| 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. | | |
| 1DU25R Supplementary Protector 25A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU40R Supplementary Protector 40A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D16UR Supplementary Protector 16A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3D05UR Supplementary Protector 0.5A, 3 Pole, 480Y/277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1CU1R Supplementary Protector 1A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU20R Supplementary Protector 20A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU40R Supplementary Protector 40A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1DU8R Supplementary Protector 8A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |