The international Zhaga Consortium is developing interface specifications that enable interchangeability of LED light sources made by different manufacturers. This will accelerate the adoption of LED lighting solutions in the marketplace. Interchangeable LED light sources, which are enabled by Zhaga interface specifications, offer a number of benefits for different user groups with the lighting industry. Zhaga"s role is to develop and publish interface specifications that define the interfaces -mechanical, thermal, photometric, electrical and control - between LED light engines and LED luminaires. The individual specification documents, known as Books, cover different types of LED light engines (LLEs) that are suitable for a range of applications. In this paper, introduced interchangeability on LED module level electrical interface.