MCR-1/4 is a subminiature through-hole fast-acting electronic fuse from the Bussmann MCR Series, designed for circuit protection applications. It features a solid matrix construction with a high temperature thermoplastic body rated UL 94 V0 and tin-lead plated copper lead wires with 0.025" diameter. The fuse is rated for 125V AC and 125V DC with an interrupting rating of 50A AC and 300A DC, and a typical voltage drop of 0.76V at 100% rated current. It operates over a temperature range of -55°C to 125°C with proper fusing and carries UL and CSA certifications. Common applications include electronic circuit protection where fast-acting overcurrent protection is required in compact form factors.