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| Part Number: | BB4-B0-42-620-121-D |
| Category: | Circuit Protection |
| Subcategory: | Circuit Breakers |
| Manufacturer: | Carling Technologies |
| Packaging: | Bulk |
| Product Status: | Active |
| Mounting Type: | Panel Mount |
| Breaker Type: | Magnetic (Hydraulic Delay) |
| Current Rating (Amps): | 20A |
| Voltage Rating - AC: | 277 V |
| Voltage Rating - DC: | 80 V |
| Actuator Type: | Lever |
| Number of Poles: | 4 |
| Illumination: | None |
| Illumination Voltage (Nominal): | - |
| Approval Agency: | CSA, VDE, UL |