Mersen OTM Series Series Ferraz Shawmut is Mersen. Mersen OTM One-Time midget fuses provide low-cost protection for 250VAC general purpose lighting, heating, control circuits, etc. where time-delay is not required. (Not for Branch Circuit Protection). Other Names: OTM5, OTM 5 Amp, OTM-5, OTM 5A, OTM5A, OTM-5A, OTM 5 Product specifications Ampere 5 A Voltage rating 250 Vac Interrupt rating 10 kA Speed Fast-Acting Class Midget Shape Cartridge Fuses Approvals UL, CSA, RoHS Substitute parts Bussmann BAF, Littelfuse BLF Datasheet Mersen OTM Datasheet Dimensions 0.41" Dia x 1.5" L (10.41x38.1mm) Item weight 0.2 oz Other names OTM5, OTM 5 Amp, OTM-5, OTM 5A, OTM5A, OTM-5A, OTM 5 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.