Ferraz Shawmut Amp-Trap ; A4J Series Fast-acting fuse operates at a current rating of 40 Amps and voltage rating of 600 VAC/300 VDC. Class J fuse delivers exceptional current-limiting protection to a wide variety of applications. It finds wide variety of application in circuit breakers, feeder circuits, load centers, panel boards, switchboards, capacitors, bus duct, lighting, heating and other general loads. Their unique dimensions inhibit the substitution of other fuses with lower voltage ratings, interrupting ratings or current-limiting capability. It has an interrupt current rating of 200 kilo-Amps at 600 VAC and 20 kilo-Amps at 300 VDC. Fiberglass body allows dimensional stability in harsh industrial environments. High current limitation feature is for low peak let-thru current. Its easy-to read imprint label provides fast identification and replacement. Fuse is UL listed, DC tested, CSA certified and meets RoHS compliant standards. Also known as -Ferraz Shawmut A4J40 Amp-Trap Class J Fast-Acting Fuse 40 Amp 600 Volt AC/3