Ampere Rating (A) | Amp Code | Ordering Number (Std.) | Ordering Number (Mil.) | Max Voltage Rating (V) | Interrupting Rating | Nominal Cold Resistance (Ohms) | Nominal Melting I²t (A²sec) | Nom Voltage Drop (V) |
| .062 | .062 | 251.062 | 253.062 | 125 | 300A @ 125VDC 50A @ 125VAC | 7.000 | 0.000113 | 1.4 |
| .125 | .125 | 251.125 | 253.125 | 1.700 | 0.00174 | 0.285 | ||
| .200 | .200 | 251.200 | 253.200 | 0.895 | 0.0048 | 0.345 | ||
| .250 | .250 | 251.250 | 253.250 | 0.665 | 0.0116 | 0.24 | ||
| .375 | .375 | 251.375 | 253.375 | 0.395 | 0.0296 | 0.215 | ||
| .500 | .500 | 251.500 | 253.500 | 0.302 | 0.0598 | 0.2165 | ||
| .630 | .630 | 251.630 | 0.205 | 0.0980 | 0.188 | |||
| .750 | .750 | 251.750 | 253.750 | 0.175 | 0.153 | 0.176 | ||
| 1.00 | 001. | 251001. | 253001. | 0.128 | 0.256 | 0.194 | ||
| 1.25 | 1.25 | 2511.25 | 0.100 | 0.390 | 0.2 | |||
| 1.50 | 01.5 | 25101.5 | 25301.5 | 0.0823 | 0.587 | 0.21 | ||
| 2.00 | 002. | 251002. | 253002. | 0.0473 | 0.405 | 0.141 | ||
| 2.50 | 02.5 | 25102.5 | 0.0360 | 0.721 | 0.132 | |||
| 3.00 | 003. | 251003. | 253003. | 0.0295 | 1.19 | 0.131 | ||
| 3.50 | 03.5 | 25103.5 | 0.0240 | 1.58 | 0.1205 | |||
| 4.00 | 004. | 251004. | 253004. | 0.0204 | 2.45 | 0.114 | ||
| 5.00 | 005. | 251005. | 253005. | 0.0158 | 4.14 | 0.11 | ||
| 7.00 | 007. | 251007. | 253007. | 0.0107 | 10.4 | 0.102 | ||
| 10.0 | 010. | 251010. | 253010. | 0.0072 | 25.5 | 0.1 | ||
| 12.0 | 012 | 251012. | 32 | 300A@32VDC 50A@32VAC | 0.0059 | 45.2 | 0.0878 | |
| 15.0 | 015. | 251015. | 253015. | 0.00446 | 68.8 | 0.071 |
