Day: May 8, 2025

3.3kV Vacuum Contactor

What is a 3.3kV Vacuum Contactor? A 3.3kV vacuum contactor is an electrically controlled switch designed to repeatedly make or break medium voltage circuits, particularly in industrial motor control and capacitor switching applications. Utilizing a vacuum interrupter as the arc extinguishing medium, it ensures reliable switching with minimal contact erosion, arc flash risk, or environmental […]

11kV Vacuum Contactor

What is an 11kV Vacuum Contactor? An 11kV vacuum contactor is a type of medium-voltage switch used to repeatedly connect and disconnect electrical circuits under load. Unlike traditional contactors that use air or oil as arc-quenching mediums, vacuum contactors use a vacuum interrupter, which offers superior arc extinction capabilities and longer operational life. These contactors […]

Low Voltage Vacuum Contactor

What is a Low Voltage Vacuum Contactor? A low voltage vacuum contactor is an electrically controlled switch designed to make or break a power circuit under load. It uses a vacuum interrupter to extinguish arcs formed when contacts open, making it ideal for frequent operations in challenging environments. While most contactors are air-insulated, the vacuum […]

11kv vacuum circuit breaker

What is an 11kV Vacuum Circuit Breaker? An 11kV vacuum circuit breaker (VCB) is a type of electrical switchgear designed for medium voltage (MV) applications, primarily operating at 11,000 volts. It uses a vacuum as the arc-extinguishing medium, which allows it to interrupt high fault currents with exceptional reliability and minimal maintenance. The vacuum offers […]

Core Concept of a 15 kVA Three-Phase Transformer

A transformer is a passive electrical device that transfers energy between circuits through electromagnetic induction, enabling voltage step-up or step-down functions without a direct conductive path Wikipedia. A 15 kVA three-phase transformer is rated to handle up to 15 kilovolt-amperes of apparent power across three phases, making it suitable for small to medium-sized power distribution […]


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