Magnecraft Electric Company于1951年由位于伊利诺伊州芝加哥的Herbert Steinback创立，开始开发工业应用继电器。今天，Magnecraft产品系列被公认为业内最具创新性和质量意识的产品。 Magnecraft通过创造功能最丰富，评级最高且最具成本效益的继电器，插座和附件来保持领先地位。

施耐德电气于2005年收购Magnecraft产品系列。

SE Relays是一系列施耐德电气，是一系列用于通用和工业应用的机电，混合，固态继电器和插座。

Founded in 1951 by Herbert Steinback in Chicago, IL, Magnecraft Electric Company began developing relays for industrial applications Today, the Magnecraft product range is recognized as the most innovative and quality-conscious name in the industry. We stay ahead by creating the most feature-rich, highest-rated and cost-effective relays, sockets and accessories available.

Schneider Electric Acquires Magnecraft Product Range in 2005.

SE Relays, a range of Schneider Electric, is a broad line of electro-mechanical, hybrid, solid state relays and sockets used in general purpose and industrial applications.