In low-voltage distribution cabinets, which electrical components require higher quality?
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In low-voltage distribution cabinets, components such as circuit breakers, AC contactors, thermal relays, current transformers, intermediate relays, and ammeters – when selecting them, which ones need to be of high quality while which ones can be of average quality.
Air switches, contactors, and microcomputer-based integrated protectors (thermal relays) are the core components of low-voltage power distribution; it is necessary to choose high-quality components for these, while the quality of other elements such as light bulbs, buttons, and indicators can be reduced to a slightly lower standard.