| 1CU1R Supplementary Protector 1A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU20R Supplementary Protector 20A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU40R Supplementary Protector 40A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1DU8R Supplementary Protector 8A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU16R Supplementary Protector 16A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2CU60R Supplementary Protector 60A, 2 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2DU5R Supplementary Protector 5A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2DU6R Supplementary Protector 6A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2DU13R Supplementary Protector 13A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2DU16R Supplementary Protector 16A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |