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Ideal for 12kV–45.5kV power distribution, the FZW32 is widely used in:
• Power Sector: Ensures stable grid transmission.
• Metallurgy: Supports high-power industrial machinery.
• Mining: Performs reliably in harsh, explosive environments.
• Chemical Plants: Resists corrosive conditions.
It excels in frequent-operation settings like substations and distribution centers.
Core Components & Working Principle
The FZW32 load break switch features a disconnect blade, vacuum interrupter, and operation mechanism. Its vacuum arc-extinguishing chamber ensures rapid arc quenching, offering high reliability, long lifespan, and compact design. It is explosion-proof, pollution-free, and requires minimal maintenance.
Key Applications
Ideal for 12kV–45.5kV power distribution, the FZW32 is widely used in:
● Power Sector: Ensures stable grid transmission.
● Metallurgy: Supports high-power industrial machinery.
● Mining: Performs reliably in harsh, explosive environments.
● Chemical Plants: Resists corrosive conditions.
It excels in frequent-operation settings like substations and distribution centers.
Environmental Adaptability
Operates in diverse conditions:
● Altitude: Up to 2000m.
● Temperature: -30℃ to +40℃ (max daily variation: 32K).
● Wind Resistance: 700Pa (34m/s).
● Pollution: Grade IV (GB5585 standard).
● Durability: Withstands seismic intensity 8 and 10mm ice buildup.
Technical Specification:
| No. | Item | Unit | Data | ||
| 1 | Rated Voltage | KV | 12 | 24 | 40.5 |
| 2 | Rated Frequency | Hz | 50 | 50 | 50 |
| 3 | Rated Current | A | 630 | 1250 | 1250 |
| 4 | Rated Active Load Breaking Current | A | 630 | 1250 | 1250 |
| 5 | Rated Loop Breaking Current | A | 630 | 1250 | 1250 |
| 6 | 5% Rated Active Load Breaking Current | A | 31.5 | 62.5 | 62.5 |
| 7 | Rated Cable Charging Breaking Current | A | 10 | 10 | 25 |
| 8 | Rated No-load Transformer Breaking Capacity | KVA | 1600 | 1600 | 1600 |
| 9 | Rated Breaking Current of Capacitor Bank | A | 100 | 100 | 100 |
| 10 | 1-minute Power Frequency Withstand Voltage: Vacuum Break Phase-to-phase,Phase-to-ground/lsolation Break | KV | 42/48 | 52/65 | 68/95/110 |
| 11 | LightningImpulse Withstand Voltage: Phase-to-phasePhase-to-ground/lsolation Break | KV | 78/85 | 125/145 | 185/215 |
| 12 | Rated Short-time Withstand Current (Thermal Stability) | KA | 20 | 20 | 25 |
| 13 | Rated Short-circuit Duration | s | 4 | 4 | 4 |
| 14 | Rated Peak Withstand Current (Dynamic Stability) | KA | 50 | 50 | 63 |
| 15 | Rated Short-circuit Open-close Current | KA | 50 | 50 | 63 |
| 16 | Mechanical Life | Times | 10000 | 10000 | 10000 |
Dimensions：
● 24KV Dimension
● 12KV Dimension
● 40.5KV Dimension
Further information or a personal consultation? Our products and know-how are there to provide solutions.
