| 3D20UR Supplementary Protector 20A, 3 Pole, 480Y/277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3D25UR Supplementary Protector 25A, 3 Pole, 480Y/277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D05UR Supplementary Protector 0.5A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D2UR Supplementary Protector 2A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D12UR Supplementary Protector 12A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D60UR Supplementary Protector 60A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU20R Supplementary Protector 20A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU25R Supplementary Protector 25A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU40R Supplementary Protector 40A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1C1UR Supplementary Protector 1A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |