Switched Interlocked Socket

A KRIPAL CEE Switched Interlocked Socket is an advanced industrial power connector that integrates an ON/OFF switch with a mechanical safety interlock.

This design ensures that the plug can only be inserted or removed when the switch is in the OFF position, and the switch can only be turned ON when the plug is fully and correctly engaged.

This prevents live connection and disconnection, offering the highest level of operational safety for personnel and equipment in demanding industrial environments.

The mechanical interlock is a foolproof physical barrier that eliminates human error.

It prevents arc flashes and electric shock by making it impossible to:

• Insert or remove the plug when the switch is ON.
• Turn the switch ON when the plug is not fully inserted.

This enforced sequence of operation ensures all connections are made on a dead circuit, protecting operators from dangerous arcs and preventing contact damage to the socket and plug.

KRIPAL offers a robust range to meet diverse industrial needs:

Current Ratings: 16A, 32A, 63A, and 125A.

Pole Configurations: 3-Pole, 4-Pole, and 5-Pole options for various single and three-phase systems.

Environmental Protection: IP44 (splash-proof) or IP67 (dust-tight and waterproof) ratings.

Key Components: Nickel-plated brass contacts for superior conductivity and durable Polycarbonate (PC) housing for impact resistance. Connections are secured via reliable screw terminals.

Our switched interlocked sockets demonstrate exceptional versatility across a wide spectrum of heavy-duty and critical sectors, including:

• Heavy Industry: Steel plants, chemical processing, aluminum smelters, and mining.
• Infrastructure: Power generation facilities, ports, airports, and subway systems.
• Manufacturing: Automotive, electronics, food processing, and tobacco factories.
• Harsh Conditions: They are engineered to operate reliably in Pollution Degree 3 environments, within a temperature range of -25°C to +40°C, at altitudes up to 2000m, and in humidity not exceeding 90% RH.

KRIPAL Switched Interlocked Sockets are fully compliant with major international and Chinese national standards, ensuring global safety and performance acceptance.

They meet:

GB/T11918.1 (IEC 60309-1), GB/T11918.2 (IEC 60309-2): For plugs, socket-outlets, and couplers.

• GB/T11918.4 (IEC 60309-4): Specifically for switched interlocked socket-outlets.

This dual compliance guarantees reliability for both domestic and international projects.

In industrial applications like manufacturing lines or chemical plants, simply unplugging equipment under load can cause catastrophic arc flashes, equipment damage, and production downtime.

The integrated switch allows for safe, load-breaking disconnection, while the interlock enforces its use. This combination is the definitive method for managing power to portable equipment and machinery, ensuring a safe shutdown and startup sequence every time.

Yes. The robust PC housing and high-quality internal components are designed for challenging environments. With an operational temperature range starting from -25°C, these sockets are suitable for use in cold storage facilities, outdoor applications in mountainous regions with snowfall, and other settings where standard electrical components might fail.