| 1DU3R Supplementary Protector 3A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU6R Supplementary Protector 6A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU13R Supplementary Protector 13A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU15R Supplementary Protector 15A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU63R Supplementary Protector 63A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1C2UR Supplementary Protector 2A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1C30UR Supplementary Protector 30A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2C5UR Supplementary Protector 5A, 2 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2C10UR Supplementary Protector 10A, 2 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 2C12UR Supplementary Protector 12A, 2 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |