| 3DU3R Supplementary Protector 3A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $48.51 | |
| 3DU6R Supplementary Protector 6A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $48.51 | |
| 3DU8R Supplementary Protector 8A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $48.51 | |
| 1D1UR Supplementary Protector 1A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $17.33 | |
| 1D3UR Supplementary Protector 3A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $17.33 | |
| 1D15UR Supplementary Protector 15A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $17.33 | |
| 1D20UR Supplementary Protector 20A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $17.33 | |
| 1D30UR Supplementary Protector 30A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $17.33 | |
| 1D50UR Supplementary Protector 50A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $18.38 | |
| 1D63UR Supplementary Protector 63A, 1 Pole, 277V AC, D Trip | Altech Corp. | $18.38 | |