| 2CU8R Supplementary Protector 8A, 2 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2CU15R Supplementary Protector 15A, 2 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2CU32R Supplementary Protector 32A, 2 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2CU50R Supplementary Protector 50A, 2 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2DU4R Supplementary Protector 4A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2DU10R Supplementary Protector 10A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2DU12R Supplementary Protector 12A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU16R Supplementary Protector 16A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU30R Supplementary Protector 30A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU60R Supplementary Protector 60A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |