The R30A1B is a single-pole, 250V Class R fuse holder featuring box-style connectors. It is rated for 30 amps and is constructed with a durable thermoplastic base. This holder is designed to accept Class R fuses measuring 9/16 inches in diameter by 2 inches in length, and its connectors accommodate a copper wire range from #6 to #14 AWG. The component has a 200,000 Amp short circuit withstand rating and utilizes a tin-plated copper alloy clip with a patented rejection member. As a UL Listed and CSA Certified device, the R30A1B is ideal for various industrial and commercial overcurrent protection applications.