| 1DU4R Supplementary Protector 4A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU13R Supplementary Protector 13A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU32R Supplementary Protector 32A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU63R Supplementary Protector 63A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2CU4R Supplementary Protector 4A, 2 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2CU13R Supplementary Protector 13A, 2 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2CU20R Supplementary Protector 20A, 2 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2CU25R Supplementary Protector 25A, 2 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2CU63R Supplementary Protector 63A, 2 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2DU2R Supplementary Protector 2A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |