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| Part Number | K2B-123 | K2B-125 | K2B-090 | K2B-095 | K2B-140 |
| Manufacturer | OptiFuse | OptiFuse | OptiFuse | OptiFuse | OptiFuse |
| Package/Case | Radial, Box | Radial, Box | Radial, Box | Radial, Box | Radial, Box |
| Series | K2B | K2B | K2B | K2B | K2B |
| Packaging | Bulk | Bulk | Bulk | Bulk | Bulk |
| Product Status | Active | Active | Active | Active | Active |
| Type | Fuse | Fuse | Fuse | Fuse | Fuse |
| Holding Temperature | - | 95°C (203°F) | - | - | 105°C (221°F) |
| Rated Functioning Temperature | 123°C (253°F) | 125°C (257°F) | 90°C (194°F) | 95°C (203°F) | 140°C (284°F) |
| Reset Temperature | - | - | - | - | - |
| Voltage Rating - AC | 250.0 | 250.0 | 250.0 | 250.0 | 250.0 |
| Voltage Rating - DC | - | - | - | - | - |
| Current Rating (Amps) | 2 A | 2 A | 2 A | 2 A | 2 A |
| Approval Agency | - | CCC, VDE | - | - | CCC, VDE |
| Maximum Temperature Limit | - | 180°C (356°F) | - | - | 180°C (356°F) |
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