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| PartNumber | 1D1UR | 1D1UM | 1D1UL |
| Description | Circuit Breakers 1A,MCB D CHAR 1 PL, 277VAC, UL1077 | Circuit Breakers 1A D Characteristic UL 508 1 POLE | Circuit Breakers 1A, D CHAR, 1POLE 277VAC, UL489 |
| Manufacturer | Altech | Altech | Altech |
| Product Category | Circuit Breakers | Circuit Breakers | Circuit Breakers |
| RoHS | Y | Y | Y |
| Series | UR | UM | UL |
| Current Rating | 1 A | 1 A | 1 A |
| Voltage Rating AC | 277 VAC | 277 VAC | 277 VAC |
| Number of Poles | 1 Pole | 1 Pole | 1 Pole |
| Actuator Type | Handle | Handle | Handle |
| Minimum Operating Temperature | - 25 C | - 25 C | - 25 C |
| Maximum Operating Temperature | + 55 C | + 55 C | + 55 C |
| Illuminated | Not Illuminated | Not Illuminated | Not Illuminated |
| Termination Style | Box Clamp, Ring Tongue | Box Clamp, Ring Tongue | Box Clamp, Ring Tongue |
| Brand | Altech | Altech | Altech |
| Mounting Style | DIN Rail Mount | DIN Rail Mount | DIN Rail Mount |
| Product Type | D-Trip Circuit Breakers | D-Trip Circuit Breakers | D-Trip Circuit Breakers |
| Factory Pack Quantity | 12 | 12 | 12 |
| Subcategory | Circuit Breakers | Circuit Breakers | Circuit Breakers |
| Voltage Rating DC | - | 42 VDC | - |
| Voltage Rating | - | 277 VAC, 42 VDC | - |