| 1D15UR Supplementary Protector 15A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D20UR Supplementary Protector 20A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D30UR Supplementary Protector 30A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D50UR Supplementary Protector 50A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D63UR Supplementary Protector 63A, 1 Pole, 277V AC, D Trip | Altech Corp. | | |
| 2C3UR Supplementary Protector 3A, 2 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3CU8R Supplementary Protector 8A, 3 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3DU4R Supplementary Protector 4A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1CU5R Supplementary Protector 5A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU13R Supplementary Protector 13A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |