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| PartNumber | 3B63UM | 3B63UR | 3B634K |
| Description | Circuit Breakers 63A CRT BRKR BCHAR 3pl 480Y | Circuit Breakers 63A,MCB B CHAR 3PL 480Y/277VAC, UL1077 | |
| Manufacturer | Altech | - | - |
| Product Category | Circuit Breakers | - | - |
| RoHS | Y | - | - |
| Series | UM | - | - |
| Current Rating | 63 A | - | - |
| Voltage Rating AC | 277 VAC | - | - |
| Voltage Rating DC | 80 VDC | - | - |
| Number of Poles | 3 Pole | - | - |
| Actuator Type | Handle | - | - |
| Minimum Operating Temperature | - 25 C | - | - |
| Maximum Operating Temperature | + 55 C | - | - |
| Illuminated | Not Illuminated | - | - |
| Termination Style | Box Clamp, Ring Tongue | - | - |
| Voltage Rating | 277 VAC, 80 VDC | - | - |
| Brand | Altech | - | - |
| Mounting Style | DIN Rail Mount | - | - |
| Product Type | B-Trip Circuit Breakers | - | - |
| Factory Pack Quantity | 4 | - | - |
| Subcategory | Circuit Breakers | - | - |