| 1DU2R Supplementary Protector 2A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU12R Supplementary Protector 12A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU15R Supplementary Protector 15A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU25R Supplementary Protector 25A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| 1DU40R Supplementary Protector 40A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | | |
| ST203M-B15 Supplementary Curcuit Protector, 3 pole, 15.0 Amp, 277 VAC, B Curve, UL 1077 | ABB Control | | |
| ST203M-B1.6NA Supplementary Curcuit Protector, 3 pole, 1.6 Amp, 277 VAC, B Curve, UL 1077, w/N... | ABB Control | | |
| ST201M-K60 Supplementary Curcuit Protector, 1 pole, 60.0 Amp, 277 VAC, K Curve, UL 1077 | ABB Control | | |
| ST201M-B1.6NA Supplementary Curcuit Protector, 1 pole, 1.6 Amp, 277 VAC, B Curve, UL 1077, w/N... | ABB Control | | |
| ST202M-B1.6 Supplementary Curcuit Protector, 2 pole, 1.6 Amp, 277 VAC, B Curve, UL 1077 | ABB Control | | |