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OS
OS (Oil Switches) – High-Performance Oil-Immersed Switching Devices for Industrial Automation
Oil switches, commonly referred to as oil-immersed switches or oil circuit breakers, are robust electromechanical devices designed for medium-voltage and high-current applications. These switches utilize oil as both an arc-quenching medium and an insulat...
OS (Oil Switches) – High-Performance Oil-Immersed Switching Devices for Industrial Automation
Oil switches, commonly referred to as oil-immersed switches or oil circuit breakers, are robust electromechanical devices designed for medium-voltage and high-current applications. These switches utilize oil as both an arc-quenching medium and an insulating dielectric, ensuring reliable interruption of fault currents and safe isolation in demanding environments. Typical ratings include voltage classes up to 36 kV, current ratings from 100 A to 2000 A, and short-circuit breaking capacities up to 25 kA. They are available in configurations such as 3-pole (3P) or 4-pole (4P), with manual or motor-operated mechanisms. Key technical features include oil-filled tanks for arc extinction, auxiliary contacts for status indication, and mechanical interlocks for operator safety. In some regions, they are also known as oil-filled switches or oil-immersed disconnectors.
These devices are primarily deployed in electrical distribution networks, substations, and industrial power systems where high reliability and arc control are critical. Common applications include transformer protection, feeder switching, capacitor bank switching, and motor starting in heavy industries like mining, oil and gas, and manufacturing. They are also used in outdoor installations such as pole-mounted switchgear and pad-mounted transformers, often requiring IP54 or higher ingress protection for harsh environments. Oil switches are essential in automation systems for remote control and monitoring via SCADA interfaces.
Our catalog includes a wide range of oil switches, covering subcategories like oil-immersed load break switches, oil circuit breakers, and oil-immersed disconnectors. Key article codes include OS-12-630 (12 kV, 630 A load break switch), OS-24-1250 (24 kV, 1250 A circuit breaker), and OS-36-2000 (36 kV, 2000 A disconnector). These codes typically follow the pattern OS-[Voltage in kV]-[Current in A], with optional suffixes for pole count (e.g., -3P or -4P) and actuation type (e.g., -M for manual, -E for electric). Accessories like oil level indicators, pressure relief valves, and auxiliary contact blocks are also available.
Partnering with Electric Automation Network ensures access to genuine oil switches at competitive prices, with up to 65% discount compared to market rates. Our engineering team provides personalized technical support, including selection assistance, documentation, and compliance verification for global standards (IEC, ANSI). We offer express worldwide shipping, real-time pricing, and multilingual support on our portal. Whether for new installations or retrofits, we deliver reliability and efficiency.
All ratings we receive from the items we offer are real and verified. A small gesture, but a lot of value. That's why we thank you for that minute you invest in leaving us your opinion and qualification about the products, because it helps us to continue improving and to offer you a service of even higher quality.