| PartNumber | 2D1UL | 2D1UR | 2D1UM |
| Description | Circuit Breakers 1A, D CHAR, 2POLE 480Y/277VAC,UL489 | Circuit Breakers 1A,MCB D CHAR 2PL 480Y/277VAC, UL1077 | Circuit Breakers 1A MCB DCHAR 1P+N 277VAC UL508 |
| Manufacturer | Altech | Altech | Altech |
| Product Category | Circuit Breakers | Circuit Breakers | Circuit Breakers |
| RoHS | Y | Y | - |
| Series | UL | UR | UM |
| Current Rating | 1 A | 1 A | 1.0A |
| Voltage Rating AC | 277 VAC | 277 VAC | 277 V |
| Number of Poles | 2 Pole | 2 Pole | 2 Pole |
| Actuator Type | Handle | Handle | Handle |
| Minimum Operating Temperature | - 25 C | - 25 C | - |
| Maximum Operating Temperature | + 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 | - |
| Mounting Style | DIN Rail Mount | DIN Rail Mount | DIN Rail |
| Product Type | D-Trip Circuit Breakers | D-Trip Circuit Breakers | - |
| Factory Pack Quantity | 6 | 6 | - |
| Subcategory | Circuit Breakers | Circuit Breakers | - |
| Product | - | - | Circuit Protection Devices |
| Type | - | - | D-Trip |
| Voltage Rating | - | - | 277 VAC 80 VDC |
| Operating Temperature Range | - | - | - 25 C to + 55 C |
| Voltage Rating DC | - | - | 80 VDC |