Some common kinds of these switches exist. Air Break Switches are the most common—they open contacts in regular air. Group-Operated Switches are mechanically linked; they work all three phases at the same time. Load-Breaking Switches are a special type. They have arcing horns or chambers that let them stop small load currents, but they never stop fault currents.
Distribution disconnect switches are put in key spots in the network. For example, they isolate transformers, capacitor banks, or transmission lines. They’re also at the start of distribution feeders to section off parts of the system. Sometimes they’re used to bypass substation equipment.
You can only operate these switches when you’re sure the circuit is de-energized. Trying to open a switch while it’s carrying a load creates a dangerous arc. This arc can damage equipment and cause serious safety risks. So, safe operation of the Abimat disconnect switch always depends on working with upstream devices that stop current. You must follow IEEE and IEC standards too. These standards cover how the switches are designed, tested, and used—they make sure the system is safe and reliable.
