UL 508 Panel Shop
Custom Control Panels / Industrial Control Panels

Electrical Systems Ltd. is a leading panel builder in Southern California.  Founded in 1973, ESL builds custom control panels and electrical equipment per client specifications and strives to exceed the highest expectations.  Additionally, ESL offers clients UL 508A, 698, 231, 1682, and 1008 listing capabilities.  Conveniently located in Corona, ESL’s 36,000 square foot turn key manufacturing facility provides industrial panels and electrical control systems for a variety of industries including:

• Contract Manufacturing
• Food Processing
• Water/Wastewater
• Petrochemical Refineries and Pipelines
• Pharmaceutical
• Power Generation/Transmission/Distribution
• Environmentally-friendly Alternative Power Solutions