| Brand | ROCKWILL |
| Series | RWK-65 |
The smart brain for your MV automatic recloser — embedded protection, wide-range sensing, multi-shot reclosing, local control and SCADA-ready communication in a single compact controller. Built for 11–38kV distribution automation.
The controller is the protection and control unit mounted on (or connected to) an MV automatic recloser. It senses line current and voltage, decides when to trip and reclose, and reports to the control centre.
An automatic recloser controller continuously monitors the distribution line and, on a transient fault, commands the recloser to trip and automatically reclose through a programmed sequence of shots. This restores supply for most overhead faults in under a second without a crew. The controller also provides local/remote control, event logging, fault recording and SCADA/DNP3 or IEC 60870 communication, making it the core of modern distribution automation.
Overcurrent, earth-fault and directional elements tuned for MV overhead feeders.
Multi-shot reclosing with configurable dead time and fast/slow shot sequence.
DNP3 / IEC 60870-5-104 communication with remote trip, close and settings.
Transient faults clear automatically — typical SAIDI improvement for overhead feeders.
Operate and reconfigure the recloser from the control centre, no field visit.
Continuous waveform, fault and operation records for asset analytics.
Bidirectional fault detection supports distributed generation on the feeder.
RS232/485, optical, Ethernet and cellular options for any topology.
Matched to ROCKWILL reclosers or retrofitted to third-party units.
Representative values; the certified datasheet is prepared on request — contact us.
| Parameter | Typical value |
|---|---|
| Nominal system voltage | 11kV / 12.47kV / 24kV / 33kV / 38kV |
| Current sensing range | 0.5 A to 1,000 A (CT input) |
| Protection functions | Phase/ground overcurrent, directional, over/under voltage |
| Reclosing sequence | 1–4 shots, programmable fast/slow dead time |
| Communication | DNP3, IEC 60870-5-104, Modbus; RS232/485, Ethernet, cellular |
| Local control | Open/close pushbuttons, trip indicator, live LED |
| Recording | Event log, oscillography, fault reports |
| Power supply | CT-powered with battery / external 12/24/48 Vdc |
| Enclosure | IP54 weatherproof control cabinet / pole-mount |
| Standard | IEC 62271-111 / ANSI C37.60 (application) |
|
It monitors the MV line, trips the recloser on a fault, and automatically recloses through a programmed sequence. This clears most transient faults — like lightning or tree contact — without a field crew, restoring supply automatically.
The controller runs a configurable sequence of shots — typically 1 to 4 — with set dead times. After the first shots, it delays longer to let the fault burn out; if it persists after the last shot, it locks out and reports.
Yes. The controller supports DNP3 and IEC 60870-5-104 over RS232/485, Ethernet or cellular, giving the control centre remote trip, close, status and settings access.
It is matched to ROCKWILL reclosers, but can be configured for many third-party MV reclosers via standard CT/signal interfaces under OEM/ODM.
Yes. We manufacture the automatic recloser controller under OEM/ODM with your label, firmware settings and documentation.
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