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| PartNumber | 3B4UM | 3B4UR | 3B4UC-302 |
| Description | Circuit Breakers 3B4UM, 4A, CIRCUIT BREAKER | Circuit Breakers 4A,MCB B CHAR 3PL 480Y/277VAC, UL1077 | |
| Manufacturer | Altech | Altech | - |
| Product Category | Circuit Breakers | Circuit Breakers | - |
| Series | UM | UR | - |
| Current Rating | 4 A | 4 A | - |
| Voltage Rating AC | 277 VAC | 277 VAC | - |
| Number of Poles | 3 Pole | 3 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 | B-Trip Circuit Breakers | B-Trip Circuit Breakers | - |
| Factory Pack Quantity | 4 | 4 | - |
| Subcategory | Circuit Breakers | Circuit Breakers | - |
| RoHS | - | Y | - |
