Solar isolator switches are crucial components of any solar PV system as they serve as a safety feature. They are designed to protect the system and the people who work with it by isolating the DC supply when maintenance or repair work is carried out. Without this safety feature, the risk of electrocution or damage to … Read more
Non-polarity DC Isolator Switch for Inverters Our bulk switches are specifically designed for the DC side disconnect in solar inverters. When combined with other components, onccy switches provide complete protection against over-voltage and overloading. Our switches are equipped with special instructions for arc extinguishing, ensuring reliability and a longer electrical life. We take pride in our … Read more
Solar PV technology has revolutionized the way we generate electricity. Rooftop photovoltaic systems offer a sustainable and environmentally friendly alternative to traditional energy sources. By harnessing the power of the sun, these systems not only provide clean power but also reduce carbon emissions and dependence on fossil fuels. However, to ensure the safe and efficient … Read more
A Residual Current Device (RCD), also known as a ground fault circuit interrupter (GFCI) in some regions, is an electrical safety device designed to quickly detect and interrupt electrical faults. Its primary function is to prevent electric shocks and reduce the risk of fires caused by faulty electrical equipment or wiring. The RCD constantly monitors … Read more
Surge Protection Devices (SPDs) are used to limit transient overvoltages and divert surge currents. They are primarily used in low-voltage power distribution and information systems for protection against lightning overvoltages, operational overvoltages, lightning electromagnetic pulses, and electromagnetic interference pulses. If protection against these overvoltages is required on the high-voltage side, lightning arresters are used. When the … Read more
Table of Contents What is a circuit breaker? A circuit breaker is a mechanical switch device that can connect, carry, and interrupt the current under normal circuit conditions. It can also connect, carry for a certain period, and interrupt the current under specified abnormal circuit conditions. It functions as a protector against short-circuits and overloads. Typically, … Read more
(1) Type A circuit breaker With a nominal current twice the rated current, it is seldom used, generally for semiconductor protection (fuses are typically employed in most cases). This so-called “multiples of current” refers to the impact current that the switch can withstand for a certain duration without tripping; its characteristic is to avoid the impact … Read more
The selection of circuit breakers should be based on specific usage conditions and select the category of use, rated working voltage, rated current, and the set current of the trip unit, etc. Refer to the protection characteristics curves provided by the product samples for selecting the protection characteristics, and it is necessary to verify the … Read more
The DC system of the substation provides power for relay protection, automatic safety devices, control signal circuits, emergency lighting, etc. This is the basic guarantee for the correct operation of relay protection, automatic devices, and circuit breakers. Currently, circuit breakers and fuses are the main protection devices widely used in the substation DC system. When … Read more
Miniature Circuit Breakers (MCB) are the most common switches in control circuits, primarily serving two functions: to switch circuits on and off and to protect circuits by tripping in the event of overcurrent or short circuits. DC Miniature Circuit Breakers (DC MCB) are a special category within miniature circuit breakers. They employ specialized arc extinguishing and … Read more