| 1D20UR Supplementary Protector 20A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $17.33 | |
| 1D30UR Supplementary Protector 30A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $17.33 | |
| 1D50UR Supplementary Protector 50A, 1 Pole, 277V AC, D Trip, UL1077 | Altech Corp. | $18.38 | |
| 1D63UR Supplementary Protector 63A, 1 Pole, 277V AC, D Trip | Altech Corp. | $18.38 | |
| 2C3UR Supplementary Protector 3A, 2 Pole, 480Y/277V AC, C Trip, UL1077 | Altech Corp. | $34.66 | |
| 3CU8R Supplementary Protector 8A, 3 Pole, 277V AC, C Trip, UL1077 | Altech Corp. | $48.51 | |
| ST203M-K1NA Supplementary Curcuit Protector, 3 pole, 1.0 Amp, 277 VAC, K Curve, UL 1077, w/N... | ABB Control | $474.85 | |
| ST201M-Z13NA Supplementary Curcuit Protector, 1 pole, 13.0 Amp, 277 VAC, Z Curve, UL 1077, w/... | ABB Control | $221.92 | |
| | ABB Control | $933.60 | |
| L8-1/2/B Sprecher + Schuh L8-1/2/B - Supplementary Protectors, CURVE-B, 1A, 2-POLE, UL10... | Sprecher + Schuh | $136.53 | |