| Dimensioni | Tensione nominale (V) | Corrente nominale (A) | Peso (g) |
| NT00C | AC500/690 V CC 440 V. | 2,4,6,10,16,20,25,32,35,40,50,63,80,100 | 145 |
| NT00 | AC500/690 V CC 440 V. | 2,4,6,10,16,20,25,32,40,50,63,80,100,125,160 | 180 |
| NT0 | AC500/690 V CC 440 V. | 4,6,10,16,20,25,32,40,50,63,80,100,125,160 | 250 |
| NT1 | AC500/690 V CC 440 V. | 63,80,100,125,160,200,224,250 | 460 |
| NT2 | AC500/690 V CC 440 V. | 80,100,125,160,200,224,250,300,315,355,400 | 680 |
| NT3 | AC500/690 V CC 440 V. | 300,315,355,400,425,500,630 | 900 |
| NT4 | AC500/690 V CC 440 V. | 630,800,1000,1250 | 2200 |