IEC 60238:2020 Edison screw lampholders

IEC 60238:2020 is an international standard developed by the International Electrotechnical Commission (IEC) that specifies uniform requirements for Edison screw lampholders—widely used components for mounting and electrically connecting lamps with Edison screw bases. Officially released to replace its predecessor (IEC 60238:2014), this standard applies to common Edison screw lampholder types, including E14 (small screw), E27 (standard household screw), and E40 (large industrial screw), covering their design, material, and dimensional baseline to ensure global compatibility across different lighting products (e.g., incandescent, LED, and energy-saving lamps).

IEC 60238:2020 focuses on key performance and safety criteria, such as electrical insulation resistance, contact conductivity (typically requiring corrosion-resistant materials like brass for current-carrying parts), and mechanical durability (e.g., withstanding repeated lamp insertion/removal). It also updates test methods for verifying “creepage distances and clearances” to prevent electrical hazards, and adds definitions for specialized types like enclosed reinforced insulation lampholders. By aligning global manufacturing practices, the standard aims to enhance product safety, reduce cross-border compatibility issues, and support the consistent quality of lighting systems in residential, commercial, and industrial applications.

LISUN supplies the fully test solutions for the following IEC 60238:2020, please see the below excel table:

GDJS-015B Temperature Humidity Chamber | Thermal Chamber

SMT-02T10 IEC 61032 Standard Articulated Test Probe with 10N Thrust

CH338 Digital Torsion Meter

WB2678A Grounding Resistance Tester

JL-X IP Waterproof Test Equipments

WB2681A Insulation Resistance Tester

IK07-10 IK Level Tester | IEC62262 IK07 to IK10 Pendulum Impact Hammer

CK-1 Creepage Clearances Distance Gauge | Creepage Distance Test Cards

ZRS-3H Glow-wire Test Apparatus

ZY-3 Needle Flame Test

TTC-1 Tracking Test Chamber | Leakage Tracking Test Apparatus

YWX/Q-010 Salt Spray Test | Salt Spray Test Chamber