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| PartNumber | 1D03DL | 1D03UM | 1D03UL |
| Description | Circuit Breakers 1C03DL, 0.3A, CIRCUIT BREAKER | Circuit Breakers .3A MCB DCHAR 1pl 277VAC UL508 | Circuit Breakers 0.3A, D CHAR, 1POLE 277VAC, UL489 |
| Manufacturer | Altech | Altech | - |
| Product Category | Circuit Breakers | Circuit Breakers | - |
| Series | UL | UM | - |
| Current Rating | 300 mA | 300 mA | - |
| Voltage Rating DC | 125 VDC | 42 VDC | - |
| Number of Poles | 1 Pole | 1 Pole | - |
| Actuator Type | Handle | Handle | - |
| Minimum Operating Temperature | - 25 C | - 25 C | - |
| Maximum Operating Temperature | + 55 C | + 55 C | - |
| Illuminated | Not Illuminated | Not Illuminated | - |
| Termination Style | Box Clamp, Ring Tongue | Box Clamp, Ring Tongue | - |
| Brand | Altech | Altech | - |
| Mounting Style | DIN Rail Mount | DIN Rail Mount | - |
| Product Type | D-Trip Circuit Breakers | D-Trip Circuit Breakers | - |
| Factory Pack Quantity | 12 | 12 | - |
| Subcategory | Circuit Breakers | Circuit Breakers | - |
| RoHS | - | Y | - |
| Voltage Rating AC | - | 277 VAC | - |
| Voltage Rating | - | 277 VAC, 42 VDC | - |