The Nx switchblade is described as which type of device?

• A. non-loadbreak
• B. arc-suppressing loadbreak
• C. fully automated
• D. grounding

Answer: (B)

When a live circuit is opened, an electrical arc forms between the opening contacts. Devices designed to interrupt current under load need to manage and suppress that arc so the switch doesn’t get damaged and the fault can be contained safely. An arc-suppressing loadbreak design combines the ability to break current while the circuit is energized (loadbreak) with features that quickly extinguish or suppress the arc during opening. That combination is exactly what the Nx switchblade is described as, making it suited for switching live circuits without fully de-energizing first and with reduced arcing energy.

This isn’t described as a non-loadbreak device, which would be unable to interrupt current on a live circuit. It isn’t inherently a fully automated device, since many switchblade configurations are manually or mechanically actuated rather than fully automatic. It also isn’t primarily a grounding device, which would focus on connecting the circuit to earth rather than breaking a live current. The arc-suppressing loadbreak designation captures both its switching capability under load and its arc-control features, which is why it’s the best description for the Nx switchblade.