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The ZW32-40.5 Outdoor Recloser Circuit Breaker is an intelligent medium-voltage switching device designed for modern overhead distribution networks requiring fast fault isolation, automatic power restoration, and remote operation capability. Unlike conventional outdoor circuit breakers that only provide basic protection, this vacuum recloser integrates fault detection, protection logic, and automatic reclosing functions into one compact pole-mounted solution.
Designed for 40.5kV distribution systems, the ZW32-40.5 combines vacuum interruption technology with a permanent magnetic operating mechanism to achieve rapid switching response and long mechanical service life. It is widely applied in utility distribution feeders, renewable energy grid connections, industrial power networks, and rural electrification projects where improving grid reliability and reducing outage time are critical priorities.
The equipment shares the protection philosophy of a 33KV Vacuum Circuit Breaker, while adding intelligent reclosing functions similar to an Automatic Reclosing Circuit Breaker. Compared with standard Outdoor Recloser Circuit Breaker models, the ZW32-40.5 provides higher insulation capability and stronger fault interruption performance for demanding medium-voltage applications.
The ZW32-40.5 Outdoor Recloser Circuit Breaker adopts a fully sealed vacuum interrupter structure, preventing external contamination from affecting contact performance. The vacuum chamber provides stable dielectric recovery after current interruption, ensuring reliable operation during frequent switching and fault-clearing events.
Its permanent magnetic actuator replaces traditional spring-charging mechanisms with a simplified electromagnetic drive system. The reduced number of mechanical components improves operational reliability while lowering maintenance requirements. During switching operation, energy consumption occurs only during the transition process, making the product suitable for remote locations with limited auxiliary power availability.
The ZW32-40.5 is engineered for applications where power continuity and fast fault recovery are essential. Typical installation scenarios include:
| Parameter | Specification |
|---|---|
| Rated voltage | 40.5 kV |
| Rated frequency | 50 / 60 Hz |
| Rated continuous current | 630 A / 1250 A |
| Rated short-circuit breaking current | 25 kA (rms) |
| Rated short-circuit making current | 63 kA (peak) |
| Rated short-time withstand current | 25 kA / 3 s |
| Power frequency withstand voltage | 95 kV (dry) / 80 kV (wet) |
| Lightning impulse withstand voltage | 185 kV |
| Interrupting medium | Vacuum |
| Operating mechanism | Permanent magnetic actuator |
| Automatic reclosing function | 1–4 programmable reclosing shots |
| Mechanical endurance | ≥10,000 operations |
| Control voltage | 24 V / 48 V / 110 V / 220 V DC |
| Communication protocols | IEC 61850 / DNP3 / Modbus |
| Protection degree | IP65 |
| Operating temperature | -40°C to +55°C |
The ZW32-40.5 Outdoor Recloser Circuit Breaker provides utilities with a practical solution for improving distribution network automation. Through automatic fault recognition, rapid interruption, and intelligent reclosing control, the device helps reduce unnecessary outages and improves power supply reliability.
Each unit is tested according to IEC 62271-100 and IEC 62271-111 requirements before delivery, including insulation testing, mechanical operation testing, and fault interruption verification. With a compact pole-mounted structure, low maintenance requirements, and smart communication capability, the ZW32-40.5 is an ideal choice for upgrading traditional distribution systems toward modern self-healing smart grids.
