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Manufacturers of enclosures use various safety measures to prevent the risk of electric shocks and to ensure fire resistance of their products. In order to determine the properties of the appliances with regard to the safety of insulation and resistance to fire, the materials from which the cabinets are made have been divided according to the flammability class and the degree of insulation.
Classes of protection of enclosures for electrical appliances
The standard DIN EN 61140 defines four classes of protection against electric shock. Electrical equipment is classified into three groups:
Flammability classes of enclosures
The flammability class of the material informs the user how flame retardant are the materials from which the cabinet for electrical device is made. According to EN 60695-11-10: 2013 [IDT] and IEC 60695-11-10: 2013 [IDT] following classes of reaction to fire exist:
The flammable properties of polymers are related to their heat release capacity (HRC). The polymers that we use in our in our products are classified to V0, group of materials with the best non-flammable properties.