Increased safety and explosion-proof are commonly used safety classification standards for equipment in the industrial field. When choosing between increased safety and explosion-proof types, it is necessary to evaluate and make decisions based on specific working environments and requirements. As a manufacturer, Zhejiang Yamin Explosion proof Technology Co., Ltd. will provide a detailed introduction to the differences between the two for your convenience in selecting:

1.If instruments and meters need to be installed inside the explosion-proof junction box, which may generate arcs and pose a high degree of danger, explosion-proof products should be used. For some high-risk areas, IIC level explosion-proof products should also be selected, such as explosion-proof surface stops or threads. The materials of explosion-proof junction boxes include stainless steel, aluminum alloy, carbon steel, etc.

For specific details, please refer to GB3836.2 standard: The explosion-proof type is to enclose all components of the equipment that may ignite explosive gas mixtures in a shell. The shell can withstand the explosive mixture that penetrates into the interior of the shell through any joint surface or structural gap without damage, and will not cause ignition of the explosive environment formed by one or more gases or vapors outside. Put all components that may generate sparks, arcs, and dangerous temperatures into a flameproof enclosure, which separates the internal space of the equipment from the surrounding environment. There are gaps in the explosion-proof shell, and due to the breathing and gas permeation of electrical equipment, there may be explosive gas mixtures inside. When an explosion occurs, the shell can withstand the generated explosion pressure without damage. At the same time, the gaps in the shell structure can cool the flame, reduce the flame propagation speed, or terminate the acceleration chain, so that the flame or dangerous flame products cannot penetrate the explosion-proof gap and ignite the external explosive environment, thereby achieving the purpose of explosion-proof.

　　2.If the explosion-proof junction box is only used for wiring and does not install other components, an increased safety explosion-proof junction box can be selected; The materials of increased safety explosion-proof junction boxes mainly include stainless steel, engineering plastics, aluminum alloys, etc.

For specific details, please refer to GB3836.3 standard: Increased safety explosion-proof type is an explosion-proof type that takes additional measures to improve the safety of electrical equipment that does not generate arcs or sparks under normal operating conditions, in order to prevent the possibility of dangerous temperatures, arcs, and sparks in its internal and external components. It does not include equipment that generates sparks or arcs under normal operating conditions.