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DC Isolator Switch
A clear visual break point allows you to confirm the circuit is fully isolated, ensuring absolute safety for all maintenance work.
Carefully selected materials and manufacturing processes ensure the product works steadily even in harsh environments.
Intuitive manual operation means you can quickly and accurately switch it without complex training.
Designed for versatile installation, perfectly suited for indoor distribution cabinets and outdoor substations.
At GRL, we place reliability and safety above all else in the manufacturing of our disconnectors. We use expert craftsmanship and strict quality control to ensure every product provides solid protection when it matters most.
Precision Engineering, Superior Mechanical Performance:
Every component of a GRL disconnector is precisely machined and assembled to ensure smooth, accurate, and reliable switching. Our unique mechanical interlocking design fundamentally eliminates the possibility of human error, providing multiple layers of protection for your equipment and personnel.
Rigorous Material Selection for Challenging Environments:
We only use high-quality insulating materials and conductive copper parts. These materials not only have excellent electrical properties but also effectively resist harsh conditions like high temperatures, humidity, and corrosion. The stable operation of GRL disconnectors is a solid foundation for your power system’s efficient and continuous performance.
Comprehensive Quality Control:
From the moment raw materials arrive to the final product shipment, we maintain a complete quality management system. Every single disconnector must pass strict electrical performance tests, mechanical life-cycle tests, and high-voltage withstand tests. This ensures our products meet or exceed industry standards, providing you with trustworthy and reliable protection.
Isolating switches combine the function of a switch and the establishment of an isolating switch to interrupt the load current to its rated normal current. It switches on and off under load conditions and provides safe isolation for any low voltage circuit, especially machine control circuits.
Disconnect switches ensure the safety of personnel and equipment. It supports users in creating a safe working environment and reducing the risk of electrical and mechanical accidents, especially during maintenance and repair work. It is suitable for a variety of applications such as machinery, power distribution, switchboards, motor control centers or photovoltaic installations.
Load switches are designed to switch current on or off under normally energized circuit conditions. Load switches typically have circuit “making” capacity but lack circuit “breaking” capacity as per IEC 60947-1 and 3. The load switch cannot be turned off, but it can be conducted.
HGL Load Switch Disconnector is suitable for LV power distribution systems with 50 Hz rated working voltage below AC 690V and rated working current up to AC 3150A. It is used for infrequent connecting and breaking for normal load and overload current, and be used as an isolator switch in the off state.
HGL load break switch can be wired at the front or at the back of the board. It has a variety of operation modes such as inside, outside, back, front, and at the side of the cabinet.
When choosing an isolatorswitch, be sure to determine the insulation voltage, working voltage and current of the system. Improper selection may cause the switch to malfunction and possibly injure personnel or equipment.
Isolator Switches have various alternative names. When shopping for these basic devices, you may encounter any of the following:
Like most professional electrical equipment, isolator switches are available in a variety of models, designed for different purposes. Some are for alternating current (AC) and some are for direct current (DC). They may be dedicated specifically to industrial use, with varying numbers of fuses and poles.
DNH8(HGL)/H Series switches up to 1600A are available to observe the on-off state of the copper contacts directly. Besides, it is only available for operation outside the cabinet.
Observe the internal structure and the on-off state of the contacts directly through a transparent upper cover.
DNH8(HGL)/C series mainly operate on the side.
Isolator switches are different from circuit breakers, although they have similar functions. A circuit breaker blocks the flow of current to the entire circuit, while a Isolator switch only cuts off part of the circuit.
A circuit breaker is a protective device. In the event of an overload or short circuit, they disconnect the system from the power source. They prevent further damage to equipment by interrupting power flow.
The isolator can only be used during unloading and the breaking capacity is not very frequent. The circuit breaker can be operated during loading and unloading, and the breaking capacity is relatively high.
You need to consider the type of isolator you need, eg know your power requirements. If you want a customized solution, this is not a problem as we offer various customization features.
Note that the current flowing through the wired supply chain is combined with the voltage to determine how much energy is flowing through your network.
Therefore, if you want to install a disconnect switch, you must size its contacts to ensure that it can accommodate the power being transmitted through its network.
Another thing to consider is to know about IEC and AS certificates. If an isolator manufacturer has these certificates, it means that the business has complied with international guidelines when manufacturing isolator products.
You will also need to consider the preferred location for installing the isolator switch and which installation method is appropriate for your application
GRL is a trusted manufacturer of electrical components and accessories across the globe. Our 30+ years of experience in the electrical industry allows us to manufacture isolators that comply with the latest standards.
Quality is the first goal in each of our workshops, as this will bring the best performance and safety to all our customers. Our commitment to quality increased brand awareness for your company.
In order to achieve our goal, GRL laboratory is equipped with more than 40 test equipments, such as temperature rise tester, mechanical life tester, salt spray tester, switch calibration bench, Rockwell hardness tester, etc. We aim to establish long-term partnerships with numerous companies.
We have a professional sales team and after-sales team online 24 hours a day, with quick response and assistance at any time.
Contact us to get your own login information!
An electrical switch equipped with a side-mounted operating handle, combining isolation and load current interruption capabilities.
Typical design: The handle is located on the side, controlling contact movement via a mechanical linkage.
Core functions: Safely isolate power sources (disconnect) and interrupt load currents (load break).
How does it differ from a standard Disconnector?
Standard Disconnector: Used solely for isolation; cannot operate under load (requires coordination with a circuit breaker).
Load Break Switch: Can interrupt rated load currents (e.g., motors, lighting circuits) without additional protective devices.
Is it suitable for DC systems?
What international certifications apply?
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