Here are some key points about the 3 circuits of the 304 material double-layer door electric tracing control box:
1、 Material aspect
Advantages of 304 stainless steel
The 304 material has good corrosion resistance and can effectively protect the internal components of the control box in humid or chemical environments. For example, in some industrial plants or places near the sea where the humidity is high and there may be a small amount of corrosive gases, the 304 stainless steel shell can effectively prevent the box from rusting and corroding.
It has high strength, can withstand a certain degree of external impact, and is not easily deformed or damaged during installation and use.
2、 Double layered door design
Function and Safety
Double layered doors have increased their protection level. The outer door can provide basic shielding for the internal circuit layout and prevent accidental touch; The inner door further protects the core control components. When internal maintenance or adjustment is needed, closing the inner door can avoid unexpected short circuits and other issues during operation.
Sealing strips can also be installed between the double-layer doors to improve the insulation effect and reduce the impact of external environmental temperature on the electric tracing control system inside the control box.
3、 3 Circuit Design
Independence and flexibility
Each circuit can independently control different electric heating zones. For example, in a larger factory building, three circuits can correspond to different electrical heating pipelines or equipment in different workshops. In this way, when the electric heat tracing in a certain area malfunctions, it will not affect the normal operation of other circuits.
It is also more flexible in power allocation. It is possible to allocate the power of each circuit reasonably based on the required heat of different heat tracing objects, thereby improving energy utilization efficiency.
control mode  
Temperature sensor feedback control can be used. Install temperature sensors near the heat tracing objects in each circuit, transmit temperature signals to the control box, and when the temperature reaches the set value, the control box automatically cuts off the power supply of the circuit and stops heating; When the temperature falls below the set lower limit, restart the heating process.
Timer control function can also be set. For example, for places with specific working hours requirements, such as warehouses that do not require high temperature maintenance at night, the heating time period for each circuit can be set through a timer.
4、 Installation and maintenance precautions
Installation location
Choose a dry, well ventilated location and avoid direct sunlight. If installed outdoors, measures such as rain and wind protection need to be considered, such as installing rain shelters.
Keep away from flammable and explosive materials, and comply with relevant electrical safety distance requirements.
Maintenance points
Regularly inspect the 304 material casing for scratches or signs of corrosion, and promptly address any issues found.
Check the internal circuit connections to ensure that the wiring of each circuit is secure and free from looseness, oxidation, and other issues.
When cleaning the control box, first cut off the power and wipe it with a dry soft cloth to prevent water from entering the control box and causing a short circuit.