Mechanical Interlock A 63A/5P – 5959 (IP44 400V) is a three – phase and five – wire industrial interlock socket complying with the EN 60309 – 2 international standard. It adopts a 5 – pole structure of 3 phases + neutral line + earth wire (3P + N + E). The rated current of 63A can stably bear the continuous power load of high – power equipment, and the rated voltage of 400V perfectly matches the three – phase industrial power grid standard. It is especially suitable for heavy – duty industrial equipment requiring a neutral line, such as industrial refrigeration units, large – scale mixing stirrers, and power distribution terminals of automated production lines. It can ensure the stability of power transmission in long – term continuous operation conditions.
Its core mechanical interlock design is the key to safety protection, following the core logic of “locked when powered on and unlocked when powered off”. When the socket is powered on, the internal mechanical structure will firmly lock the inserted plug, completely avoiding live plugging and unplugging operations, and preventing equipment short circuits or personal electric shock accidents caused by electric arcs under 400V high voltage. When the plug is not fully inserted and locked, the circuit cannot be closed to supply power, fundamentally avoiding hidden dangers such as local overheating and equipment failure caused by poor contact. It also supports a locking function, which can be fixed in a power – off state during maintenance to prevent unauthorized personnel from mistakenly closing the switch, in line with the safety specifications of industrial sites.
The product shell is made of high – strength flame – retardant plastic, composed of upper and lower parts. With an IP44 protection level, it can effectively resist the intrusion of industrial dust and splashing water from any direction, suitable for most outdoor and semi – outdoor industrial scenarios without immersion. The internal conductive contacts are made of copper – zinc alloy. Although they are not subjected to special surface treatment, they can ensure good electrical conductivity and contact stability. The terminals adopt screw – tight connection, ensuring firm wiring that is not easy to loosen, and reducing the problem of increased contact resistance during long – term use. The product is suitable for a wide temperature working environment of – 25℃ to 80℃, and can adapt to temperature fluctuations in scenarios such as factory workshops, outdoor power distribution rooms, and auxiliary equipment areas of ports and terminals. It is widely used in general machinery manufacturing, food processing, logistics and warehousing and other industrial fields, providing safe and reliable power supply guarantee for various three – phase high – power equipment requiring neutral lines.
