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| PartNumber | JCK-B-12R | JCK-B-18R | JCK-B-12R-Q |
| Description | Specialty Fuses 2540V 230A | Specialty Fuses 2540V 390A | 2400V, BOLT,230A,QUIKSHIP |
| Manufacturer | Eaton | Eaton | - |
| Product Category | Specialty Fuses | Electrical, Specialty Fuses | - |
| RoHS | N | - | - |
| Series | JCK-B | JCK-B | - |
| Product | Medium Voltage Fuses | Medium Voltage Fuses | - |
| Current Rating | 230 A | 390A | - |
| Voltage Rating AC | 2.54 kVAC | 2.54 kV | - |
| Interrupt Rating | 80 kA, 50 kA | 80 kA / 50 kA | - |
| Mounting Style | Stud | Stud | - |
| Termination Style | Bolt Down | Bolt Down | - |
| Indicator Style | Open Fuse | Open Fuse | - |
| Packaging | Bulk | Bulk | - |
| Length | 14 3/16 in | 14 3/16 in | - |
| Type | R-Rated Fuse | R-Rated Fuse | - |
| Width | 12 13/16 in | 12 13/16 in | - |
| Brand | Bussmann / Eaton | - | - |
| Product Type | R-Rated Medium Voltage Fuse | R-Rated Medium Voltage Fuse | - |
| Factory Pack Quantity | 1 | - | - |
| Subcategory | Fuses | - | - |
| Unit Weight | 7.500 lbs | 3402 kg | - |
| Part Aliases | - | JCK-B-18R | - |
| Package Case | - | Cartridge, Non-Standard | - |
| Operating Temperature | - | - | - |
| Mounting Type | - | Bolt Mount | - |
| Features | - | Indicating | - |
| Size Dimension | - | 3.000" Dia x 10.8000" L (76.20mm x 274.00mm) | - |
| Applications | - | Motor Protection | - |
| Voltage Rating DC | - | - | - |
| Fuse Type | - | Cartridge | - |
| Response Time | - | - | - |
| Class | - | R | - |
| Approvals | - | UR | - |
| Breaking Capacity Rated Voltage | - | 50kA | - |