Product Introduction
The HS11FD series interlock-protected knife switches with grounding terminals are suitable for use in alternating current systems with a frequency of 50Hz, a rated insulation voltage of 690V, a rated operational voltage of AC400V, and a rated operational current ranging from 200A to 600A. They are primarily used in industrial and mining enterprises as well as rural power distribution networks. These switches are designed for making and breaking circuits (under no-load conditions), isolating power supplies, and providing short-circuit grounding protection. Their purpose is to prevent miswiring and misoperation on low-voltage power supply lines, thereby avoiding accidents.
The product conforms to the GB/T 14048.3 standard.
| Model | Outline and Installation Dimensions (mm) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| A | B | C | E | F | G (Only for rear terminals) | H | L | M | |
| HS11FD-200/48(49) | 140 | 258 | 70 | 75 | 300 | 48 | 97 | 305 | 270 |
| HS11FD-400/48(49) | 140 | 258 | 70 | 75 | 300 | 48 | 97 | 305 | 270 |
| HS11FD-600/48(49) | 160 | 258 | 80 | 75 | 300 | 48 | 97 | 342 | 300 |
Technical Parameters
| Parameter | 200A | 400A | 600A |
|---|---|---|---|
| Rated Operational Current (Ie) | 200A | 400A | 600A |
| Rated Operational Voltage (Ue) / Frequency | AC400V / 50Hz | ||
| Rated Insulation Voltage (Ui) | 690V | ||
| Rated Short-Time Withstand Current (Icw) | 10kA / 1s | 20kA / 1s | 25kA / 1s |
| Rated Impulse Withstand Voltage (Uimp) | 8kV | ||
| Mechanical Life (Operating Cycles) | 10,000 cycles | 10,000 cycles | 5,000 cycles |
| Operating Frequency | 60 cycles/hour | ||
| Utilization Category | AC-20A |
Resistance to Abnormal Heat and Fire: The switch does not produce flames or glow at (960 ± 15)°C; or any flames or glow extinguish spontaneously within 30 seconds after removal of the glow-wire, without igniting the underlying tissue paper.