"These fuse from Bussmann can help protect your equipment and home whenever an overload current occurs. With fast acting fuse speed, 30A fuse amps, an interrupt rating of 200kA at 250VAC, 100kA at 250VDC, and ktn-r series, this fuse is a must-have. It is a nonindicating fuse. It has a single element. The body is made of melamine material. The voltage rating is 250vac/dc. As far as size goes, it is 9/16"" in diameter. When it comes to product classification, this item can be grouped as RK1. Functionally equal to Mersen/Ferraz Shawmut A2K-R, Littelfuse KLNR, you'll thoroughly enjoy its use. Standards include: CE, UL 248-12 Guide JDDZ, File E4273, CSA C22.2 No. 248.12, Class 1422-02, File 53787.FeaturesElement: SingleFuse Amps: 30AItem: FuseLength: 2""Body Material: MelamineBody Style: CylindricalClass: RK1Fuse Holder Code: HSeries: KTN-RFunctionally Equal To: Mersen/Ferraz Shawmut A2K-R, Littelfuse KLNRStandards: CE, UL 248-12 Guide JDDZ, File E4273, CSA C22.2 No. 248.12, Class 1422-02, File 53787Diameter: 9/16""Indicating / Nonindicating: NonindicatingRejection / Nonrejection: RejectionFuse Voltage Rating: 250VAC/DCFuse Speed: Fast ActingFuse Interrupt Rating: 200kA at 250VAC, 100kA at 250VDC"