| 1D4UR Supplementary Protector 4A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D10UR Supplementary Protector 10A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D25UR Supplementary Protector 25A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D32UR Supplementary Protector 32A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2C2UR Supplementary Protector 2A, 2 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3CU63R Supplementary Protector 63A, 3 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3DU05R Supplementary Protector 0.5A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU2R Supplementary Protector 2A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1CU8R Supplementary Protector 8A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1CU10R Supplementary Protector 10A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |