Scope of Application
The QKH1 (HR6) series fuse-switch disconnectors (here in after referred to as “the switches”) have a rated insulation voltage of AC1000V, rated operational voltages of AC400/690V, and a rated frequency of 50Hz. Their rated operational current ranges from 160A to 800A. They are primarily used in distribution circuits and motor circuits with high short-circuit currents. These switches serve as power switches, isolating switches, and emergency switches, and provide circuit protection. This switch is not intended for direct switching of individual motors. When the switch is used with an isolator replacing the fuse-link, it loses its function of protecting the circuit against overload and short-circuit, and can only be used for making and breaking the circuit.
| Model | Outline Dimensions (mm) | Installation Dimensions (mm) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | a | b | c | d | ø.e. | ø.f. | |
| QKH1(HR6)-160/3 | 134 | 215 | 142 | 245 | 40 | 80 | 198 | 80 | 80 | ø6.5 | ø6.5 |
| QKH1(HR6)-250/3 | 184 | 280 | 162 | 320 | 60 | 120 | 260 | 120 | 120 | ø8.5 | ø8.5 |
| QKH1(HR6)-400/3 | 220 | 300 | 194 | 360 | 72 | 144 | 280 | 144 | 144 | ø8.5 | ø8.5 |
| QKH1(HR6)-630/3 | 244 | 300 | 194 | 360 | 80 | 160 | 280 | 160 | 160 | ø8.5 | ø8.5 |
| QKH1(HR6)-800/3 | 244 | 300 | 194 | 360 | 80 | 160 | 280 | 160 | 160 | ø8.5 | ø8.5 |