Electrical panels function like the heart of electrical systems; the safe distribution of energy depends on the correct selection of materials that make up the panel. This article discusses the building blocks of electrical panel production and the selection criteria that should be considered for each.

1. Panel Body Materials

The housing protects the sensitive equipment inside from external factors. Galvanized sheet steel Its high mechanical strength and long service life make it the standard choice; stainless steel (AISI 304/316) in food, pharmaceutical and chemical plants, polycarbonate and glass fiber reinforced polyester It is used in outdoor applications. The primary criterion in selection is the IP protection class according to EN 60529; humidity, temperature and UV conditions of the environment, as well as mechanical impact resistance (IK class), are also decisive.

2. Busbar Systems

Busbars are the main current-carrying components within a switchboard; they are made of copper or aluminum. Straight, U-shaped, and L-shaped geometries are used for compact placement; epoxy, PVC, or tin coatings are used for corrosion resistance. Current carrying capacity, thermal expansion behavior, and short-circuit withstand capability should all be considered during selection.

3. Cabling and Connectors

Most common in panel-mounted connections NYAF (Multi-stranded, flexible) cables are preferred for fixed connections. NYA, in applications requiring high temperatures XLPE insulated Cables are used. Cross-sectional area calculations should be performed according to IEC 60228; contact resistance and correct tightening torque values should be considered when selecting lugs, terminals, and conduits.

4. Protection and Control Equipment

Circuit breakers, contactors, thermal and time relays form the brain of the panel. In addition to nominal current and voltage values... cutting capacity, Mechanical/electrical lifespan and auxiliary contact requirements determine the selection. For details on the components, see below. basic components in our article You can take a look.

5. Cooling and Ventilation

Fan and filter systems, thermostats, hygrostats, and heaters (when needed) keep the temperature inside the control panel under control. The selection is made according to the heat dissipation capacity of the panel; fan flow rate, noise level, and filter replaceability are important for operation.

6. Assembly Hardware and Labeling

35 mm DIN rails provide the standard infrastructure for modular devices; galvanized or stainless steel fasteners offer long-lasting mounting. Neat layout and complete labeling speed up maintenance and troubleshooting.

Conclusion

Material selection directly determines the lifespan, safety, and total cost of ownership of the panel. At ElektroPanel, with our IEC 61439 type-tested system infrastructure, our engineering team selects the appropriate materials and components for your project. Contact us for a quote..

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