This is a brand new, unused Bussmann JJN400 JJN-400 Amp Fuse Class T 300 Volts NIB. It is a top-of-the-line product designed to meet your needs. With a maximum amperage of 400A and a voltage of 300vac, this fuse is perfect for use in a wide range of industrial and commercial applications.

This fuse is a single-pole device with a high level of durability and reliability. The Bussmann brand is known for its quality, and this product is no exception. Whether you are an electrician, contractor, or DIY enthusiast, this fuse is an excellent choice for your next project.