Indoor and outdoor vacuum circuit breakers, load break switches, disconnectors and fuses for line protection and sectionalizing.
Vacuum circuit breakers are the core of our component business. We manufacture our own vacuum interrupters, cast-resin poles, spring operating mechanisms and controllers — which is why our breakers go into our own switchgear, into panel builders' assemblies, and onto distribution poles in a dozen countries.
Pole-mounted and tank-type breakers for overhead lines, rural networks, construction sites and small substations.
| Parameter | Unit | Value |
|---|---|---|
| Rated voltage | kV | 12 |
| Power-frequency withstand voltage (1 min) | kV | 42 |
| Lightning impulse withstand voltage | kV | 75 |
| Rated current | A | 630 (1250 available) |
| Rated short-circuit breaking current | kA | 20 (25 available) |
| Rated short-time withstand current (4 s) | kA | 20 |
| Rated peak withstand / making current | kA | 50 |
| Rated operating cycles (mechanism) | times | 10 000 |
| Mechanical life of vacuum interrupter | times | 10 000 operations, 20 breaking operations at rated current |
| Operating mechanism | — | Spring-charged; manual, motor or remote |
| Control voltage | V | DC 24 / 48 / 110 / 220 or AC 220 |
| Degree of protection | — | IP54 (typical, pole-mounted enclosure) |
| Ambient temperature | °C | −40 to +40 |
| Standard | — | IEC 62271-100, GB 1984 |
| Model | Rated voltage | Rated current | Breaking current | Typical application |
|---|---|---|---|---|
| ZW7-40.5 | 40.5 kV | 1250 / 1600 / 2000 A | 25 / 31.5 kA | 35 kV overhead lines, substation incomers, sectionalizing |
| ZW8-12 | 12 kV | 630 / 1250 A | 20 / 25 kA | Outdoor pole-mounted, integrated with disconnect and CT |
| ZW32-12F | 12 kV | 630 A | 20 kA | Intelligent recloser with FTU, auto-reclosing & fault isolation |
Withdrawable handcart and fixed units for metal-clad switchgear, ring main units and motor control.
| Parameter | Unit | ZN63A (VS1)-12 | ZN85-40.5 |
|---|---|---|---|
| Rated voltage | kV | 12 | 40.5 |
| Power-frequency withstand (1 min) | kV | 42 | 95 |
| Lightning impulse withstand | kV | 75 | 185 |
| Rated current | A | 630 / 1000 / 1250 / 1600 / 2000 / 2500 / 3150 / 4000 | 1250 / 1600 / 2000 / 2500 |
| Rated short-circuit breaking current | kA | 20 / 25 / 31.5 / 40 | 20 / 25 / 31.5 |
| Rated short-time withstand (4 s) | kA | 20 / 25 / 31.5 / 40 | 20 / 25 / 31.5 |
| Rated peak withstand | kA | 50 / 63 / 80 / 100 | 50 / 63 / 80 |
| Mechanical life | operations | 10 000 (20 000 optional) | 10 000 |
| Rated short-circuit breaking operations | times | 50 | 30 |
| Installation | — | Withdrawable handcart (fixed type available) | Withdrawable handcart |
| Standard | — | IEC 62271-100, GB 1984 | IEC 62271-100, GB 1984 |
Breakers can be supplied loose for your own switchgear, or factory-fitted and tested inside ours — whichever suits your scope.
The rest of the line-hardware package — usually ordered together with the breakers.
| Model | Type | Rated voltage | Rated current | Notes |
|---|---|---|---|---|
| FN7-12 / FZN21-12 | Indoor load break switch | 12 kV | 400 / 630 A | With or without integral earthing switch and fuse |
| GW4-12 / GW4-40.5 | Double-column outdoor disconnector | 12 / 40.5 kV | 630–1250 A | Manual or motorised, with earthing blade option |
| GW5-40.5 | V-shaped outdoor disconnector | 40.5 kV | 630–1250 A | Compact, for substation busbar isolation |
| GW9-12 | Single-column outdoor disconnector | 12 kV | 200–630 A | Pole-mounted line isolation |
| JN15-12 | Indoor earthing switch | 12 kV | — | Short-circuit making capacity 50 kA peak |
| Model | Type | Voltage | Current range | Typical use |
|---|---|---|---|---|
| RW12-12 | Outdoor drop-out fuse | 12 kV | 5–200 A | Pole-mounted transformer protection |
| XRNT / XRNP | Indoor current-limiting fuse | 12–40.5 kV | 6.3–200 A | Switch–fuse combinations, voltage transformer protection |
| RN2-10 | Indoor PT protection fuse | 10 kV | 0.5–5 A | Voltage transformer protection |
| NT / RT | LV HRC fuse | up to 690 V | 2–1250 A | LV distribution and motor protection |
Tell us the model, rated voltage, current and operating mechanism (manual, motor or intelligent). Mixed orders with switchgear and components are welcome.
