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| PartNumber | 1CU40R | 1CU40L | 1CU452A1F-1950-1T |
| Description | Circuit Breakers 1CU40R, 40A MCB, C CHAR | Circuit Breakers 40A One Pole "C" | |
| Manufacturer | Altech | Altech | - |
| Product Category | Circuit Breakers | Circuit Breakers | - |
| Series | R | L | - |
| Current Rating | 40 A | 40 A | - |
| Voltage Rating AC | 277 VAC | 240 VAC | - |
| Number of Poles | 1 Pole | 1 Pole | - |
| Actuator Type | Handle | Handle | - |
| Minimum Operating Temperature | - 25 C | - 25 C | - |
| Maximum Operating Temperature | + 60 C | + 60 C | - |
| Illuminated | Not Illuminated | Not Illuminated | - |
| Termination Style | Screw | Screw | - |
| Voltage Rating | 277 VAC | 277 VAC | - |
| Brand | Altech | Altech | - |
| Mounting Style | DIN Rail Mount | DIN Rail Mount | - |
| Product Type | C-Trip Circuit Breakers | C-Trip Circuit Breakers | - |
| Factory Pack Quantity | 12 | 12 | - |
| Subcategory | Circuit Breakers | Circuit Breakers | - |
| Unit Weight | 4.761985 oz | 5 oz | - |
| RoHS | - | Y | - |