4 amp patented single bi-directional LED micro 2 blade fuses. Housing material: PA66 thermoplastic; fuse: zinc alloy. Voltage rating: 32V DC max. Interrupting rating: 1000A @ 32V DC. Conforms to SAE J2741 & ISO 8820-3. RoHS & REACH compliant. Ranges of LED standard blade fuses (Part Nos. 37131 - 37137) & LED mini blade fuses (Part Nos. 37139 - 37145) are also available.