| 3D5UR Supplementary Protector 5A, 3 Pole, 480Y/277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1CU20R Supplementary Protector 20A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1DU8R Supplementary Protector 8A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU16R Supplementary Protector 16A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1CU1R Supplementary Protector 1A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3DU4R Supplementary Protector 4A, 3 Pole, 277V AC, D 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. | | |