Function and Use
The NHR17 series fuse-type isolating switch is a new product independently developed by our company. Its rated insulation voltage is 1000V, its rated operating voltage reaches up to 690V, its rated operating current reaches up to 1000A, and its rated frequency is 50Hz. It is suitable for distribution circuits and motor circuits with high short-circuit current (note: switches of 63A and below are not applicable in capacitor cabinets). It is used as a power switch, isolating switch, and emergency switch, and is used for circuit protection, but is generally not used for directly opening and closing a single motor.
Detail Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Agreed Heating Current (A) | 63(32) |
| | 160(100) |
| | 250 |
| | 400 |
| | 630 |
| | 800 |
| | 1000 |
| Rated Insulation Voltage (V) | 1000 |
| Rated Operating Current (A) | |
| | 400V AC21 |
| | 32、63 |
| | 100、160 |
| | 250 |
| | 400 |
| | 630 |
| | 800 |
| | 1000 |
| | 400V AC22 |
| | 32、63 |
| | 100、160 |
| | 250 |
| | 400 |
| | 630 |
| | 800 |
| | 1000 |
| | 400V AC23 |
| | 32、63 |
| | 100、160 |
| | 250 |
| | 400 |
| | 630 |
| | 690V AC21 |
| | 100、160 |
| | 250 |
| | 400 |
| | 630 |
| | 690V AC22 |
| | 100 |
| | 160 |
| | 315 |
| | 425 |
| Operating Force N | ≤120 |
| | ≤250 |
| | ≤350 |
| | ≤350 |
| | ≤450 |
| | ≤450 |
| | ≤450 |
| Fuse | Model |
| | RT29-125 |
| | NT00、RT36-00 |
| | NT1、RT36-1 |
| | NT2、RT36-2 |
| | NT3、RT36-3 |
| | CRT4 |
| | RT17-1250/1000A HDLRT0-1000 NT4 |
| | Rated Current of Fuse A (Rated Short Circuit Current) at 400V |
| | 20 |
| | 32 |
| | 63 (50kA) |
| | 20、25、32、35、40、50、63、80、100、125、160 (≥100kA) |
| | 80、100、125、160、200、224、250 (≥100kA) |
| | 125、160、200、224、250、300、315、355、400 (≥100kA) |
| | 315、355、400、425、500、630 (≥100kA) |
| | 500、630、800 (≥100kA) |
| | 630、800、1000 (≥100kA) |
| | Rated Current of Fuse A (Rated Short Circuit Current) at 690V |
| | 20、25、32、35、40、50、63、80、100 (≥50kA) |
| | 80、100、125、160、200 (≥50kA) |
| | 125、160、200、224、250、300、315 (≥50kA) |
| | 315、355、400、425 (≥50kA) |
