| 2C1UR Supplementary Protector 1A, 2 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3CU16R Supplementary Protector 16A, 3 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3CU20R Supplementary Protector 20A, 3 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3C4UR Supplementary Protector 4A, 3 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3C16UR Supplementary Protector 16A, 3 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3C25UR Supplementary Protector 25A, 3 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3C40UR Supplementary Protector 40A, 3 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 3C50UR Supplementary Protector 50A, 3 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | | |
| 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. | | |