| 2DU1R Supplementary Protector 1A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2DU8R Supplementary Protector 8A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2DU32R Supplementary Protector 32A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2DU50R Supplementary Protector 50A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2DU63R Supplementary Protector 63A, 2 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1CU05R Supplementary Protector 0.5A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2C6UR Supplementary Protector 6A, 2 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2C20UR Supplementary Protector 20A, 2 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2D20UR Supplementary Protector 20A, 2 Pole, 480Y/277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU12R Supplementary Protector 12A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |