The use of a great variety of electrical switching element controlling the movement of the machine

In machine tools, the use of a large variety of electrical switching element controlling the movement of the machine. Especially in the machine work area for electrical switch, because poor working conditions, protection of the switching elements have certain requirements. Electrical component protection at home and abroad generally IPXX graded. From a lot of the actual use of the situation: some current protection of  electri cenergy meter  can not be done with its own label corresponding to the IP level. It is important that the switch itself is not the problem but rather the waterproof test standards and the difference between the actual use. Speaking from an instance of the following, in order to explain this situation and analyzed. A safety  air circuit breaker  capability due to inadequate equipment failure my company a combination of Italian-made CNC machine tools during machining,  Electric energy meter  exchange when the door is closed, after rising rotary table should be rotated after a station stop and whereabouts but suddenly stopped rising after the rotation is not the case, the operator immediately press the emergency stop, but in vain, the operator immediately turn off the main power tools, was able to stop. Eventually found the problem because inadequate protection safety switch lock protection class IP65.