| 3CU15R Supplementary Protector 15A, 3 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3CU30R Supplementary Protector 30A, 3 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3CU32R Supplementary Protector 32A, 3 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3DU1R Supplementary Protector 1A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU10R Supplementary Protector 10A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU20R Supplementary Protector 20A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU25R Supplementary Protector 25A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 3DU40R Supplementary Protector 40A, 3 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1C1UR Supplementary Protector 1A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 1C3UR Supplementary Protector 3A, 1 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |