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| Part Number | BSP3-277-20KA | BSP3-277 | BSP3-277-20KA-TN | BSP3-480 | BSP3-120-LC |
| Manufacturer | Thomas Research Products | Thomas Research Products | Thomas Research Products | Thomas Research Products | Thomas Research Products |
| Series | BSP3 | BSP3 | BSP3 | BSP3 | BSP3 |
| Packaging | Box | Box | Box | Box | Box |
| Product Status | Active | Active | Active | Active | Active |
| Type | - | - | - | - | - |
| Form | Module Only | Module Only | Module Only | Module Only | Module Only |
| Number of Poles | 3 | 3 | 3 | 3 | 3 |
| Voltage - Continuous Operating (Max) (MCOV) | 320VAC, 420VDC | 320VAC, 420VDC | 320VAC, 420VDC | 550VAC, 715VDC | 150VAC, 200VDC |
| Current - Discharge (Nom) (8/20µS) | 20 kA | 10 kA | 20 kA | 10 kA | 10 kA |
| Current - Discharge (Max) (8/20µS) | 20 kA | 10 kA | 20 kA | 10 kA | 10 kA |
| Operating Temperature | - | - | - | - | - |
| Voltage - Protection Rating (VPR) | - | - | - | - | - |
| Voltage - Protection Level (VP) (2416) | - | - | - | - | - |
| Operating Temperature | - | - | - | - | - |
| Features | - | - | - | - | - |
| Mounting Type | Free Hanging | Free Hanging | Free Hanging | Free Hanging | Free Hanging |
| Approval Agency | CE, cURus, UL | cURus, UL | CE, cURus, UL | cURus, UL | cURus, UL |
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