| Brand | ROCKWILL |
| Series | RCW |
| Rated maximum voltage | 15kV 27kV 38kV |
| Rated maximum current | 400/630/800/1250A |
| Rated short circuit breaking current | 12.5/16/20/25*kA |
| Rated peak value withstand current | 31.5/40/50/63*kA |
| Mechanical life | 30000 |
The RCW series outdoor medium-voltage triple-single automatic circuit recloser is an intelligent protection and control device designed for 15kV～38kV power distribution lines, complying with IEC 62271 and ANSI standards.
Adopting vacuum interrupter, permanent magnetic actuator and integrated stainless steel tank, it integrates protection, measurement, communication, fault location and online monitoring. It can quickly isolate line faults and automatically restore power supply, significantly improving the reliability of distribution networks, suitable for overhead lines, distribution substations and new energy grid-connected applications.
The controller is equipped with complete relay protection and programmable logic, supports various standard communication protocols and remote communication, accurately measures electrical parameters, flexibly configures reclosing settings, and provides large-capacity event recording. It supports customized expansion to fully meet the intelligent control requirements of distribution automation.
With vacuum interrupter and permanent magnetic actuator, the switching operation is precise and stable, with mechanical life up to 30,000 operations, long maintenance-free period, suitable for long-term unattended outdoor operation.
It supports multiple operation modes including independent phase control and three-phase linkage, featuring single-phase tripping, single-phase reclosing and single-phase lockout, which can accurately handle single-phase grounding and phase-to-phase faults, greatly reducing power outages in non-fault areas.
It integrates a full set of protection logic such as overcurrent, instantaneous overcurrent, zero-sequence, directional, over-voltage and under-voltage protection, supporting 10 ANSI/IEC protection curves to flexibly adapt to various line protection schemes.
Standard with RS485, Modbus, DNP3.0, IEC 60870-5-101/104 protocols, supporting GPRS/GSM remote communication, it can be connected to distribution automation systems for remote monitoring, fault recording and event logging.
The whole unit adopts 304 stainless steel tank with IP54 protection, resistant to high and low temperatures, corrosion and vibration. It can operate stably for a long time in extreme environments from -45℃ to +85℃, adapting to plateaus, coastal areas, cold and hot climates.
Flexible installation including single-pole, double-pole mounting and substation installation, with standard interfaces and cable configuration for easy on-site wiring and commissioning, suitable for both renovation and new projects.
| N | Item | Unit | Data |
|---|---|---|---|
| 1 | Rated maximum voltage | kV | 15、27、38 |
| 2 | Rated maximum current | A | 400/630/800/1250 |
| 3 | Rated frequency | Hz | 50/60 |
| 4 | Rated short circuit breaking current | kA | 12.5/16/20/25* |
| 5 | Rated peak value withstand current | kA | 31.5/40/50/63* |
| 6 | Rated 1min power frequency withstand voltage (Dry/Wet) | kV | 28/36 60 70 |
| 7 | Rated lightning impulse voltage | kV | 95、125、170 |
| 8 | Operation sequence | s | C‑0.5‑CO‑2‑CO‑5‑CO |
| 9 | Mechanical life | n | 30000 |
| 10 | Power supply and operating voltage | V | 110/220, Customized |
| 11 | Ratio of current transformer | A | 400/1, Customized |
| 12 | Number of voltage sensors | n | ≤6 |
| 13 | Opening time | ms | ≤40 |
| 14 | Closing time | ms | ≤50 |
| 15 | Minimum creepage distance | mm/kV | 31, Level 4 |
| 16 | Minimum distance between phases | mm | 360、380、435 |
| 17 | Potential transformer | V | 110/220, Customized |
| 18 | Cable length | m | 6, 8, 12, Customized |
| 19 | Cable clamp | — | 4‑hole NEMA |
| 20 | Lightning arrester | n | ≤6 |
| 21 | Mounting type | — | Single / double column |
Practical Application: Widely used in urban and rural distribution networks, industrial parks, new energy stations, mines and infrastructure lines at home and abroad. It realizes millisecond-level fault handling for common faults such as lightning strikes, tree barriers and single-phase grounding, with high automatic reclosing success rate, significantly reducing power outage time and manual inspection costs.
Core Technical Strengths: No oxidation and no gas leakage with vacuum interrupter; no jamming and no spring fatigue with permanent magnetic actuator; triple-single independent control better matches actual distribution network fault characteristics; all-condition design adapts to harsh environments with long-term stable performance.
| Item | Specification |
|---|---|
| Air Temperature | Maximum temperature: +85℃ Minimum temperature: -45℃ |
| Humidity | Monthly average humidity: 99% Daily average humidity: 100% |
| Installation Altitude | Maximum installation altitude: 2500m or higher |
| Ambient Environment Requirements | Ambient air shall not be significantly polluted by corrosive, flammable gases or vapors; no frequent violent vibration |
For more product details, technical drawings and selection guides, please click the button below to download the full documentation！
It is outdoor pole-mounted vacuum recloser with three independent single-phase poles, can trip and reclose per phase individually for overhead distribution network.
Mainly IEC 62271-111, ANSI/IEEE C37.60 and IEC 62271-1.
It supports independent phase trip. Single-phase fault will not cut off all three phases, reduce outage scope.
It is pole-mounted, widely applied on overhead MV distribution lines and smart grid distribution automation projects.
While the ZW32 is a basic switch requiring an external controller, the RCW Outdoor Triple Single-phase Recloser is a fully integrated smart grid solution featuring independent phase control, built-in protection, and seamless communication.
Furthermore, it strictly complies with IEC/ANSI standards and uses premium insulation tailored for international distribution automation projects.
The Rockwill standard smart recloser offers high precision with a wide measuring range (2A–16,000A). Simply ensure your normal current is within this standard range when making a selection.
Yes. In addition to the standard 2A–16,000A range, Rockwill provides custom-configured units for ultra-low current measurement and protection in the 0.1A–2A range.
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