Cooper Bussmann Low-Peak LPJ Cartridge Fuse, 125A, Speed T, 41.4 x 141.4mm. Voltage Rating: 300 V, 600 V. Overall Length: 146.05mm. High Rupture Capacity: Yes. Breaking Capacity at Maximum Voltage Rating: 20 kA @ 300 V dc, 30 kA @ 600 V ac. MPN: LPJ-125SP