| 3D6UR Supplementary Protector 6A, 3 Pole, 480Y/277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3D10UR Supplementary Protector 10A, 3 Pole, 480Y/277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1CU3R Supplementary Protector 3A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU16R Supplementary Protector 16A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU25R Supplementary Protector 25A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU30R Supplementary Protector 30A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1DU1R Supplementary Protector 1A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU2R Supplementary Protector 2A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU12R Supplementary Protector 12A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU15R Supplementary Protector 15A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |