Low Voltage Knife Fuse Switch
Product Title
Product Details
JDW3-0.5, GWR1-0.5
HJDW3-0.5, HGWR1-0.5
JDW3-0.5G, GWR1-0.5G
HJDW3-0.5G, HGWR1-0.5G
The JDW3-0.5 and GWR1-0.5 low-voltage knife-fuse switches are suitable for 500V 50Hz outdoor distribution lines, serving as protection and overload protection for the low-voltage side of transformers. Under certain conditions, they can switch no-load transformers, no-load lines, and rated working current.
◆ Altitude not exceeding 2000 meters.
◆ Ambient temperature not higher than +40C, not lower than -25C.
◆ Relative humidity not greater than 85% (relative to +25±5C).
◆ Locations free from combustion and explosion hazards, without severe vibration and impact, and without chemicals that seriously corrode metals and insulating materials.
The product mainly consists of contact blades, contacts, post insulators, base and other components. Three units form a group. The product is small in size and light in weight, making it easy for overhead installation. The contact between the blade and the contact adopts a spring locking method, ensuring good and reliable contact. Under normal vibration, it will not open by itself. This knife-fuse switch is one of the commonly used protection devices in low-voltage distribution systems.
Technical Parameters
| Type | Rated voltage | Rated current | 4S Heat steady e.c. | Shock voltage | Impulse withstand voltage | Power-frequency withstand voltage | ||
| (Kv) | (A) | (A) | To earth | Across the isolating distance (KV) | To earth | Across the isolating distance (KV) | ||
| JDW3 | 0.5 | 200 | 1250 | 3150 | 4 | 5 | 2 | 3 |
| JDW3 | 0.5 | 400 | ||||||
| JDW3 | 0.5 | 600 | ||||||
| JDW3 | 0.5 | 800 | ||||||
| JDW3 | 0.5 | 1000 | ||||||
JDW3-0.5 Low-voltage Knife-fuse Switch | Low-voltage Distribution Fuse-disconnect Combination Switch
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