Check the listing for details. Bullet Time Delay Dual Element Fuse ECSR150 Class RK5. Condition: Used. Listed at 35.00 USD. Please look over pictures and ask any questions. The item you receive may not be the exact one in the picture but it will be same condition, model and fully functional. Thank you! The Bullet Time Delay Dual Element Fuse ECSR150 Class RK5 is a high-quality electrical fuse suitable for interior use. This D-Type Cartridge fuse has a copper body with thermal overload protection, providing reliable overcurrent protection for electrical equipment and supplies. With a voltage rating of 551-600V and a slow-blow time-delay operation method, this fuse offers peace of mind and safety for various business and industrial applications. Its two poles and one-way design make it easy to install and operate, making it a versatile choice for any room.