| 1C50UR Supplementary Protector 50A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1D6UR Supplementary Protector 6A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D13UR Supplementary Protector 13A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1D40UR Supplementary Protector 40A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 2C1UR Supplementary Protector 1A, 2 Pole, 480Y/277V AC, C 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. | | |