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For decades, utilities have been forced to choose between clear visible isolation and remote-operated convenience. Traditional air-break switches provide line of sight confidence but demand manual intervention, while SF₆-filled alternatives add complexity, environmental risk, and lifecycle challenges. The NOJA Power VISI SWITCH® was created to break that compromise. Now, with the addition of remote control capability, it goes even further.
The world’s first solid dielectric insulated Load Break Switch with visible internal isolation, the NOJA Power VISI SWITCH® delivers unmatched safety, reliability, and environmental performance. With zero SF₆, a 30 year maintenance free design, and now SCADA enabled remote operation, it represents a decisive step forward in modern distribution automation.
Redefining Safety with Visible Isolation
At the heart of VISI SWITCH® is one deceptively simple innovation: true visible isolation through the bushing itself. Unlike conventional switches that rely on mechanical flags or assumed positions, the NOJA Power VISI SWITCH® allows operators to see the actual isolator contacts through a dedicated viewing window embedded in each phase.
From ground level, personnel can clearly confirm whether the switch is open or closed. No guesswork, no interpretation. The isolator contact is coated in a reflective red finish for high visibility, even in low light conditions, while the viewing window remains transparent for the full life of the switch. This visible break provides absolute confidence that a circuit is safely isolated before work begins.
Internally, the NOJA Power VISI SWITCH® combines vacuum interrupters with solid dielectric insulation, ensuring load breaking occurs safely before isolation is achieved. The result is a controlled operating sequence that prioritises both operator safety and network integrity without the environmental trade offs of SF₆ gas.
A Maintenance Free, Environmentally Responsible Alternative
Utilities worldwide are under pressure to decarbonise existing assets while improving reliability. The NOJA Power VISI SWITCH® was engineered precisely for that challenge. With no gas handling, no pressure monitoring, and no consumables, the switch is designed to operate maintenance free for 30 years.
Housed in a sealed, arc fault vented stainless steel tank and rated to IP65, it withstands harsh environments while delivering consistent mechanical performance over its full service life. For utilities seeking to eliminate SF₆ from their networks without sacrificing capability, the NOJA Power VISI SWITCH® offers a compelling and proven pathway.
Bringing Remote Control to Visible Isolation
In January 2026, NOJA Power confirmed the integration of its field proven RC 10 control system into VISI SWITCH®, unlocking full remote operation capability for the first time.
Through a factory integrated Motor Accessory option, engineers can now remotely open and close the switch via industry standard SCADA protocols, including DNP3, IEC 61850, and IEC 60870 5 104. This ensures seamless integration into existing control rooms, grid automation platforms, and digital substations.
Crucially, remote control does not compromise VISI SWITCH®’s defining feature. Operators still retain visible internal isolation, meaning utilities can combine remote switching efficiency with absolute on site confirmation whenever required.
Proven RC 10 Performance, Built for the Field
The RC 10 platform is not new. It has been deployed in recloser applications for over a decade, earning a reputation for durability, cyber secure communications, and dependable operation in demanding conditions.
