| PartNumber | BK/S505-4-R | BK/S505-4A |
| Description | Cartridge Fuses SMALL DIM. FUSE | Cartridge Fuses 250V 4A Time Delay Ceramic |
| Manufacturer | Eaton | Eaton |
| Product Category | Cartridge Fuses | Fuses |
| RoHS | Y | - |
| Series | S505 | S505 |
| Product | Ceramic Fuse | - |
| Current Rating | 4 A | 4A |
| Fuse Type | Time Delay / Slow Blow | Cartridge, Ceramic |
| Fuse Size / Group | 5 mm x 20 mm | - |
| Voltage Rating AC | 250 VAC | 250V |
| Interrupt Rating | 1.5 kA | - |
| Mounting Style | Holder / Clip | - |
| Termination Style | Clip | - |
| Packaging | Bulk | Bulk |
| Resistance | 18.5 mOhms | - |
| Body Style | Cylindrical | - |
| Diameter | 5.2 mm | - |
| Indicator Style | Without Indicator | - |
| Length | 20 mm | - |
| Brand | Coiltronics / Eaton | - |
| Product Type | European Ferrule Fuse | - |
| Factory Pack Quantity | 100 | - |
| Subcategory | Fuses | - |
| Part # Aliases | BK-S505-4-R | - |
| Unit Weight | 0.037390 oz | - |
| Color | - | - |
| Package Case | - | 5mm x 20mm |
| Operating Temperature | - | - |
| Mounting Type | - | Holder |
| Size Dimension | - | 0.205" Dia x 0.787" L (5.20mm x 20.00mm) |
| Voltage Rating DC | - | - |
| Response Time | - | Slow |
| Approvals | - | BSI, CCC, CSA, IMQ, SEMKO, UR, VDE |
| Breaking Capacity Rated Voltage | - | 1.5kA |
| MeltingI2t | - | 52 |