Simplex Inc.

Appliances, Electrical, and Electronics ManufacturingIllinois, United States51-200 Employees

Simplex Inc. designs and manufactures Load Banks and Fuel Supply systems for the standby power generation industry, delivering solutions that meet exact customer requirements—from basic testing equipment for backup generators to custom-engineered fuel systems for mission-critical applications. The company serves a wide range of sectors, including manufacturing, technology, transportation, healthcare, education, public utilities, and the U.S. military, addressing the need for reliable, ready-to-deploy power infrastructure in mission-critical environments. Based in Springfield, Illinois, Simplex operates within the appliances, electrical, and electronics manufacturing space and is certified to ISO 9001:2008, reflecting a quality-management framework for its production processes. The firm emphasizes its ability to tailor products to specific specifications, underscoring a focus on precision engineering for standby power systems. A recent development noted in industry coverage indicates Simplex participated in the PaintExpo trade fair in Karlsruhe, highlighting ongoing engagement with broader coating and industrial technology networks.

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