The Lot of 2 Bussmann SA-8 Buss Fuses Tamper-Proof Adaptors includes 4 pieces per box of tamper-proof fuses with a Type S tripping characteristic. These current-limiting fuses are suitable for interior use and provide overload protection. With a screw mounting style and electrical connection, they are designed for a single-phase AC system. The horizontal/vertical orientation and tamper-proof feature make them a reliable choice for electrical equipment and supplies in a business or industrial setting.