The shift from Type Tested Assemblies (TTA) and Partially Type Tested Assemblies (PTTA) to Verified Assemblies under IEC 61439 marks a significant evolution in low-voltage switchgear and controlgear standards. For enclosure manufacturers, panel builders, and electrical engineers, understanding this transition is crucial for compliance, safety, and performance optimization.…
When it comes to electrical distribution systems, Panelboards and switchboards are two essential but often confused components. Both serve to distribute power, protect circuits, and support electrical safety — but they have distinct features, uses, and capabilities that every electrician…
Electrical enclosures, including LOA (Listed, Labeled, or Approved) voltage panels, are critical for protecting electrical components from environmental hazards and ensuring safe operation. However, mistakes in their selection, installation, or maintenance can lead to equipment failure, safety hazards, and costly…
What is Pollution Degree in Electrical Enclosures? Understanding pollution degree in electrical enclosures is important. Pollution degree classifies the level of conductive or non-conductive contamination (dust, humidity, chemicals) in an environment where electrical equipment operates. It is defined by IEC 60664 and impacts insulation…
