Safety J Finger-Safe 30 Amp Class J Fuse Holders. Holder Amps: 30. Indicating: Yes. 75Â°C Cu Conductor Size (AWG) and Type: 8-18 stranded, single or dual or 10-18 solid, single or dual. Terminal torque N.m (lb-in): 2.26 (20). The Bussmann series Safety J are gangable, single-pole IP20 finger-safe fuse holders for 30 and 60 amp case size Class J fuses. Available in indicating and non-indicating versions, these compact fuse holders can improve electrical safety and speed trouble shooting with test probe holes on the fuse carriage. Optional open fuse indication shows the open fuse at a glance. The 30 amp holder features dual box lug terminals that are ideal for â€œdaisy-chainâ€ wiring applications or powering multiple downstream loads.. Cooper Bussmann. Eaton. JTN60030. UPC: 051712557016. EAN: 0051712557016. GTIN: 00051712557016.