基于标准EN45545-2-2020，E类，电气设备，Electro technical equipment
EL1A，室内电缆，R15；*4.2c电气柜外的电缆，Cables for interior
EL1B，室外电缆，R16；*4.2c电气柜外的电缆，Cables for exterior
EL2，电缆套管，参照表7和表8（R1，R6，R7，R9，R22，R23） Cable containment（linear product)
EL3A，电弧绝缘材料，R11；参照5.3.2 in EN 45545-5:2013+A1:2015，可从样品长度方向上裁切，Arc resistant insulation materials Type A
EL3B，电弧绝缘材料，R12；同上，Arc resistant insulation materials Type B
EL3C，电弧火花防护材料，R7，同上，Arc splash barrier materials
EL4，可燃的绝缘液体，R14；Flammable insulation liquid
EL5，室外供电系统设备，R23；避雷器，隔离器； 开关，主断路器，Surge arresters，isolators; switches，main circuit breakers；Supply line system devices –Exterior
EL6A，室内供电系统和高压设备， R22；Isolators，current and voltage transformers, main circuit breakers，contactors，隔离器，电流和电压互感器，主断路器，接触器；Supply line system and high power devices – Interior
EL6B，室外供电系统和高压设备， R23；同上；Supply line system and high power devices – Exterior
EL7A，室内扼流圈和线圈，R22；Choke and coils-Interior
EL7B，室外扼流圈和线圈，R23；Choke and coils-Exterior
EL8，刹车器，R13;Brake resistors
EL9，印刷电路板（含涂层），R24或R25或R26，Printed circuit boards
EL10，低压电气和电子产品，R26Low power electro technical and electronic products例如：低功率断路器，过载继电器，接触器，接触器继电器，开关，控制或信号开关，端子，保险丝Examples include low power circuit breakers，overload relays, contactors, contactor relay, switches, control or signalling switches, terminals，fuses