The JJS-70 is part of Bussmann series’ Limitron fuse family and is a Class T, fast-acting, current limiting fuse. They are often used in Large apartment complexes, Multi-family meter stacks, and for VFD line protection, among other applications. Class T fuses are fast acting, current limiting fuses with a very small footprint. They are typically used where space in limited. They are commonly used in control panel boards, enclosed circuit panel boards for machinery, and safety switches.