your home or office from a fire caused by an electrical overload.

If excessive current flows through the circuit, then the fuse will “blow,” interrupting the flow of electricity and preventing a potentially dangerous situation. Fuse switches are designed to make changing a fuse quick and easy, and they can be found in most homes and office buildings.

If you’re not sure if your home or office has a fuse switch, you can check your circuit breaker box. If there is a switch labeled “fuse” or “fuses,” then you have a fuse switch and you should familiarize yourself with its location in case of an emergency.

When we choose a fuse switch disconnector, we should pay attention to voltage, current, pole number, installation methods, wiring methods, etc.

1. Power grid distribution panel box is used in 100A-630A electrical power systems, DNH1 and DNH7 series fuse switch disconnectors are recommended.

2. The vertical type fuse switch disconnectors are widely used in the 1000-2000A high current cabinet, GRL DNH18 series switch are suitable.

3. The new energy system usually uses a DC circuit, GRL DNH1, DNH7 and DNH9 series can be selected for breaking protection.

4. In industrial control cabinets, DNH1 and DNH7 series are often used as main incoming switches.

The temperature rise test is one of the most important types test items for fuse switch disconnectors.

The conditions that affect the temperature rise are as follows:

• Material: GRL chooses better conductivity red copper which can ensure conductivity more effectively, reduce heating value and reduce temperature rise.
• Contact structure: Special design is adopted to make the contact have a larger cross-sectional area in order to reduce heating value.
• Shell structure: Reasonable heat dissipation hole design, it can lose heat and reduce temperature rise quickly.
• Installation: It is better to install the fuse switch disconnector at the lower position of the cabinet to better heat dissipation.

• DNH1G Fuse Switch Disconnector

GRL DNH1G Fuse Switch Disconnector enables safe manual connecting and disconnecting electrical circuits under load.Their main purpose is to protect electrical equipment against overload and short circuit by using fuse-links from size 00 to size 3.

 

• DNH1 Fuse Switch Disconnector

GRL DNH1 fuse switch disconnector can be operated with load and is suitable for rated current between 40A and 630A.The power input side can be the upper side and also can be the bottom side of the fuse switch disconnector. There are knife-edge entry and arc extinguishing devices.It can work with fuse monitor and can be used as a knife switch.

 

• DNH7 Fuse Switch Disconnector

DNH7 Horizontal fuse switch disconnector is a device for occasional manual connecting/disconnecting of loads and distribution boards. It can make, carry and break the specified rated current (including a defined overload). The fuse switch disconnector can  protect it’s branch electrical loads, disconnect all poles from the power supply under load safely .

 

• DNH9 Fuse Switch Disconnector

GRL DNH9 fuse switch disconnector ( LV Fuse Cut Out )   complies with the standard IEC 60947-3.

 

• DNH18 Fuse Switch Disconnector

GRL DNH18 vertical fuse switch disconnector has busbar type and fixed type. Busbar type fuse switch disconnector with 3 hanging terminals  and can hang on the busbar directly. The hanging terminals can be fixed on the switch in advance and installed integrally with switch efficiently and conveniently. It complies with the national standard GB/T 13539.2 and GB/T 14048.3 and the standard IEC 60947-1 and IEC 60947-3.

The DNH18 vertical fuse switch disconnector has two wiring modes, traditional bolt connection and terminal clamp connection.

• Fuseswitch disconnector has the characteristics of fuse short-circuit protection, overload protection, and good current limiting  performance. Its’ characteristic curve matches with the characteristic curve of the equipment best .
• The fuseswitch disconnector is different from other fuse combination electrical devices. It has an obvious disconnection point and can be operated with load. It conforms to the “Low Voltage Power Distribution Design Code” (GB50054-95) that isolation electrical devices should isolate its circuit from the live part also has the function of preventing misoperation.
• The structure is very flexible.The power input side can be both the upper side and the bottom side of the fuse switch disconnector. It is convenient to disassemble,and it is safe to open/close the switch or change the fuse, only take a few seconds. The safety protection level reaches IP20;
• The fuse switchdisconnector 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

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..

Founded in 2003, GRL is a professional company integrating R&D, production and sales of electrical components and accessories such as low-voltage bus system, fuse switch dieconnector&fuse link, vertical fuse switch disconnector and knife switch.

The products are widely used in low-voltage distribution systems and industrial control systems in power, construction, photovoltaic, petroleum, chemical, metallurgy, railway and other industry power control systems.

Our product sales network covers large and medium-sized cities across the country and is exported to more than 80 countries and regions such as Europe, America, Russia, Central Asia, the Middle East, Latin America, Africa and Oceania etc..

There are 18 professional international sales engineers and about 30 technical R & D engineers. Our well-trained sales engineers and technical engineers are here to help you!

We also have a large inventory, in case urgent demands.

There are more than 40 test equipment in GRL lab, such as temperature rise tester, mechanical life tester, salt spray test machine, switch calibration bench, Rockwell hardness tester and so on. GRL focus on quality control management. we provide qualified products to customer from all of the world.

We have professional sales team and after-sales team are online 24 hours, which respond quickly and provide help at any time.

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Tel: +86-577-62690055
Fax: +86-577-62702791
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E-mail:  [email protected]