| PartNumber | JLLS1200X | JLLS125.X | JLLS1200XXP |
| Description | Industrial & Electrical Fuses 1200A 600VAC 300VDC Class T | Industrial & Electrical Fuses 125A 600VAC 300VDC Class T | Industrial & Electrical Fuses 1200A 600VAC 300VDC CLASS T |
| Manufacturer | Littelfuse | Littelfuse Inc. | - |
| Product Category | Industrial & Electrical Fuses | Electrical, Specialty Fuses | - |
| RoHS | Y | - | - |
| Series | JLLS | POWR-GARDR JLLS | - |
| Product | Class T Fuse | Class T Fuse | - |
| Current Rating | 1.2 kA | 125A | - |
| Voltage Rating AC | 600 VAC | 600 V | - |
| Fuse Type | Fast Blow | Cartridge | - |
| Voltage Rating DC | 300 VDC | 300 VDC | - |
| Interrupt Rating | 20 kA at 300 VDC | 200 kA at 600 VAC / 20 kA at 300 VDC | - |
| Body Style | Cartridge Leaded Fuses | Cartridge Blade Fuses | - |
| Mounting Style | Holder | Holder | - |
| Termination Style | Cartridge | Knife Blade | - |
| Fuse Size / Group | Class T | - | - |
| Indicator Style | Without Indicator | Without Indicator | - |
| Packaging | Bulk | Bulk | - |
| Diameter | 66.7 mm | - | - |
| Length | 133.9 mm | - | - |
| Type | Fast Acting Fuse | Power Guard | - |
| Brand | Littelfuse | - | - |
| Product Type | Industrial Power Fuses | Industrial Power Fuses | - |
| Factory Pack Quantity | 1 | - | - |
| Subcategory | Fuses | - | - |
| Tradename | POWR-GARD | - | - |
| Package Case | - | Cylindrical, Blade Terminal (Bolt) | - |
| Operating Temperature | - | - | - |
| Mounting Type | - | Bolt Mount | - |
| Features | - | - | - |
| Size Dimension | - | 1.063" Dia x 1.657" L (27.00mm x 42.10mm) | - |
| Applications | - | Electrical, Industrial | - |
| Response Time | - | Fast | - |
| Class | - | T | - |
| Approvals | - | CE, CSA, UL | - |
| Breaking Capacity Rated Voltage | - | 200kA | - |
| Fuse Size Group | - | Class T | - |