| 1C10UR Supplementary Protector 10A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | | |
| 1CU05R Supplementary Protector 0.5A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU4R Supplementary Protector 4A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU6R Supplementary Protector 6A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU32R Supplementary Protector 32A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1DU5R Supplementary Protector 5A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU10R Supplementary Protector 10A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU20R Supplementary Protector 20A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU30R Supplementary Protector 30A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU50R Supplementary Protector 50A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |