News

The VSY1-12 Indoor High-Voltage Vacuum Circuit Breaker represents the advanced design of a new generation of medium-voltage switchgear. Designed for 12kV distribution systems, it covers a rated current range from 630A to 2000A with a rated short-circuit breaking current of up to 31.5kA. The pro...

The Control and Protective Switching Device (CPS) innovatively integrates motor control and circuit protection functions into a single compact unit. The SJKCPS series is designed for AC380-400V/50-60Hz systems, offering an adjustable overload protection range from 0.4A to 125A, perfectly matchi...

Overcurrent protection is a fundamental scheme in power systems. Three-zone overcurrent protection is a sophisticated coordinated scheme comprising Instantaneous Overcurrent Protection (Zone 1), Time-Delayed Overcurrent Protection (Zone 2), and Definite-Time Overcurrent Protection (Zo...

The Miniature Circuit Breaker (MCB) is the system's "last line of defense." Its mission is to act immediately at all costs upon a fault. Therefore, it does not require, nor is it rated for, the "Short-Time Withstand Current (Icw)" parameter, which belongs to the "waiters" (Type B breakers). Dur...

Our SC(B)11 Series Resin-Insulated Dry-Type Transformers are manufactured with premium materials, advanced technology, and stringent quality control to ensure exceptional reliability and a long service life. Designed for critical applications in high-rises, commercial hubs, airports, tunnels, a...

In electrical switches, a “Pole” (P) refers to the number of independent circuit paths the switch can control or interrupt. One “pole” corresponds to one independent current-carrying path. For a Transfer Switch, its number of poles determines how many lines it switches s...

Short-time withstand current (Icw) refers to the ability of a circuit breaker to withstand a specified short-duration current (e.g., 0.05, 0.1, 0.25, 0.5, or 1 second) under defined voltage, short-circuit current, and power factor conditions without tripping. The rated short-time withstand curr...

The S13-M series represents a paradigm shift in transformer design. By adopting a hermetically sealed structure that eliminates the traditional conservator, it completely isolates the internal insulating oil from external oxygen and moisture. The innovative bellows tank wall automatically compe...

Imagine a tiny metal strip inside your breaker. When you plug in too many devices, excess current flows, just like overworking a muscle. This current heats up the "bimetallic strip." Made of two metals bonded together, they expand at different rates when heated, causing the strip to bend. This ...

The XGN15-12 is a type of high-voltage ring main unit (RMU), a crucial component in 10kV to 12kV electrical distribution networks. Its primary role is to receive and distribute electrical power reliably and safely. The heart of this unit is a Sulfur Hexafluoride (SF6) gas-insulated load switch,...

The HL30-100 Isolating Switch is now officially launched. Designed for terminal power distribution circuits with AC 50/60Hz and rated voltage up to 230V/400V, it serves as a main switch for terminal electrical appliances or for controlling motors, low-power appliances, and lighting equipment in...

A Frame Circuit Breaker, also known as an Air Circuit Breaker (ACB), is a core protective component in low-voltage distribution systems, responsible for power distribution and providing protection against overload, short-circuit, and under-voltage faults. The W1 series, as a typical representat...