| 1D40UR Supplementary Protector 40A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $21.87 | |
| 1D6UR Supplementary Protector 6A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $20.61 | |
| 1DU12R Supplementary Protector 12A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $19.24 | |
| 1DU15R Supplementary Protector 15A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $19.24 | |
| 1DU1R Supplementary Protector 1A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $19.24 | |
| 1DU25R Supplementary Protector 25A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $19.24 | |
| 1DU2R Supplementary Protector 2A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $19.24 | |
| 1DU40R Supplementary Protector 40A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $20.60 | |
| L8-1/1/B Sprecher + Schuh L8-1/1/B - Supplementary Protectors, CURVE-B, 1A, 1-POLE, UL10... | Sprecher + Schuh | $73.28 | |
| L8-20/2/B Sprecher + Schuh L8-20/2/B - Supplementary Protectors, CURVE-B, 20A, 2-POLE, UL... | Sprecher + Schuh | $151.70 | |